Buick Regal Tires

Buick Regal uses a wide span of sizes across its production run: G78-14 and H78-14 for 1974 on 14-inch wheels; GR70-15, GR78-15, and FR78-15 from 1975 to 1977 on 15-inch wheels; FR78-14 and GR78-14 in 1977 on 14-inch wheels; 195/75R14, 205/70R14, and 205/75R14 from 1978 into the early 1990s on 14-inch wheels; 215/65R15, 195/70R15, 205/70R15, and 215/70R15 on 15-inch wheels; 215/60R16 and 225/60R16 on 16-inch wheels; and 235/50R17, 235/50R18, 245/40R19, and 255/35R20 on later 17-, 18-, 19-, and 20-inch wheels.

The practical takeaway is that Buick Regal fitment is year- and wheel-package-specific, not a single-size answer. Start with the model year, then confirm the actual wheel diameter on the car, and finally match the exact size shown on the tire placard, original paperwork, or an existing known-correct tire before deciding among whitewall, blackwall, redline, or raised-letter options.

G78-14 is a period alphanumeric bias-ply size used on Buick Regal in 1974. The letter G identifies the tire's width class, the 78 indicates the aspect-series designation used in that era, and the 14 is the wheel diameter in inches. Available products in G78-14 are built for 14-inch rims and are bias-ply construction.

That matters because a modern buyer might assume any 14-inch tire will substitute, but the section width, profile, and construction type still need to match the car's intended fitment. On a 1974 Buick Regal, confirm whether the car calls for G78-14 or the wider H78-14, and remember that the listed bias-ply products in this size call for tube-type installation.

A 1977 Buick Regal has four listed sizes because that model year includes both a rim-diameter split and multiple width/profile combinations. The year includes FR78-14 and GR78-14 on 14-inch wheels, plus GR70-15 and GR78-15 on 15-inch wheels. That means the year alone is not enough to choose a tire correctly.

The best approach is to identify the actual wheel diameter first and then narrow the fitment from there. If the car carries 14-inch wheels, it belongs in one of the FR78-14 or GR78-14 groupings; if it carries 15-inch wheels, it belongs in one of the GR70-15 or GR78-15 groupings, and the specific size should be verified against the car's original specifications.

Buick Regal uses several rim diameters across its full production span here: 14-inch, 15-inch, 16-inch, 17-inch, 18-inch, 19-inch, and 20-inch. The earliest listed products are 14-inch, Buick Regal moves into 15-inch sizes in 1975, adds 16-inch choices in 1989, and later generations expand into 17-, 18-, 19-, and 20-inch combinations. Several individual model years include more than one wheel diameter.

That makes wheel measurement more important than assumptions based on model name alone. If the car is from a transition year such as 1977, 1984, 1989, or 2012, confirm the wheel diameter directly from the wheel, the original build information, or the placard before choosing a tire size, because the correct fitment depends on that measurement first.

A 1989 Buick Regal can use 205/70R14, 205/70R15, or 215/60R16, so the correct size depends on the specific wheel package on the car. Those three sizes correspond to three different rim diameters: 14-inch, 15-inch, and 16-inch. The size should match the wheel diameter first and the original Buick specification second.

On a car from a multi-size year, inspect the actual wheel, read the placard if present, and compare against any surviving factory paperwork or trusted restoration records. Once the base size is confirmed, then choose among the available sidewall styles and tire series that fit that exact size, rather than working backward from appearance alone.

Buick Regal tire offerings here include a broad mix of sidewall styles: blackwall, narrow whitewall, wide whitewall, pin-white-stripe, dual-white-stripe, redline, dual-redline, RWL, OWL, and raised-yellow-letter. Early 1970s sizes lean toward whitewall bias-ply presentations, mid-period radial options add redlines and raised white letters, and later performance-oriented sizes are more heavily blackwall with a few specialty redline or RWL choices.

The right sidewall treatment depends on what role the Buick Regal is playing in your collection. A restoration-minded 1974 car will usually call for a different visual treatment than a 1990s driver or a 2010s sport model, so use the sidewall style to support the era and character of the specific Regal once the correct size has been settled.

Buick Regal tires in these sizes are available from BFGoodrich, Coker Classic, Goodyear, Tornel, Maxxis, Travelstar, American Classic, Cooper, Michelin, Avon, Dunlop, Vredestein, Nitto, and Pro-Trac. Some brands focus on period-style whitewall or redline collector tires, while others appear in later blackwall and performance radial sizes. Brand availability changes considerably by size and generation.

That means the brand choice should follow the fitment, not the other way around. Once the correct Buick Regal size is confirmed, compare the brands available in that exact size by construction style, sidewall treatment, and the overall look you want, especially if the car is being restored to a period appearance rather than used as a modernized driver.

Buick Regal fitments here span many tire series, including Silvertown Classic Bias Ply, Coker Classic Bias Ply, Star Series, Coker Classic Radial, American Classic Radial, Silvertown Radial, Radial T/A, Michelin XWX, Cobra Radial G/T, Eagle GT, Eagle NASCAR, GM Custom Tread, Steelgard, Sport Classic, CR6ZZ, g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, Street Pro III, and others. The key differences are construction approach, sidewall style, and intended visual period, from classic bias-ply looks to modern performance radials.

