The 2010 Buick LaCrosse marked a major shift for Buick, moving the sedan toward a more modern, premium touring character with cleaner styling and a more substantial road presence than earlier generations. Tire fitment follows that upscale, trim-dependent approach, with radial sizes ranging from 17-inch to 19-inch applications depending on the exact LaCrosse model. That means the real starting point is identifying whether the car is a CX, CXL, CXS, or CXS w/Touring Pkg. Available choices also vary by brand, tire series, and sidewall treatment, including blackwall, redline, and raised white letter options in some sizes. For replacement, appearance, and road manners, matching the exact trim and wheel setup matters first.
Which Tire Size Is Right for The 2010 Buick LaCrosse
The 2010 Buick LaCrosse uses three primary tire sizes, and they are tied directly to sub-model and wheel diameter. A 17-inch, 18-inch, or 19-inch rim may be correct depending on whether the car is a CX, CXL, CXS, or CXS w/Touring Pkg. Before choosing a tire, confirm the exact trim level and verify the actual wheel diameter on the car, especially if wheels have been changed over time.
245/50R17 is a metric radial size in which 245 indicates the tire's nominal section width in millimeters, 50 is the aspect ratio, R identifies radial construction, and 17 is the rim diameter in inches. On the 2010 Buick LaCrosse, this size serves the CX and suits the car's modern touring-oriented setup. Its profile and diameter place it firmly in contemporary passenger-car sizing rather than vintage alphanumeric formats. Choosing this size starts with confirming that the car still wears its 17-inch wheels and has not been upgraded to a larger factory or aftermarket wheel package.
235/50R18 is a metric radial size with a 235-millimeter nominal section width, a 50-series profile, and fitment on an 18-inch rim. This is the primary size for the 2010 Buick LaCrosse CXL and CXS, making it one of the most important trim-specific fitments in the lineup. Available choices in this size include BFGoodrich, Nitto, and Pro-Trac products, with blackwall, redline, and raised white letter sidewall treatments across several tire series. It is the size to evaluate when the goal is balancing correct trim fitment with the appearance and character you want from the car.
245/40R19 is a metric radial size that uses a 245-millimeter nominal section width, a lower 40-series profile, and a 19-inch rim diameter. On the 2010 Buick LaCrosse, this size belongs to the CXS w/Touring Pkg., so it should not be assumed for other trims without checking the car's actual configuration. Product choice in this size centers on BFGoodrich blackwall performance-oriented series rather than multiple sidewall appearances. It is the right place to focus if the car has the factory-style 19-inch wheel setup and the sharper-profile touring package presentation.
Tire fitment for the 2010 Buick LaCrosse changes by sub-model, so trim identification is an essential first step. CX, CXL, CXS, and CXS w/Touring Pkg. do not all share the same size, and wheel diameter changes with them.
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2010 Buick LaCrosse CX
The 2010 Buick LaCrosse CX uses the 245/50R17 radial size on a 17-inch wheel. Tire selection here is mainly about confirming that original wheel diameter remains in place before choosing a modern replacement with the right overall look and road-use character.
The 2010 Buick LaCrosse CXL uses the 235/50R18 radial size. That opens up a broader mix of product and sidewall choices, so the decision becomes less about size and more about selecting the tire series and appearance that best suits the car.
The 2010 Buick LaCrosse CXS also uses the 235/50R18 radial size. Because this sub-model shares its fitment with the CXL, wheel confirmation still matters, but comparison among available brands, tire series, and sidewall treatments becomes the more meaningful next step.
The 2010 Buick LaCrosse CXS w/Touring Pkg. uses the 245/40R19 radial size. Its lower-profile 19-inch setup makes wheel verification especially important, and product selection centers on choosing among the available blackwall radial performance-style options in that exact fitment.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2010 Buick LaCrosse Tires for Sale
Available 2010 Buick LaCrosse tire choices are concentrated in 235/50R18 and 245/40R19, with BFGoodrich, Nitto, and Pro-Trac options depending on size. Buyers can compare blackwall, redline, and raised white letter styling, along with different radial tire series and rim-width specifications.
Owners shopping tires for a 2010 Buick LaCrosse usually need to sort out trim-specific size, wheel diameter, sidewall style, and available product differences first. The questions below focus on fitment, tire selection, appearance, and practical road-use checks.
Tire Size & Fitment
What tire size fits a 2010 Buick LaCrosse?
The 2010 Buick LaCrosse uses three primary tire sizes: 245/50R17, 235/50R18, and 245/40R19. The correct size depends on the exact sub-model, with the CX using 245/50R17, the CXL and CXS using 235/50R18, and the CXS w/Touring Pkg. using 245/40R19.
That means the first step is confirming the trim level and the actual wheel diameter on the car before selecting a tire. A LaCrosse that has had wheel changes, appearance upgrades, or replacement rims over time may no longer match the original trim-based setup, so both the badge and the wheel should be checked.
What size rim does a 2010 Buick LaCrosse use?
A 2010 Buick LaCrosse may use a 17-inch, 18-inch, or 19-inch rim depending on sub-model. The CX uses a 17-inch rim with 245/50R17 tires, the CXL and CXS use an 18-inch rim with 235/50R18 tires, and the CXS w/Touring Pkg. uses a 19-inch rim with 245/40R19 tires.
