Buick LaCrosse Tires

Buick LaCrosse uses eight tire sizes across the 2005-2019 production run: 225/60R16 for 2005-2009, 225/55R17 for 2005-2009 and 2015-2016, 235/50R18 for 2008-2019, 245/50R17 for 2010-2013, 245/40R19 for 2010-2013, 235/50R17 for 2012-2014, 245/45R19 for 2014-2016 and 2018-2019, and 245/40R20 for 2014-2019. Those sizes correspond to 16-, 17-, 18-, 19-, and 20-inch rim diameters.

The practical point is that year alone is not enough, especially from 2008 forward when multiple sizes often overlap. Check the size molded on the current tire, verify the wheel diameter on the car, and then match that information to the year listing so you are comparing like-for-like options rather than substituting across different wheel packages.

A 2012 Buick LaCrosse can use 235/50R17, 245/50R17, 235/50R18, or 245/40R19 because that model year was offered with multiple wheel and tire packages. The split is driven by rim diameter as well as differing section widths and profiles, rather than one universal tire size across every 2012 LaCrosse.

That means the correct choice depends on the specific configuration the car actually carries today. Start with the wheel diameter, then confirm the exact size on the sidewall, because two 17-inch options were also used in 2012 and they are not interchangeable simply because they share the same rim diameter.

Buick LaCrosse uses a wide range of rim diameters over its production span: 16, 17, 18, 19, and 20 inches. Early cars begin with 16- and 17-inch applications, 18-inch fitments appear by 2008, 19-inch sizes arrive for 2010, and 20-inch fitments begin in 2014.

That spread makes wheel diameter the first thing to verify before comparing tread designs or sidewall styles. A LaCrosse with 18-inch wheels needs an 18-inch tire regardless of what another trim level used in the same year, so read the sidewall and confirm the wheel itself before choosing among the listed options.

On a Buick LaCrosse, 235/50R18 means the tire has a nominal section width of 235 millimeters, a sidewall height equal to 50 percent of that width, radial construction, and an 18-inch rim diameter. It is one of the most widely used LaCrosse sizes, appearing from 2008 through 2019.

Understanding that code helps prevent common mistakes when comparing similar-looking sizes such as 235/50R17 and 235/50R18. The width and aspect ratio may be close, but the final number fixes the wheel diameter, so an 18-inch tire must stay with an 18-inch wheel and should not be treated as interchangeable with the 17-, 19-, or 20-inch applications.

A 2015 Buick LaCrosse can use 225/55R17, 235/50R18, 245/45R19, or 245/40R20, so the correct tire size depends on the wheel package installed on that specific car. The four listed sizes correspond to four different rim diameters, which is why there is no single 2015 LaCrosse answer without checking the car itself.

Use the current tire sidewall and the wheel diameter as your first references, then compare that information to the year listing. That approach is especially important on later LaCrosse models, where appearance packages and wheel upgrades can place two cars from the same model year on entirely different tire sizes.

Available Buick LaCrosse tire sidewall styles include Blackwall, Raised-Yellow-Letter, Redline, Pin-White-Stripe, Wide Whitewall, Narrow Whitewall, and RWL. The mix varies by size, with blackwall options concentrated in the later performance-oriented radial sizes and whitewall or redline styles appearing in several 16-, 17-, 18-, and 20-inch applications.

That variety lets owners lean either toward a factory-style luxury-sedan appearance or a more personalized period-custom look. If originality matters, compare the visual style already on the car to period photos or marque references; if appearance is the priority, choose the correct size first and then narrow the selection by sidewall treatment.

Buick LaCrosse tire offerings here come from Goodyear, BFGoodrich, Travelstar, Nitto, and Pro-Trac. BFGoodrich covers the broadest spread of sizes and series, while other brands appear in more selective applications such as specific performance radials or style-oriented fitments.

Brand choice usually comes after the size and wheel diameter are settled, not before. Once you know the exact size on the car, compare the available brands by sidewall appearance, tread style, and the general character you want for the LaCrosse, whether that is understated blackwall, a custom redline, or a more traditional whitewall look.

Buick LaCrosse tires are available in several series, including Eagle NASCAR, Silvertown Radial, UN106, g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, Nitto NT555 G2, and Street Pro III. All are radial constructions, but they differ in visual presentation and product family emphasis, with some focused on traditional styling cues such as whitewalls or redlines and others centered on blackwall performance-oriented fitments.

That means the right series depends on how the car is used and how you want it to look. Owners restoring a formal luxury-sedan appearance often gravitate toward whitewall or redline radials, while owners emphasizing modern road manners and a contemporary look usually stay with blackwall performance series in the correct size.

