The 2014 Buick LaCrosse sits in the modern full-size Buick lineup as a comfort-focused sedan with upscale styling and trim-dependent wheel packages that noticeably affect tire fitment. That matters here because this exact model uses four different primary radial sizes, ranging from 235/50R17 up to 245/40R20, depending on the sub-model. Some versions stay with a more comfort-oriented 17- or 18-inch setup, while others move to 19- or 20-inch wheels that change both profile and appearance. Available choices also vary by brand, tire series, and sidewall treatment, including blackwall, redline, and raised white letter options. The key is confirming the exact LaCrosse trim and wheel diameter before selecting a tire.
Which Tire Size Is Right for The 2014 Buick LaCrosse
The 2014 Buick LaCrosse uses four primary tire sizes, and the right one depends on the exact sub-model and wheel diameter. All of these are metric radial sizes, but they span 17-, 18-, 19-, and 20-inch rims, so identifying the actual wheel on the car is the first step. Once that is confirmed, the decision becomes choosing among the available brands, tire series, and sidewall treatments in the correct size.
A 235/50R17 tire uses a 235-millimeter section width, a 50-series aspect ratio, radial construction, and a 17-inch rim diameter. On the 2014 Buick LaCrosse, this size supports trims that use the smaller factory wheel package and keeps the fitment squarely in modern radial territory. Available product choice in this size is centered on a blackwall BFGoodrich g-Force Comp 2 AS. This size is the right place to start when the car is equipped with 17-inch wheels and the goal is to stay with the intended wheel diameter and profile.
Fit(s): 2.4L, 3.6L, Leather 2.4L, and Leather 3.6L
Construction: Radial|Rim: 18 in
A 235/50R18 tire keeps the same 235-millimeter width and 50-series profile as the 17-inch version, but it is built for an 18-inch rim. For the 2014 Buick LaCrosse, this is one of the most widely used sizes across multiple sub-models, making wheel confirmation especially important before purchase. Choices in this size include BFGoodrich, Nitto, and Pro-Trac, with blackwall, redline, and raised white letter sidewall treatments depending on the series. This size suits LaCrosse trims running 18-inch wheels and gives the broadest mix of appearance and performance-oriented product options.
Fit(s): Leather 3.6L, Leather 3.6L (AWD), and Premium
Construction: Radial|Rim: 19 in
A 245/45R19 tire is slightly wider than the 235 sizes and pairs that 245-millimeter section width with a 45-series profile on a 19-inch rim. On the 2014 Buick LaCrosse, this size appears on certain 3.6L and Premium-related configurations that use the larger wheel package. Product selection here includes BFGoodrich and Nitto offerings in blackwall designs across g-Force and NT555 G2 series. This size is worth evaluating carefully when the car has 19-inch wheels, since moving between 18- and 19-inch fitments changes both rim diameter and overall tire profile.
A 245/40R20 tire combines a 245-millimeter section width with a lower 40-series profile and fits a 20-inch rim. For the 2014 Buick LaCrosse, this is the largest primary fitment and is tied to configurations using the 20-inch wheel setup. Available choices include BFGoodrich, Nitto, and Pro-Trac options, with blackwall, redline, and raised white letter sidewall styles available depending on the tire series. This size is the correct path only when the car already wears the 20-inch wheel package, since the wheel diameter and shorter sidewall make fitment confirmation essential.
Tire fitment on the 2014 Buick LaCrosse varies by sub-model, and several trims can use more than one size depending on wheel package. Checking the exact trim and the rim diameter on the car is the most important step before narrowing down tire choices.
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2014 Buick LaCrosse 2.4L
The 2014 Buick LaCrosse 2.4L uses either a 17-inch or 18-inch radial tire setup, so wheel confirmation comes first. Once the rim diameter is verified, the decision shifts to choosing the right tire series and sidewall treatment within that size.
The 2014 Buick LaCrosse 3.6L uses an 18-inch radial tire size, which makes fitment more straightforward than the multi-size trims. Tire selection then centers on brand, series, and whether a blackwall, redline, or raised white letter presentation is preferred where available.
