Understanding the limitations and specifications for truck sizes in car washes is critical for fleet managers and operators. This article explores what kinds of trucks can safely use Sam’s Club car wash facilities. In the first chapter, we delve into the specific vehicle size restrictions that are generally enforced, focusing on the typical designs of Sam’s Club car wash bays. In the second chapter, we conduct a comparative analysis of different truck types and their dimensions, helping you identify whether your fleet vehicles are suitable for these car wash locations. Lastly, we offer best practices and recommendations for truck owners, ensuring you keep your investments protected while maintaining cleanliness across your fleet.
Sizing the Bay: Vehicle Dimensions and the Realities of Membership Car Wash Access
Understanding size limits in membership car washes means recognizing how bay openings, ceiling clearances, and stall length shape which vehicles can pass through safely. Most bays are designed for standard sedans and mid-size SUVs; pickups with ladders, roof racks, or raised cargo can require extra checks before entry. End-to-end feasibility often depends on the bay design at a given site and may vary by location. The best practice is to measure your vehicle, including mirror width and roof attachments, and contact the facility ahead of your visit to confirm clearance. Signage and on-site staff guidance further help prevent missteps, reduce delays, and protect both vehicles and equipment. In short, confirming dimensions beforehand is the most reliable path to a smooth wash experience.
Sizing the Lane: Navigating Truck Size and Clearance at Sam’s Car Wash
The question of what size truck can go through Sam’s Car Wash sits at the intersection of vehicle geometry, facility design, and the practical rhythms of daily fleet maintenance. On the surface, car washes are designed for movement and efficiency: vehicles glide into bays, pass under automatic cycles, and emerge with a quick rinse and dry. But the reality is that not all bays are created equal. The information that guides decisions at most Sam’s Car Wash locations is practical rather than prescriptive. In broad terms, these facilities are built to handle standard passenger cars and smaller sport-utility vehicles. They are not usually positioned to accommodate the full spectrum of heavy-duty or oversized commercial trucks. This distinction matters, not only for the safety of the wash equipment but for the safety of the vehicle occupants and the integrity of the car wash bay itself. While the official public-facing materials may not publish a precise roster of size limits, the available discussions and technical references do provide an essential frame: the wash system, and by extension the bay that houses it, imposes physical constraints that translate directly into which trucks can pass through without clinical risk to the vehicle, the machinery, or the surrounding structure.
The practical upshot is that a typical Sam’s Car Wash bay is optimized for a family of vehicles that share common width, height, and length profiles. In most cases, the width of the bay opening, the height of the overhead clearance, and the effective length of the wash pit all establish boundaries that a driver can actually observe only by measurement or signage. In the broader context of fixed-location automated wash systems that are capable of handling larger vehicles, the technical specifications reveal a ceiling of sorts: there exists a maximum envelope that a machine can physically accommodate. A fixed, automated rollover wash system designed for larger vehicles, such as buses and trucks, will commonly specify maximum vehicle dimensions in order to ensure proper alignment with the rollers, spray arches, and guide rails. When translated into a single sentence, the idea is straightforward: if your truck exceeds those dimensions, even if the vehicle could travel into the bay, it may not be able to complete the cycle safely or fully. The dimension set most often cited in supplier documentation describes a vehicle that should not exceed roughly 18,000 millimeters in length, 4,200 millimeters in height, and 2,700 millimeters in width. These figures are not casually chosen; they reflect the geometry of a fixed wash line designed to move a vehicle through without interference with doors, mirrors, or roof-mounted equipment.
For readers and fleets, the critical implication is that there is a built-in tension between vehicle size and wash capability at fixed sites. The length specification—18 meters, or about 59 feet—emerges as a practical upper bound that keeps the vehicle comfortably within the travel corridor of the wash path. In many cases, trucks that are mechanically no longer than a standard long-bed pickup with a mid-sized cab can pass through, but any approach beyond the width and height envelopes becomes risky. The width cap of 2.7 meters (roughly 8.9 feet) is a stern reminder that even spry pickups with side mirrors extended can approach, or sometimes exceed, a permissible envelope when those mirrors are in their widest position. Height, pegged at 4.2 meters (approximately 13.8 feet), is often the trickier dimension. It is not unusual for tall truck toppers, crossbars, roof racks, or elevated exhaust stacks to push a vehicle into a height category that the bay’s overhead clearance cannot tolerate. In practice, this means that a large or tall full-size pickup with a tall topper, a utility rack, or a cab-high cargo configuration will frequently be disqualified by sheer geometry, even if the length happens to fit within the 18-meter limit.
