2016 Buick Tire Fitment Guide

2016 Buick vehicles use nine sizes across four models: 245/40R20 for Cascada and LaCrosse; 225/55R17, 235/50R18, and 245/45R19 for LaCrosse; 235/50R18, 245/40R19, 255/35R20, and 235/50R17 for Regal; and 225/50R17 plus 235/45R18 for Verano. Rim diameters span 17, 18, 19, and 20 inches, so the year and make alone are not enough to choose a tire correctly.

That means the first check should be your model and wheel diameter, then the exact size on the current tire or door-jamb placard. Rim width ranges also vary by size, from about 6.0 inches on some 17-inch fitments up to 10.0 inches on 255/35R20, so matching the tire to the wheel is just as important as matching it to the car.

On a 2016 Buick, 245/40R20 means a radial tire that is 245 millimeters wide, with a 40-series aspect ratio, built for a 20-inch wheel. That size appears on the Cascada and on certain LaCrosse configurations. Available versions include Blackwall and RWL sidewalls, and speed ratings in this size range from W to Y depending on the tire.

The practical takeaway is that 245/40R20 is tied to a specific 20-inch wheel package, not to every 2016 Buick. If your car wears 20-inch wheels, confirm the exact size on the car before choosing between a subtle blackwall look and a more assertive raised-white-letter style, and make sure the tire’s rim-width range matches your wheel.

No. 2016 Buick models do not share one universal tire size. The Cascada uses 245/40R20, the LaCrosse spans four sizes from 225/55R17 through 245/40R20, the Regal spans four different sizes from 235/50R17 through 255/35R20, and the Verano uses either 225/50R17 or 235/45R18.

That variation matters because some sizes overlap between two models while many others belong to only one model and wheel package. If you are comparing tires at the year-and-make level, treat this page as the starting point, then move to your exact model and confirm the wheel diameter before making a final selection.

Most 2016 Buick sizes are available in Blackwall form, which suits the late-model character of Cascada, LaCrosse, Regal, and Verano. Two exceptions add appearance choices: 245/40R20 is also offered in RWL form, and 225/55R17 is available with a Wide Whitewall option. Those two sizes give owners room to lean either toward a contemporary look or a more custom visual statement.

For a factory-like 2016 appearance, Blackwall is the most natural direction across the Buick lineup. Wide whitewalls and raised white letters are more about styling preference than original late-model Buick presentation, so they tend to make the strongest sense for a personalized build or a very deliberate visual theme rather than a stock-appearing restoration.

2016 Buick fitments are covered by BFGoodrich, Nitto, and Pro-Trac, depending on size. BFGoodrich appears across every size family here, Nitto covers many of the 18-, 19-, and 20-inch applications plus 225/50R17, and Pro-Trac appears in 245/40R20 with an RWL sidewall. Brand choice therefore depends partly on which Buick model and wheel package you have.

If you want the broadest range of choices, BFGoodrich covers the most 2016 Buick sizes and includes both performance-style blackwalls and one whitewall option in 225/55R17. Nitto tends to expand the choices in the more contemporary low-profile sizes, while Pro-Trac adds a distinctive visual option for buyers running 245/40R20 and wanting raised white letters.

Across several 2016 Buick sizes, both the BFGoodrich g-Force COMP-2 A/S and g-Force Phenom T/A appear in the same fitment, but their marked load and speed details can differ by size. In 245/40R20, for example, the Phenom T/A carries a 99Y marking and a 1,709-pound load figure at 50 psi, while the COMP-2 A/S uses a 99W marking. Similar W-versus-Y differences also appear in 235/50R18, 245/45R19, 245/40R19, and 255/35R20.

That means the decision is not just about brand loyalty within BFGoodrich, but about the exact specification marked on the tire you want to run. If two tires are available in your size, compare the speed symbol, load rating where shown, and approved rim-width range against your wheel and how you use the car before settling on one series.

Rim width depends on the exact 2016 Buick tire size. 225/55R17 and 225/50R17 fit roughly 6.0 to 8.0-inch wheels, 235/50R17 fits 6.5 to 8.5 inches, 235/50R18 fits 6.5 to 8.5 inches, 235/45R18 fits 7.5 to 9.0 inches, 245/45R19 fits 7.5 to 9.0 inches, 245/40R19 and 245/40R20 fit about 8.0 to 9.5 inches, and 255/35R20 fits about 8.5 to 10.0 inches.

Those ranges are important because the same tire size can be safe on several wheel widths, but not on every wheel that shares the right diameter. Before mounting a new set, compare the tire’s approved rim-width range to your actual wheel width so the sidewall shape and tread profile stay within the manufacturer’s intended setup.

The 2016 Buick tires covered here are modern radial fitments, and the size markings do not indicate tube-type construction. These applications are set up as tubeless radial tires in normal passenger-car use, with no tube-type marking such as TT appearing in the size information. That matches what you would expect for late-model Buick wheels and tire design.

Even so, the wheel condition still matters. If you are dealing with damaged beads, corrosion, or aftermarket wheels of uncertain quality, solve the wheel issue rather than trying to treat a tubeless passenger-car application like an older tube-type setup. A clean bead seat, sound valve stem, and correct wheel width are the real installation priorities here.

No single original 2016 Buick wheel works with all nine tire sizes because the lineup uses four different rim diameters: 17, 18, 19, and 20 inches. A 17-inch Buick wheel can only accept the correct 17-inch tire sizes, an 18-inch wheel only the 18-inch sizes, and so on. Diameter is the first non-negotiable checkpoint.

Even when two tires share the same rim diameter, you still need to confirm wheel width. For example, two 20-inch sizes do not automatically interchange just because they both fit a 20-inch wheel. Check the wheel’s actual width and compare it to the approved range for the tire size you want to run before assuming a swap will work.