The 2014 Buick LaCrosse Leather 2.4L can be equipped with either a 17-inch or 18-inch radial tire package. Matching the tire to the actual wheel on the vehicle is more important than trim name alone, especially when comparing replacement options.
The 2014 Buick LaCrosse Leather 3.6L spans two different radial sizes tied to different wheel diameters. That makes it important to confirm whether the car is on the 18-inch or 19-inch setup before comparing brands and tire lines.
The 2014 Buick LaCrosse Leather 3.6L (AWD) uses a 19-inch radial tire fitment. With the size narrowed down, the main selection factors become tire series, rim-width compatibility, and staying with the wheel diameter already on the car.
The 2014 Buick LaCrosse Premium can use either a 19-inch or 20-inch radial tire setup, depending on the wheel package. Verifying the actual rim diameter is essential here, because the two sizes differ in profile as well as wheel 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 2014 Buick LaCrosse Tires for Sale
Available 2014 Buick LaCrosse tires span BFGoodrich, Nitto, and Pro-Trac options across the model's 17-, 18-, 19-, and 20-inch radial sizes. Depending on size, buyers can compare blackwall, redline, and raised white letter sidewalls, along with series such as g-Force Comp 2 AS, NT555 G2, g-Force Phenom T/A, and Street Pro III.
These FAQs focus on 2014 Buick LaCrosse tire size differences by trim, wheel diameter, available radial options, appearance choices, and the fitment checks that matter before replacing tires on a modern Buick sedan.
Tire Size & Fitment
What tire size fits a 2014 Buick LaCrosse?
The 2014 Buick LaCrosse uses four primary tire sizes: 235/50R17, 235/50R18, 245/45R19, and 245/40R20. All of them are radial metric sizes, and the correct one depends on the exact sub-model and wheel package rather than the model name alone.
The safest way to narrow it down is to confirm the trim and the actual rim diameter on the car before choosing a replacement. Several LaCrosse sub-models can use more than one size, so checking the sidewall on the current tire and verifying the wheel itself helps avoid ordering the right width and profile for the wrong rim.
What size rim does a 2014 Buick LaCrosse use?
A 2014 Buick LaCrosse can use 17-inch, 18-inch, 19-inch, or 20-inch rims, depending on the sub-model and wheel package. Those rim diameters correspond to the four primary tire sizes used on this model, so wheel diameter is a central part of correct tire selection.
The easiest check is the last number in the tire size already on the car, since 17, 18, 19, or 20 identifies the rim diameter in inches. Matching that number matters because a 19-inch tire cannot mount on an 18-inch wheel, and moving between wheel diameters also changes the tire profile and overall fitment setup.
Why does the 2014 Buick LaCrosse have more than one tire size?
The 2014 Buick LaCrosse has more than one tire size because different trims and wheel packages use different rim diameters and tire profiles. Some versions use 17- or 18-inch setups, while others move to 19- or 20-inch wheels with lower-profile tires.
That means the right tire is tied to the exact configuration of the car, not just the year and model. A buyer should confirm the sub-model, check the wheel diameter, and inspect the current tire size before selecting a replacement, especially on trims such as Leather and Premium that can appear with more than one fitment.
Choosing the Right Tire
What should I consider when choosing a 2014 Buick LaCrosse tire?
Start with the correct size for the exact LaCrosse trim and wheel diameter, since this model uses four different primary radial fitments. After size is settled, compare construction details such as rim-width compatibility, weight, and any stated load capacity within the available products.
Appearance and intended use also matter. Some sizes are offered only as blackwalls, while others include redline or raised white letter choices, and the available tire series differ by size. Matching the tire to the wheel already on the car is the first priority, then narrowing by sidewall style and product characteristics makes the comparison much more useful.
What sidewall styles are available for 2014 Buick LaCrosse tires?
Sidewall style depends on the tire size. Blackwall options are available across the 17-, 18-, 19-, and 20-inch LaCrosse fitments, while redline and raised white letter choices appear in selected 18-inch and 20-inch applications through the Pro-Trac Street Pro III line.