From a service perspective, Sam’s Car Wash aligns with a strategy of servicing the majority of daily-use vehicles, including sedans, compacts, and mid-sized SUVs. These vehicles share a common plateau of dimensions that fit the bay’s geometry and align well with the wash’s wand, spray, and blow-dry cycles. The absence of published, explicit truck-size allowances from the brand’s public materials is itself a form of guidance: it signals that the brand is structurally oriented toward smaller, more typical passenger vehicles and not toward the broad spectrum of commercial trucks that may belong to owner-operators, rental fleets, or daily-use work vehicles. The result is a practical rule of thumb audiences can lean on before attempting any drive-through with a vehicle that pushes the envelope. If a vehicle’s physical footprint clearly eclipses either the bay’s width or its overhead clearance, the hazard becomes not only risk to the vehicle but risk to the wash system’s sensitive components and the adjacent infrastructure.
The nuance here is that there is a tension between device capability and the actual acceptance policy at any given Sam’s Car Wash site. The boilerplate from the equipment world—the numbers that appear in vendor manuals—should be read as a ceiling rather than a guarantee. A bus or a large commercial truck, in a fixed system, may be within the machine’s envelope but outside what a particular site will permit because of bay width, stall length, or the physical architecture surrounding the wash line. In other words, the envelope of a fixed automated wash is a technical boundary, but the practical boundary at Sam’s Car Wash locations is a policy-supported boundary that staff enforce to preserve safety and service quality. This dual boundary is what makes the answer to the question “Can my truck go through Sam’s Car Wash?” a site-specific determination rather than a universal yes-or-no. It is a decision shaped by the vehicle’s precise dimensions, the bay’s actual clearances, and the local signage that communicates size limits.
To move from abstract dimensions to everyday decision-making, one must understand what these numbers look like in real life. A typical pickup with a standard cab and a mid-size bed, including mirrors, can comport itself near the bay’s opening without crossing critical thresholds, provided the mirrors are within a normal fold. In contrast, a full-size crew cab with a long bed and a roof rack can quickly push the overall width past the permissible boundary once the mirrors are accounted for. Vehicles with tall topper boxes, ladder racks, or cab-high storage configurations inevitably raise the height factor as well, sometimes pushing the vehicle into a zone where overhead hydraulics or lighting fixtures would conflict with the vehicle’s silhouette. The essential task for a driver is to translate the vehicle’s geometry into the bay’s geometry before entering the drive-through. This means measuring from curb to curb, including the widest point of the vehicle—the outside of the mirrors when they are deployed—and then adding the potential extension that roof racks or cargo attachments produce above the vehicle’s roofline. If those numbers threaten the 2.7-meter width or 4.2-meter height thresholds, the safe conclusion is that the vehicle should not proceed without alternative arrangements.
These considerations highlight a practical pattern for fleet managers and individual drivers alike. When planning a visit to Sam’s Car Wash, the first step is to know your vehicle’s maximum width, height, and length in its operating configuration. For width, measure from outside-to-outside of the mirrors with doors shut; for height, include the highest protrusion such as antennas, roof racks, or toppers. For length, consider cab-to-bed distance plus any protrusions. If the sum remains within the bay’s enveloping allowance, you still should confirm the site’s specific constraints. The next step is to contact the local location or check posted signage at the entrance or wait area. Location-specific signage often communicates clear, practical limits. Some sites may post a maximum wheelbase, a maximum cab height, or a posted clear width that staff will reference when a vehicle enters the lane. This local-advertisement approach is a reminder that while the mechanical envelope is universal in supplier documentation, the actual clearance available at a given site depends on architectural features, neighboring equipment, lighting structures, and the arrangement of the wash line inside the bay.