A stored 2016 Buick should be kept out of direct sunlight, away from electric motors or ozone-producing equipment, and on a clean, dry surface. Maintaining proper inflation during storage matters because low-profile radial tires can develop shape change if they sit under load for long periods. Rolling the car periodically or using stands correctly can help reduce stress on the tires if the Buick will be parked for an extended season.

Cleanliness and environment matter as much as mileage on a modern Buick tire. If the car is a fair-weather Cascada, a garage-kept LaCrosse, or a low-use Regal or Verano, stable temperature, dry storage, and occasional movement will do more for tire longevity than simply letting the car sit untouched month after month.

Tires on a 2016 Buick should be judged by age as much as by tread depth. A good rule for collector and low-mileage use is to begin evaluating tires closely once they reach about five to seven years of age, and to treat around ten years as a serious replacement threshold even if the tread still looks serviceable. The DOT date code on the sidewall is the best way to confirm the tire’s actual age.

That approach matters on cars that are driven infrequently, because a lightly used tire can age out before it wears out. If your Buick still has older tires with good-looking tread, inspect for hardening, sidewall cracking, or uneven wear and consider replacement on age alone rather than waiting for mileage to make the decision.

Tires on a 2016 Buick should be inspected before every drive and again before any longer highway outing. Check inflation, visible cracking, tread wear, cuts, punctures, and any bulges in the sidewall or tread area. On a late-model Buick with low-profile radials, curb damage and impact damage deserve extra attention because shorter sidewalls can hide problems until they become serious.

A quick walkaround is often enough to catch problems early, especially on cars that sit for stretches between drives. If the Buick feels different on the road, pulls, vibrates, or loses pressure over time, follow up with a closer wheel-and-tire inspection rather than assuming the issue is only alignment or suspension related.

A 2016 Buick Cascada belongs to the modern era of passenger-car tire design, so its original-type fitment approach is radial rather than bias-ply. The size associated with the Cascada here is 245/40R20, which reflects its late-model 20-inch wheel package and contemporary low-profile tire design. Original-equipment branding can vary by assembly and market, so the most accurate confirmation point is the tire placard and the tire size that came on the car.

If originality matters, stay with the same size, construction type, and general sidewall character that the car used when new. For a 2016 Cascada, that usually means a modern blackwall radial rather than a stylized alternative, though owners pursuing a custom look may still choose differently for appearance once they have confirmed the fitment.

Yes, correct tire fitment matters on a shown 2016 Buick, although the standard is different from an earlier concours restoration. Judges and knowledgeable enthusiasts will still notice whether the tire size matches the car’s wheel package and whether the sidewall style suits the model year. A 2016 Buick generally looks most authentic with the proper modern radial size and a contemporary sidewall treatment.

For event use, the safest approach is to match the exact size and wheel diameter that belong on your Cascada, LaCrosse, Regal, or Verano configuration. If you are entering marque-specific or highly detailed judging, confirm whether non-stock visual treatments such as whitewalls or raised white letters fit the tone of the class before finalizing the set.

On several 2016 Buick sizes, BFGoodrich g-Force Sport COMP-2 and Nitto NT555 G2 overlap but do not mirror each other exactly. In 235/50R18, both use a W speed rating, while the Nitto carries an XL marking and a 1,819-pound load figure at 50 psi. In 225/50R17, the Nitto again shows an XL marking and a 1,653-pound load figure at 50 psi, while the BFGoodrich Sport COMP-2 shows a 1,477-pound figure at 51 psi.

That kind of comparison matters when you want to distinguish between two modern radial choices in the same size. Rather than choosing by name alone, compare the sidewall markings, load figures where shown, and rim-width range for your exact size. Those details help you match the tire more closely to the wheel package and the way the Buick is actually used.

Yes, the radial tire sizes used on 2016 Buick vehicles are appropriate for normal highway use when the tires are in good condition, properly inflated, and matched to the correct wheel. The products here carry W and Y speed ratings depending on size and tire series, which correspond to 168 mph and 186 mph ceilings. Those ratings are far beyond ordinary U.S. highway speeds.

In real-world use, tire condition, inflation, alignment, and the vehicle’s overall mechanical health matter more than the theoretical top-end speed symbol. A well-maintained LaCrosse, Regal, Cascada, or Verano on the correct size tire is better prepared for highway work than a car on aged, underinflated, or mismatched tires, regardless of the printed rating.

Inflation pressure for a 2016 Buick should start with the factory recommendation for your exact model and wheel package, then be cross-checked against the tire’s own sidewall and manufacturer guidance. Several sizes here also show maximum load and pressure figures, such as 1,819 pounds at 50 psi in some 225/55R17 and 235/50R18 applications, 1,874 pounds at 50 psi in 245/45R19, and 1,609 pounds at 50 psi in one 255/35R20 application.

Those maximum figures are load-rating references, not a universal setting to use on every Buick. Do not transfer a pressure from one size to another or from one model to another. The best practice is to use the vehicle placard as your baseline, then make sure the tire you choose is operated within the manufacturer’s stated limits.

Before a longer drive in a 2016 Buick, inspect each tire for cracking, cuts, punctures, bulges, and uneven wear, and confirm all four are at the correct cold pressure. Also inspect the valve stems, check that the spare is serviceable if the car has one, and make sure the tires are the correct size for the wheels fitted to the car. Any persistent vibration or pressure loss should be addressed before the trip.

Tires are only one part of a broader pre-drive routine, but they are the part in constant contact with the road. On a modern Buick that may spend long periods parked between outings, a few minutes spent checking age, pressure, and visible condition can prevent the most common tire-related problems from interrupting an otherwise easy highway drive.