That gives the 2014 Buick LaCrosse owner a choice between a more understated modern look and a more styled presentation in the sizes that support it. Sidewall treatment should always be a secondary decision after confirming the correct tire size, because the wrong wheel diameter cannot be solved by choosing a preferred appearance.
What brands offer tires for the 2014 Buick LaCrosse?
Available tires for the 2014 Buick LaCrosse come from BFGoodrich, Nitto, and Pro-Trac, depending on the size. BFGoodrich appears across all four primary sizes, Nitto is available in several 18-, 19-, and 20-inch fitments, and Pro-Trac adds appearance-focused options in selected sizes.
Brand comparison is most useful after the correct size is confirmed, since not every brand or series appears in every LaCrosse fitment. Once the wheel diameter is known, it becomes easier to compare whether the goal is a blackwall performance-style tire or a redline or raised white letter option in the sizes where those are offered.
Restoration & Appearance
Which tire should I choose for a period-style 2014 Buick LaCrosse?
A period-style choice for a 2014 Buick LaCrosse starts with keeping the correct original wheel diameter and tire size for the exact trim. Since this is a modern sedan with radial metric fitments, the most appearance-driven choices come from sidewall treatment and tire series rather than from changing construction type.
For a more restrained factory-era look, blackwall options keep the presentation clean and contemporary. In certain 18-inch and 20-inch sizes, redline or raised white letter versions create a more customized look. The better approach is to match the visual style to the car's wheel package and trim character instead of forcing a sidewall style that was not offered in that size.
How does tire construction affect the appearance of a restored 2014 Buick LaCrosse?
On a 2014 Buick LaCrosse, construction is straightforward because the primary fitments are radial tires across every listed size. That means the visual differences come less from bias-ply versus radial appearance and more from the profile, wheel diameter, sidewall treatment, and tire series chosen within the correct size.
A 17- or 18-inch setup presents differently than a 19- or 20-inch package because the sidewall height changes with the wheel diameter. Owners aiming for a clean, restoration-oriented look should keep the correct size for the trim first, then choose the sidewall style that best suits the car's intended presentation without changing the overall fitment character.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2014 Buick LaCrosse?
Yes. Modifications can affect tire fitment on a 2014 Buick LaCrosse, especially if the car has aftermarket wheels, altered suspension height, or body changes that differ from the original setup. Because this model already uses several wheel diameters from 17 to 20 inches, even a small change can alter clearance and sizing requirements.
Checking the actual wheel diameter and width is the first step, followed by a close look at fender, strut, and steering clearance. A LaCrosse that has been lowered or fitted with non-original wheels may need more careful measurement before replacing tires, even when the sidewall shows one of the standard sizes used on this model.
What should I inspect before driving a 2014 Buick LaCrosse on new tires?
Before driving a 2014 Buick LaCrosse on new tires, inspect the wheels for damage, confirm the tire size matches the rim diameter, and make sure inflation pressure is set correctly for the installation. It is also smart to look for uneven wear patterns that could point to alignment or suspension issues.
A short, careful road test helps confirm there is no rubbing, vibration, or steering interference after installation. Rechecking pressure after the first drives is worthwhile, and any sign of contact at full steering lock or over bumps should be addressed immediately, especially on the larger 19-inch and 20-inch LaCrosse wheel packages.
How often should tires on a 2014 Buick LaCrosse be inspected?
Tires on a 2014 Buick LaCrosse should be inspected regularly, not just when tread appears low. A routine check should include tread wear, visible cuts, bulges, cracking, and any signs of ongoing air loss, since all four primary LaCrosse sizes rely on proper inflation and even wear for stable road manners.
Cars that are driven less often still benefit from frequent inspection because age and storage conditions can affect the tire long before the tread is gone. Looking over the tires before longer drives is especially important, and any mismatch in size, uneven wear, or repeated pressure loss should be corrected before the car returns to regular road use.