A realistic rule of thumb emerges from weighing both the engineering envelope and the on-site practice: if your truck feels noticeably wider than typical passenger vehicles when measured at the most protrusive points, or if your height exceeds standard tall configurations, do not assume you can navigate the car wash safely. Instead, consider alternate options. Some truck owners turn to mobile or on-site wash services that can be scheduled to suit a fleet’s maintenance calendar. These services usually deliver exterior cleaning—removing mud, road grime, dust, and insect debris—without requiring the vehicle to pass through a fixed facility. For fleets that rely on routine upkeep rather than full detailing, mobile wash can be a practical complement to stationary car washes. It is especially relevant for owner-operators and rental fleets that need consistent exterior cleanliness without the risk of lane conflicts or the downtime associated with waiting for a site to accommodate an oversized vehicle.
The broader context for these decisions includes the geometry of the wash equipment itself and the purpose of the facility within a fleet’s maintenance ecosystem. What a fixed automated wash can do—clean the exterior surfaces with consistent pressure, rinse, and dry—is well-suited to routine maintenance. It offers speed and repeatability across many vehicles, which is a value proposition for fleets that operate with predictable vehicle types. Yet, the fixed system’s envelope is not a one-size-fits-all solution for every truck. When a vehicle is tall, wide, or long enough to threaten the bay’s spatial relationship with surrounding equipment, the prudent choice is to opt for a different cleaning modality that preserves the integrity of both the vehicle and the wash line. The mobile service, as described in contemporary industry guides, excels at this juncture: its focus on exterior cleanliness—mud, grime, dust, and debris—delivers essential maintenance without pushing the physical boundaries of a fixed site. The emphasis on exterior cleanliness aligns well with the needs of owner-operators and fleets that demand regular upkeep with minimal downtime or risk.
Within this landscape of size, shape, and service modalities, several practical steps help drivers navigate the reality of Sam’s Car Wash while preserving vehicle integrity. First, perform a pre-visit measurement using your vehicle as you would when parking in a tight garage. Measure the width at the widest point, including mirrors. Measure the height from the ground to the highest point, including antennas or racks, and measure the overall length. If the measurements approach or exceed the stated limits of 2.7 meters in width or 4.2 meters in height, do not proceed—unless the local site has documented, site-specific allowances that you can verify with staff. Second, inspect the posted signage at the entry and along the lane. Some sites place clear indicators of maximum vehicle dimensions near the entrance or on the kiosk; others rely on staff to assess fit as the vehicle enters. If the signage is ambiguous or absent, a quick conversation with the attendant is prudent before committing to the wash cycle. Third, consider the vehicle’s configuration. A car with a standard roofline and a compact rear area is far more likely to pass than a truck with a topper or roof-mounted equipment. A long bed, an extended cab, and a high-profile cargo configuration can all push the vehicle into a higher risk category even if the base chassis would fit within generic envelope numbers. In fleet terms, this means that a daily-use vehicle that frequently carries tall equipment or cargo must be evaluated on a case-by-case basis, rather than assumed to be compatible with fixed-site car washes.
Beyond the immediate question of fit, there is a broader insight into how car wash facilities operate within the spectrum of vehicle types. The fixed automated wash systems that can deal with large vehicles reflect a segment of the market with significant capital investment and technical design. These systems are capable, in theory, of handling large figures in length, height, and width, but their deployment within a network of retail locations such as Sam’s Car Wash is bounded by safety, structural concerns, and the realities of site maintenance. For a fleet manager, the math is straightforward: if a truck’s dimensions collide with the bay’s capabilities, the alternative is to schedule mobile wash or to defer external cleaning to a facility whose layout accommodates larger dimensions. This is to say that the size question is not purely a measurement exercise; it is also a logistics and risk management issue. Fleet operations that include a mix of vehicle sizes, from sedans to tall service bodies, benefit from an explicit policy that codifies which vehicles can pass through fixed sites and which should be directed to alternative cleaning arrangements.
In the absence of universal, site-wide published limits, the most reliable strategy is to treat the issue as a site-specific, size-driven inquiry. For the driver, that means arming yourself with precise measurements, checking signage, and speaking with staff before proceeding. For the fleet manager, it means building a simple decision rule into the maintenance workflow: if a vehicle’s width or height is near the bay’s known thresholds, route the vehicle to a site with appropriate clearance or switch to a mobile-wash service for exterior cleaning. It also means recognizing that the value of a fixed-location wash—the predictability, the speed, the consistency across multiple vehicles—should be weighed against the risk of a failed entry or a damaged vehicle. The decision to wash or not to wash is not merely a convenience; it is a risk management choice about the fleet’s routine maintenance cadence.