Rim diameter is the most important wheel measurement to confirm before ordering replacement tires. Even when two sizes look similar on paper, a tire for an 18-inch rim cannot be mounted on a 17-inch or 19-inch wheel, so checking the wheel itself avoids the most common fitment mistake.
Do all 2010 Buick LaCrosse sub-models use the same tire size?
No, the 2010 Buick LaCrosse does not use one shared tire size across all sub-models. The CX uses 245/50R17, the CXL and CXS use 235/50R18, and the CXS w/Touring Pkg. moves to 245/40R19, so fitment changes with both trim and wheel diameter.
That variation matters because a buyer cannot choose by model name alone. The trim level determines the primary size, and the wheel on the car should still be verified in case a previous owner changed the factory-style setup, especially on CXS models where both 18-inch and 19-inch applications appear.
Choosing the Right Tire
What should I consider when choosing a 2010 Buick LaCrosse tire?
Start with the correct trim-specific size, since the 2010 Buick LaCrosse uses 245/50R17, 235/50R18, or 245/40R19 depending on sub-model. After size is confirmed, compare the available tire's construction, series, sidewall style, rim-width specification, and any published load figures that apply to that exact product.
The right choice depends on how the car is used and how you want it to present visually. A daily-driven sedan may call for a different balance than a fair-weather car, while sidewall appearance, wheel width, and the actual wheel package on the vehicle can all influence which option makes the most sense.
What sidewall styles are available for 2010 Buick LaCrosse tires?
Sidewall choice varies by size on the 2010 Buick LaCrosse. In 235/50R18, available styles include blackwall, redline, and RWL, while the 245/40R19 options are blackwall. Those differences can noticeably change the car's visual character even when the tire size remains correct.
Appearance should be considered alongside proper fitment rather than ahead of it. A redline or raised white letter treatment may suit a more custom or enthusiast-oriented look, while blackwall keeps a more understated presentation, but the tire still needs to match the car's wheel diameter and intended use.
What brands offer tires for the 2010 Buick LaCrosse?
Available tire brands for the 2010 Buick LaCrosse include BFGoodrich, Nitto, and Pro-Trac, depending on size. The 235/50R18 fitment has the broadest visible brand mix, while the 245/40R19 fitment centers on BFGoodrich options across several g-Force series.
Brand comparison is most useful after the correct size is locked in. Once that is settled, look at the tire series, sidewall treatment, rim-width compatibility, and any stated load specification that matters for your setup, rather than choosing by brand name alone.
Restoration & Appearance
Which tire should I choose for a period-style 2010 Buick LaCrosse?
A period-style 2010 Buick LaCrosse starts with keeping the correct trim-specific tire size and wheel diameter in place. From there, the most appearance-driven choices are found in 235/50R18, where blackwall, redline, and raised white letter options create distinctly different visual impressions without changing the basic fitment category.
That approach works best when the car is meant to reflect its original-era presence rather than a heavily updated look. Exact originality claims should be checked against window-sticker records, sales literature, or marque-specific references, but staying with the proper size is the foundation for any restoration-oriented tire decision.
How does tire construction affect the appearance of a restored 2010 Buick LaCrosse?
On a 2010 Buick LaCrosse, tire construction does not present a bias-ply versus radial appearance decision because the primary fitments are radial. The bigger visual differences come from profile, wheel diameter, and sidewall treatment, particularly in the 18-inch size where blackwall, redline, and RWL options are available.
For a restoration-minded owner, that means the look of the tire is shaped more by keeping the correct size and choosing an appropriate sidewall than by changing construction type. A 17-inch, 18-inch, or 19-inch setup gives the car a different stance, so matching the trim-level wheel package remains the key visual decision.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2010 Buick LaCrosse?
Yes, modifications can change tire fitment on a 2010 Buick LaCrosse even when the replacement tire is correct for the original trim. Aftermarket wheels, suspension changes, altered ride height, and body or brake upgrades can all affect the space available around a 245/50R17, 235/50R18, or 245/40R19 tire.
That is why the actual wheel diameter and width on the car should be checked before selecting a replacement. Clearance at full steering lock and through suspension travel also matters, especially on lower-profile applications where small setup changes can have a larger effect on usable fitment.
What should I inspect before driving a 2010 Buick LaCrosse on new tires?
Before driving a 2010 Buick LaCrosse on new tires, inspect wheel condition, valve stems, inflation pressure, tread seating, and overall tire condition after mounting. The car should also be checked for obvious suspension or steering wear that could affect how the tires track and wear once they are on the road.
A careful look around the wheel openings is also worthwhile to confirm there is no rubbing at normal ride height or during steering movement. After the first miles, recheck pressure and watch for vibration, pulling, or uneven contact, since those early signs can point to alignment or installation issues.
How often should tires on a 2010 Buick LaCrosse be inspected?
Tires on a 2010 Buick LaCrosse should be inspected regularly, not just when tread looks low. Pressure, tread wear, cracking, bulges, punctures, and uneven shoulder wear are all worth checking, especially on a car that may sit for periods and then return to normal road use.
Monthly visual checks are a sensible routine, with extra attention before longer drives and at seasonal changes. Cars stored for extended periods can develop age-related issues even when mileage is limited, so condition matters as much as mileage when deciding whether a tire is still ready for dependable service.
