Buick Somerset Regal Tires

Buick Somerset Regal uses two tire sizes in the 1985 model year: 185/80R13 and 205/70R13. Both are radial 13-inch sizes, but they are not the same overall shape. The 185/80R13 is the narrower, taller-profile option, while the 205/70R13 is wider with a lower profile. The listed 185/80R13 products fit 5.00 to 6.50 inch rim widths, and the listed 205/70R13 product fits 5.50 to 7.50 inch rim widths.

That means the correct tire for a Buick Somerset Regal depends on the wheel-and-tire package actually fitted to the car. Check the existing tire size, confirm the wheel width if possible, and compare the look you want, since the available choices also differ in sidewall style. A whitewall-equipped car and a blackwall-equipped car may point you toward different products even though both use 13-inch wheels.

A 185/80R13 tire for a Buick Somerset Regal is a metric radial size. The 185 is the section width in millimeters, the 80 is the aspect ratio, meaning the sidewall height is 80 percent of the section width, the R identifies radial construction, and the 13 is the wheel diameter in inches. On this application, the listed products fit 13-inch wheels with rim widths from 5.00 to 6.50 inches.

For a Buick Somerset Regal owner, that decoding matters because 185/80R13 is not interchangeable with every other 13-inch tire. Width, sidewall height, and approved rim width all affect stance and fit. If your car currently carries a narrower whitewall tire, this size is often the first one to verify against the tire already mounted and the wheel width on the car.

A 1985 Buick Somerset Regal has 2 tire sizes listed because Buick used two different 13-inch radial fitments within the same model year: 185/80R13 and 205/70R13. This is a same-year size split rather than a wheel-diameter change, since both sizes fit 13-inch rims. The difference is in tire width, profile, and the rim-width range each size is intended to use.

That split means year alone is not enough to choose a tire for a Buick Somerset Regal. Start by checking the size on the tire currently mounted, then compare it to the wheel width and the look of the car. If the car is being restored, period photos, factory literature, or a Buick specialist can help confirm whether the narrower whitewall or wider blackwall-style fitment is more appropriate.

The quickest way to confirm the correct tire size for a 1985 Buick Somerset Regal is to inspect the sidewall of the tires already on the car and verify whether it reads 185/80R13 or 205/70R13. Both sizes were used in 1985, and both fit 13-inch wheels, so the distinction comes down to the exact wheel-and-tire package. The listed rim-width ranges also help separate them: 5.00 to 6.50 inches for 185/80R13 and 5.50 to 7.50 inches for 205/70R13.

If the car has been restored or modified over the years, do not assume the current tires are original to the car. Measure the wheel width, compare the car’s present stance, and decide whether you are preserving an existing setup or returning the Buick Somerset Regal to a more period-correct appearance. That extra step helps avoid choosing a tire that fits the rim diameter but not the intended wheel width or visual character.

Buick Somerset Regal tires are available here in blackwall, narrow whitewall, and wide whitewall styles. The 185/80R13 size includes a 0.625 inch narrow whitewall and 2.875 inch wide whitewall options, while the 205/70R13 listing is a blackwall Michelin radial. That gives Buick Somerset Regal owners a real choice between a more formal appearance and a more understated performance-oriented look.

Sidewall style can change the entire presentation of a Buick Somerset Regal even when the wheel diameter stays the same. A whitewall tire tends to suit a more traditional Buick look, while a blackwall usually feels more contemporary to the 1980s compact coupe theme. If the car is being restored, match the sidewall style to period photos, trim level cues, and the overall personality you want the car to project.

Buick Somerset Regal tires are available here from Maxxis, BFGoodrich, Coker Classic, and Michelin. Maxxis, BFGoodrich, and Coker Classic appear in 185/80R13, while Michelin appears in 205/70R13. All listed products are radial tires, but they differ in sidewall styling and tire series, which is useful for owners balancing appearance with period feel.

Brand choice on a Buick Somerset Regal should follow the correct size first, then the intended look of the car. If your car calls for 185/80R13, you have multiple whitewall choices with different visual treatments. If your car uses 205/70R13, the Michelin fitment points toward a blackwall presentation. Matching brand and sidewall style to the car’s purpose often produces a better result than choosing by name alone.

Buick Somerset Regal tires are offered here in several distinct radial series: Maxxis Radial, Silvertown Radial, Star Series, and Michelin XDX-B. All are radial constructions, but they are presented in different sizes and sidewall treatments. The 185/80R13 choices focus on narrow or wide whitewall styling, while the 205/70R13 Michelin XDX-B is a blackwall fitment in the wider size.

For a Buick Somerset Regal owner, the practical difference is not a shift from bias-ply to radial, but a choice between appearance, dimensions, and intended character. A whitewall radial can support a more formal Buick presentation, while the blackwall Michelin leans toward a more restrained 1980s road-car look. Start with the correct size for the car, then use the series and sidewall style to fine-tune the final result.

A Buick Somerset Regal should be stored on a clean, dry surface away from direct sunlight, electric motors, welders, and ozone sources that can age rubber. Keep the tires inflated to an appropriate pressure for storage, and move the car periodically so one section of the tread is not carrying the load for months at a time. Clean tires with mild soap and water rather than harsh dressings that can dry or discolor the sidewalls.

Collector cars like Buick Somerset Regal often spend long periods parked, and that low-use pattern can age tires in ways tread depth does not reveal. If the car sits for extended periods, tire cradles or occasional repositioning can help reduce flat spotting. Whitewall-equipped tires also benefit from careful cleaning habits, since aggressive cleaners can damage the finish that gives the car its period-correct appearance.