As readers consider the practical implications, a reminder emerges: the numbers that govern fixed wash capabilities are a starting point for decision-making, not an automatic pass for any vehicle that resembles a large truck. The actual site realities, the condition of the bay, and the local policies will shape whether a given oversized truck can pass through without incident. The conversation extends beyond the numbers, into the realm of local practices and judgment calls made by attendants who know the site’s geometry intimately. This is not to cast doubt on the value of the published specifications but to acknowledge that the operational world requires adaptation. In this sense, the process is less about chasing an absolute guarantee and more about balancing the vehicle’s needs with the facility’s capabilities—an equilibrium that, when managed well, yields efficient cleaning without compromising safety.
To bring a sense of continuity to vehicle owners who must make these judgments regularly, consider the broader ecosystem of truck cleanliness. A fixed-site car wash excels at delivering speed and uniformity for a steady stream of mid-sized vehicles. When a truck that barely fits or slightly overreaches the envelope appears, the prudent path is to shift to a service modality designed for larger or taller vehicles. A mobile exterior wash service, focused on surface contaminants such as mud and road grime, offers a practical alternative that maintains cleanliness without risking the structural or mechanical components of a fixed site. This approach is particularly relevant for owner-operators and fleets where the efficiency of regular cleaning matters, but the size of the vehicle ensures that fixed-location options should be used judiciously, not reflexively.
In sum, the size question at Sam’s Car Wash is best understood as a site-specific assessment anchored in the vehicle’s measurements and the bay’s actual clearance. While fixed wash equipment intended for buses and trucks exists in the broader industry, the typical Sam’s Car Wash bays serve the majority of standard passenger vehicles with safe margins that reflect both equipment design and site architecture. The 18-meter length, 4.2-meter height, and 2.7-meter width figures cited in supplier documentation serve as a technical ceiling for fixed systems. The real-world application, however, depends on the site’s signage, the attendants’ guidance, and the vehicle’s exact configuration. For fleets with mixed vehicle types, a clear policy that differentiates which vehicles can pass through fixed bays and which should rely on mobile cleaning options can reduce downtime and protect the investment in both the wash infrastructure and the vehicles themselves. In the end, the question is less about an isolated measurement and more about how a fleet plans, measures, and proceeds in a way that respects the geometry of the lane while preserving the cleanliness and efficiency that a car wash workflow promises. For readers seeking broader facility insights that relate to the management and optimization of truck wash operations, see Facility management for truck wash businesses. This resource provides a broader lens on how wash facilities balance equipment capabilities, site constraints, and fleet needs, a balance that underpins decisions about where and how to clean a truck when the fixed-site option is not the best fit.
External reference: For a broader overview of fixed-location wash dimensions and capabilities, see the external resource at https://www.alibaba.com/product-detail/Bus-Type-Fully-Automatic-Car-Washer-Truck_1600596768728.html
What Size Truck Fits Through Sam’s Car Wash? A Practical, No-Nonsense Guide for Size-Conscious Vehicle Owners
When you drive a truck through a Sam’s Club car wash, you are testing a boundary that sits at the intersection of convenience, space, and safety. The question of what size truck can go through Sam’s car wash is not answered with a single line on a posted policy. Instead, it sits in the gray area that separates standard passenger vehicles from larger, more demanding loads. From the available information, Sam’s Club car wash bays are designed primarily for cars and small to mid-sized SUVs. The signage at many locations is focused on the typical family sedan, the compact SUV, and the crossover utility vehicle. Yet many owners of mid-sized pickups and certain crew cab configurations wonder if their trucks can be accommodated without risk to the vehicle, the facility, or other customers. The honest path to clarity begins with an understanding of the constraints that govern any automatic wash bay, and then translates that understanding into practical steps you can take before you roll up to the entrance.
The most important reality to acknowledge is that the publicly published materials do not disclose a universal, location-by-location size limit for Sam’s car wash bays. In other words, there is not a one-size-fits-all number you can memorize. The equipment you read about in generic industry sources—the kind of systems that exist in larger, purpose-built wash facilities—tends to be far more expansive than the bays you will encounter in a typical Sam’s Club store. Those larger, industrial-grade systems are designed for buses and commercial trucks, with specifications that reflect their intent and the space they occupy. But those dimensions are for a different class of facility altogether. They are not what most Sam’s Car Wash bays were built to accommodate on a day-to-day basis. The public-facing reality, therefore, is simple: if your vehicle is a standard passenger car or a small to mid-sized SUV, you’re typically within the range of what the lanes are designed to handle. If your vehicle is a large, high-profile truck, especially one with a long cab, extended bed, or tall cargo area, you should proceed with caution and verify first.