A Buick LaCrosse should be stored on clean, properly inflated tires in a cool, dry, dark space away from direct sunlight, electric motors, welders, furnaces, and ozone-producing equipment. If the car sits for long periods, keep it on a clean surface rather than bare earth and move it occasionally to reduce flat spotting.

Because LaCrosse uses lower-profile radial tires in several later sizes, storage conditions matter as much as tread depth. A car that is only driven seasonally benefits from regular pressure checks and periodic rolling, which helps preserve ride quality and keeps the tire from developing a set in one contact patch position.

Tires on a Buick LaCrosse should be inspected before regular road use and more thoroughly at least several times per season if the car is driven lightly. Look for pressure loss, sidewall cracking, uneven wear, impact damage, tread separation signs, and age-related hardening, especially on cars that spend much of their time parked.

Frequent inspection is important because a collector-minded or low-mileage LaCrosse may age its tires long before it wears them out. Catching early problems also helps you avoid chasing suspension or alignment concerns that are actually caused by old or deteriorated tires rather than by the chassis itself.

Tires on a Buick LaCrosse should be replaced when they show age cracking, vibration that cannot be traced to another cause, sidewall damage, irregular wear, bulges, or any sign of structural deterioration, even if the tread still looks usable. Low-use cars are especially prone to aging out their tires long before the tread is worn down.

That is a common issue on preserved sedans and garage-kept drivers where appearance can be misleading. If the LaCrosse still carries older tires with plenty of visible tread, treat age and condition as the deciding factors and have questionable tires evaluated before putting the car back into regular road service.

Buick LaCrosse used multiple original-type size ranges over its 2005-2019 production run rather than one single tire specification. The year listings show early cars using 16- and 17-inch sizes, mid-run cars adding 18- and 19-inch fitments, and later cars extending to 20-inch applications depending on the exact year and configuration.

For an originality-minded project, the best approach is to match the specific year and wheel package first, then choose a sidewall style that suits the car’s period presentation. A 2005 LaCrosse and a 2019 LaCrosse sit in very different visual eras, so authenticity comes from the correct combination of size, wheel diameter, and appearance.

Correct tire fitment can affect how a Buick LaCrosse presents in judging, display, and resale because wheel diameter, sidewall profile, and sidewall style all change the car’s stance. A LaCrosse wearing the wrong overall visual proportion can look noticeably out of character even if the tire physically mounts to the wheel.

That matters most when the goal is a clean, era-appropriate presentation rather than simple transportation. Matching the proper size to the proper wheel package and choosing a sidewall style that fits the trim level gives the car a more coherent appearance and helps avoid the mismatched look that collectors quickly notice.

Buick LaCrosse tire options include blackwall, whitewall, redline, raised-yellow-letter, and RWL treatments, so the most correct sidewall style depends on the year and the look you are trying to preserve. Whitewall and narrow whitewall options suit the more traditional Buick luxury presentation, while blackwall is the most neutral choice across later wheel packages.

The practical answer is to let the car’s trim, wheels, and intended appearance guide the decision after the size is settled. If the LaCrosse is being kept close to its showroom character, compare old photos or surviving original examples; if it has a custom or enthusiast look, redline or RWL may be appropriate in the correct size.

The listed Buick LaCrosse tires are modern radial products intended for road use when they are the correct size for the car, mounted on the correct rim diameter, and used in sound condition. Safety depends on matching the exact size to the wheel package and maintaining the tires properly, not simply on whether the tire name appears on the vehicle’s year range.

Before regular driving, make sure the LaCrosse is on the correct wheel diameter, inspect each tire for age and condition, and check inflation carefully. That is especially important on years with several possible sizes, because an incorrect substitute can compromise handling, clearance, and overall road manners even if it appears close at first glance.

Before driving a Buick LaCrosse, check tire pressure, sidewall condition, tread condition, and confirm that all four tires match the intended size for the car’s wheel package. Also look for uneven wear, cuts, bulges, cracking, and any sign that a tire has been damaged by long storage or curb impact.

A careful pre-drive inspection matters because LaCrosse fitments range from relatively tall 16-inch applications to low-profile 20-inch combinations, and each reacts differently to neglect. Verifying the basics before a drive helps preserve ride quality, protects the wheels, and reduces the chance of discovering an old tire problem once the car is already on the road.

A Buick LaCrosse should be driven at speeds appropriate to the tire size, condition, inflation, and overall mechanical condition of the car, rather than by appearance alone. Since the available LaCrosse offerings are all radial constructions but span very different sidewall heights and wheel diameters, the real limitation is the condition and suitability of the exact tires fitted.

For a well-maintained road car on fresh, correct-size tires, normal highway use may be reasonable, but an older low-mileage LaCrosse on aged rubber deserves a much more conservative approach. If there is any doubt about age, internal condition, or prior storage history, keep speeds down until the tires have been inspected and the car has been fully sorted.