Tires on a Buick Somerset Regal should be inspected at least every few months during storage and before every meaningful drive. Look for cracking, weather checking, sidewall damage, tread separation, uneven wear, and signs of impact or curb damage. Because the Buick Somerset Regal uses two different 13-inch sizes, inspection should also include confirming that all four tires match the intended size and are mounted on suitable wheel widths.

Regular inspection matters especially on a collector Buick Somerset Regal because a car that is driven infrequently may still develop age-related tire issues. Pay close attention after winter storage, after any long highway trip, or if the steering feel changes. Catching a pressure loss, sidewall defect, or mismatch early is far easier than dealing with vibration, poor tracking, or a roadside failure later.

Tires on a Buick Somerset Regal should be replaced when age, cracking, hardening, impact damage, vibration, or structural deterioration appear, even if tread depth still looks usable. Collector tires can age out before they wear out, especially on a low-mileage car that spends long periods parked. Tread alone is not a reliable measure of tire serviceability on a vintage-use Buick Somerset Regal.

The practical rule is to evaluate the tire as a whole, not just the amount of remaining rubber in the grooves. If the car has older tires with visible weathering or an unfamiliar service history, replacement is often the safer path before regular road use. That is particularly important if the Buick Somerset Regal is returning to service after a long layup or if it still carries tires installed many years ago.

Buick Somerset Regal appears here with two 1985 tire sizes: 185/80R13 and 205/70R13, both in radial construction. The available products also show different visual treatments, including narrow whitewall, wide whitewall, and blackwall styles. That indicates there was more than one valid Buick Somerset Regal tire presentation within the model year rather than a single universal answer for every car.

For a restoration, the best approach is to match the Buick Somerset Regal’s exact configuration, surviving original tires if present, period photography, and factory literature. Sidewall style is as important as size when the goal is authenticity. A car preserved with a formal Buick appearance may suit a whitewall radial, while another example may be more accurately represented by the wider blackwall fitment.

Correct tire fitment can affect both the presentation and judging of a Buick Somerset Regal because tire size, sidewall style, and overall stance are immediately visible. A Buick Somerset Regal on the wrong profile or with an obviously mismatched sidewall treatment can look out of character even if the tire physically fits the wheel. Judges and experienced enthusiasts often notice those details quickly.

For owners aiming at show presentation, it is worth matching the Buick Somerset Regal’s tires to the car’s era, trim personality, and original appearance as closely as possible. The difference between a narrow whitewall, a wide whitewall, and a blackwall is not cosmetic trivia on a Buick. Marque clubs, brochures, and unrestored reference cars can help settle those choices when authenticity matters.

Buick Somerset Regal restoration choices here include narrow whitewall, wide whitewall, and blackwall tires, depending on size. The 185/80R13 fitment is available in both narrow and wide whitewall versions, while the 205/70R13 option is blackwall. That means the correct sidewall style for a Buick Somerset Regal restoration depends on the exact wheel-and-tire setup and the look the individual car originally carried.

Choosing the right sidewall style is often the detail that makes a Buick Somerset Regal look finished rather than merely fitted with serviceable tires. A more traditional Buick visual theme generally favors whitewalls, while a sportier or more understated presentation points toward blackwalls. If originality is the goal, compare the tire choice to factory images and period dealer material rather than selecting purely by personal taste.

Modern radial tires in the listed Buick Somerset Regal sizes can be appropriate for public-road use when they are the correct size for the car, mounted on suitable wheels, and maintained in sound condition. Buick Somerset Regal uses radial 13-inch tires in both listed sizes, and proper matching of tire size to wheel width is important for predictable behavior. Condition, age, inflation, and overall vehicle mechanical health matter as much as the size itself.

Safe road use starts with a complete pre-drive check rather than assuming any tire that holds air is ready for service. Inspect the tires, verify pressures, and make sure the car tracks, brakes, and steers correctly before regular driving. A Buick Somerset Regal that has sat for years may need a broader mechanical recommissioning, so the tires should be considered one part of the total roadworthiness picture.

Before driving a Buick Somerset Regal, check tire pressure, visible sidewall and tread condition, valve stems, wheel fasteners, and whether all four tires are the intended size. On this model, that also means confirming whether the car is running 185/80R13 or 205/70R13 and ensuring the wheel width suits that tire. Uneven wear, flat spotting, or vibration after storage should be treated as warnings rather than inconveniences.

A Buick Somerset Regal that is only driven occasionally benefits from a slow, deliberate pre-drive walkaround every time it leaves the garage. If the car has been parked for a season, add a short initial test drive at moderate speed to evaluate braking, steering response, and ride quality. That habit helps catch age-related tire problems and wheel-fit issues before they become a safety concern on the road.

A Buick Somerset Regal should only be driven at speeds appropriate to the age, condition, and exact specification of the tires actually fitted to the car. Even when the correct size is installed, an older collector car tire should not be treated the same way as a fresh everyday-driver tire of unknown service history. Tire age, storage history, inflation, and overall vehicle condition all influence how conservatively the car should be driven.

The sensible approach is to build speed gradually after inspection and to avoid sustained high-speed running until the Buick Somerset Regal has proven stable and smooth on the road. If the tires are older, recently awakened from long storage, or simply unfamiliar, keep speeds moderate and reassess after the first few drives. A calm, measured road test is far more appropriate than assuming the car is ready for modern traffic conditions immediately.