To understand why this distinction matters, it helps to look at the kinds of space a wash system requires. In a typical car wash bay designed for cars, the clearance height must clear the top of the vehicle including any roof racks, antennas, or tall mirrors. The bay width must accommodate the vehicle’s width with enough room for side-mounted components and the protective wash equipment that sweeps along the vehicle’s flanks. The length of the bay, in turn, must align with the turning radius and path of the wash system so that the vehicle can remain in the correct spot as the rollers, nozzles, or spray arms move through their cycles. All of these elements—height, width, and length—collectively determine whether a given truck, with its unique cab configuration and any extra attachments, can pass through safely and effectively.
What this means in practical terms is that some trucks will fit with no modifications or special handling, while others will not fit at all or will do so only with significant risk of contact between the vehicle and the equipment. The most conservative approach is to assume that a full-size crew cab long-bed, lifted, with tall tires or prominent aftermarket accessories, will push past the limits of a standard car wash bay. In contrast, a mid-size pickup with a modest cab-and-bed configuration, especially one that sits lower or has a more compact footprint, is more likely to fit if the location’s signage and staff confirm the clearance. Since locations vary, the best course of action is to verify dimensions locally rather than relying on a general rule-of-thumb gleaned from broader industry chatter. A quick call or a visit to the location’s posted guidance can save you time and prevent a frustrating misfit at the entrance.
The absence of a universal, publicly stated size limit should not be interpreted as an invitation to guess. It should be taken as a cue to engage in a short, practical verification process. Start by measuring a few critical dimensions of your truck—overall width including mirrors, overall height from ground to top of the cab or any equipment on the roof, and the overall length from bumper to bumper. If your vehicle has fold-in mirrors, retractable antennae, or any external attachments that can be tucked away for the wash, consider whether you can safely remove or retract them before entering. If the truck has oversized mirrors or a roof rack, factor in their additional width or height. Then, when you approach the facility, look for any posted constraints on vehicle size, height clearance, or required loading configurations. If signage is not readily visible, ask a staff member to confirm whether your particular truck configuration is compatible with the wash bay. This simple due diligence can prevent a difficult, possibly hazardous, encounter with high-pressure spray arms, turning rollers, or a canopy that is not tall enough to accommodate your load.
The decision-making process is further informed by the capacity of the wash system and the expected cycle time. In facilities that are designed to handle larger vehicles more flexibly, you may encounter a broader set of options that can adapt to different vehicle types. Some locations use wash configurations described in industry terms as rack-based or high-clearance layouts. These configurations are designed to accommodate a wider range of wheelbases and top profiles, offering greater tolerance for trucks with higher ceilings and longer lengths. In contrast, standard car wash bays tend to be optimized for a narrower target profile aligned with passenger cars. The implication for truck owners is straightforward: if your truck falls into the broader class of vehicles that typically exceeds the standard height or width, you should anticipate the possibility of a restricted pass or the need for an alternate facility. It is not a guarantee that your vehicle will be admitted, but it is a realistic expectation based on how these facilities are engineered and how the space is allocated.
Even when a truck is technically capable of fitting within a bay, there are other friction points to consider. Large trucks can introduce challenges related to side clearance, protrusions, or the way the wash equipment travels along the vehicle’s length. Some bays rely on sterile, compact trajectories that assume mirror lines and door seams will clear with a tiny margin of error. In such cases, the risk of incidental contact increases if your truck’s dimensions are only marginally within the space. Therefore, the prudent path is to err on the side of caution. If you are uncertain, opt for a different washing option—one that is explicitly designed for larger vehicles or a facility that offers truck-specific wash services. While that may mean traveling to a dedicated truck wash facility or a location with a more generous footprint, it will typically yield a cleaner result with less risk to your vehicle and to the wash infrastructure.
In practice, what truck owners should do is approach the experience as a two-step test. First, confirm the facility’s posted guidance or call ahead to verify whether your truck’s dimensions will fit within the bay’s limits. Second, if you receive a green light, prepare the vehicle to minimize any last-minute surprises. This preparation includes retracting or stowing exterior components that add width or height, ensuring the mirrors can retract or fold as needed, and removing any rooftop cargo that could pose a clearance risk. If your truck is likely to be at the upper end of the facility’s tolerance, arrive earlier in the day when the staff can offer guidance, ensure the wash program is set to the appropriate cycle, and monitor the process closely as you enter the bay. The aim is to avoid a situation where you are caught in a space that is too tight for comfort, with equipment moving in a way that leaves little room for adjustment.
The broader context for truck owners, then, is not merely about a single number but about a set of situational checks that accompany the decision to wash. It is a reminder that car wash facilities are designed with a core customer base in mind, and those customers are predominantly car owners. Yet every location has a spectrum of vehicle sizes it has successfully served, and your truck may fall within that spectrum at some sites while exceeding it at others. If you encounter a location that cannot confirm a safe fit or suggests you bring the vehicle in for a different service, take that advice seriously. There are legitimate reasons for the limitation: to protect the vehicle, to prevent damage to the wash equipment, and to ensure the safety of other customers. In the end, the goal is to achieve a thorough, efficient clean without forcing the car wash system to operate beyond its intended design.
As you consider the broader implications, you may find it helpful to connect with resources that discuss truck wash facilities and the constraints that come with servicing large vehicles. A practical reference for facility considerations in truck wash operations can be found in materials that address how spaces are managed, how workflows are designed, and how staff are trained to handle a range of vehicle sizes. For a deeper dive into facility management for truck wash businesses, you can consult industry resources that cover layout optimization, equipment compatibility, and maintenance protocols. This kind of information helps explain why some bays are more forgiving of larger vehicles than others and why a given vehicle might glide through one location but not another. Engaging with those resources does not guarantee universal access to every location, but it does equip you with a framework for evaluating your options and planning your route with fewer surprises.
For truck owners who regularly operate heavy or tall vehicles, the most reliable approach is to seek out locations that advertise or demonstrate a capacity for larger vehicles. Some facilities explicitly offer wash programs designed for high-clearance or long-wheelbase vehicles, and they may even provide pre-visit guidance or a quick measurement service. If your fleet frequently requires vehicle washing, establishing a relationship with a few reliable sites that can accommodate your typical vehicle profiles can save you time and reduce downtime. When planning routes, factor in potential detours to these more accommodating locations, especially after trips that add substantial mud, sand, or debris to your truck’s exterior. The goal is not to create a rigid workflow but to build flexibility into your wash strategy so that you can maintain the vehicle’s cleanliness without compromising safety or facility integrity.
Ultimately, the central takeaway for readers is straightforward. Sam’s car wash bays are primarily aimed at cars and smaller sport utility vehicles. If your truck is within the common size envelope for such bays, you will likely find a smooth path through the wash—provided you confirm the site-specific dimensions and prepare accordingly. If your truck exceeds those dimensions, you should not assume universal compatibility. Instead, verify locally, consider alternative wash options designed for larger vehicles, and plan your visit with extra attention to signage, staff guidance, and potential longer cycle times. This approach respects the design intent of the facility, protects your vehicle, and preserves the quality of the wash experience for all customers. For readers who want to explore more about how facilities are designed to manage a mix of vehicle sizes and how operators balance efficiency with safety, there is valuable contextual material available in industry resources that discuss facility management for truck wash businesses. You can explore that topic here: facility management for truck wash businesses. As you widen your understanding, you will also encounter broader discussions about the role of high-pressure, high-durability cleaning systems in maintaining efficient fleets and clean infrastructure elsewhere in the industry, including external perspectives on system capabilities and standards. For those who want to cross-check technical specifications from respected industry providers, an external resource you can consult is Wash World, which offers detailed specifications and guidance for fleet and truck-wash operations: https://www.washworld.com/.
Final thoughts
Selecting the right truck for your fleet is essential, not just for operational efficiency but also for maintaining them. Understanding the specific size limitations at Sam’s Club car wash will help prevent potential damages and optimize your cleaning strategies. Whether considering lighter vehicles or needing alternative washing solutions for larger trucks, being informed about these factors will serve your fleet’s longevity and performance.