For a Buick Regal owner, that means the tire series should match the car's era and the way it will be used. A 1974 Regal restored for authenticity points toward the bias-ply family, a late-1970s or 1980s car may suit whitewall or redline radials, and a 2011-2017 Regal typically belongs with modern blackwall or sport-oriented radial series.

A Buick Regal should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, electric motors, ozone sources, and petroleum products. Tires last longer when the car is clean, inflation is maintained, and the vehicle is not left sitting for long periods in one exact position. Collector cars benefit from regular movement even when mileage stays low.

For practical care, keep the Buick Regal on a clean floor surface, inflate the tires to an appropriate pressure for storage and use, and roll the car occasionally to avoid flat spotting. If the car will sit for an extended season, many owners also reduce continuous load on the tires with careful storage practices that do not distort suspension geometry.

Tires on a Buick Regal should be inspected regularly even if the car sees very little mileage. Check for air loss, sidewall cracking, tread separation, uneven wear, age-related hardening, and signs that the tire is rubbing because the wrong size or wheel width has been installed. Collector tires often age out before they wear out.

A good habit is to inspect the Buick Regal before each outing and give it a more thorough look several times per season. If the car has been parked for months, examine each tire closely before moving the car any distance, because long storage can reveal age issues that were not obvious during the last drive.

Tires on a Buick Regal should be replaced when age, cracking, hardening, bulges, vibration, separation, or repeated air loss indicate deterioration, even if the tread still looks usable. Collector vehicles often accumulate very little mileage, so tread depth alone is not a reliable measure of serviceability. Structural condition matters more than appearance.

The practical rule is to treat time and condition as seriously as mileage on a Buick Regal. If the tires are old enough that their service history is uncertain, or if the car has spent long periods parked, have them evaluated and replace them when age-related condition starts to outweigh the value of continued use.

Original Buick Regal tire fitment varies widely by year. The earliest years here use alphanumeric sizes such as G78-14, H78-14, GR70-15, GR78-15, FR78-15, FR78-14, and GR78-14, while later Regals move into metric radial sizes such as 195/75R14, 205/70R15, 225/60R16, and beyond. The available product families also show Buick Regal spanning bias-ply, bias-look radial, and radial-era replacement choices.

For a restoration, the right answer is tied to the exact year and configuration of the Buick Regal, not just the model name. Use the car's original paperwork, surviving placards, and marque-club guidance to determine which size and visual style were fitted to that specific car, then choose the closest appropriate tire family in the correct dimensions.

Correct tire fitment can affect both the presentation and the judged authenticity of a Buick Regal. Size, sidewall treatment, wheel diameter, and overall stance all influence how accurate the car looks, especially on 1970s through 1990s collector examples where whitewalls, redlines, or raised-letter sidewalls can be part of the period character.

For owners building a judged Buick Regal, the safest path is to match the tire size and sidewall appearance to the specific year and configuration rather than choosing a generic replacement. Marque clubs, factory literature, and period photos are useful references when deciding whether a wide whitewall, pin stripe, redline, blackwall, or raised-letter look is appropriate.

The correct sidewall style for a Buick Regal restoration depends on year and theme, because the available styles here range from wide whitewall and narrow whitewall to pin-white-stripe, dual-white-stripe, redline, dual-redline, blackwall, RWL, OWL, and raised-yellow-letter. Earlier Regals generally align with more traditional whitewall presentations, while later sporty and performance-oriented cars may suit blackwall or raised-letter styles.

A restoration-minded Buick Regal owner should treat sidewall style as part of the car's visual identity, not as an afterthought. Once the correct size is confirmed, select the sidewall that matches the period look you are trying to recreate, especially if the car will be judged or displayed alongside well-researched original examples.

A Buick Regal can be driven on public roads when the tires are the correct size for the wheel, are in sound condition, and are appropriate to the car's era and intended use. Many Buick Regal sizes here are modern radial designs suitable for normal collector-car road use, while the earliest 1974 offerings are period-style bias-ply tires that require more traditional handling expectations.

Safety depends on matching the tire to the exact Buick Regal application and maintaining the whole chassis around it. Before regular road use, confirm that the wheels, suspension, alignment, brakes, and tire age all support the way the car will be driven, particularly if the vehicle has sat unused or recently changed tire construction type.

Before driving a Buick Regal, check inflation pressure, sidewall condition, tread condition, wheel diameter correctness, valve stems, and any signs of rubbing or suspension-related uneven wear. On multi-size years, also verify that the tire size actually matches the wheel diameter on the car, since several Buick Regal years were offered with multiple wheel packages.

A short walk-around catches many problems before they become roadside issues. If the Buick Regal has been parked for an extended period, inspect more carefully for flat spotting, cracking, and air loss, and take the first few miles gently so you can feel for vibration, pull, or other warning signs that the tires need closer attention.

Appropriate speed for a Buick Regal depends on the tire type fitted to the car. Later metric radial sizes are generally intended for normal road use within the tire's service category, while a 1974 Buick Regal on period-style bias-ply tires should be driven with more conservative expectations for tracking, braking feel, and response compared with a modern radial-equipped car.

The practical approach is to let the oldest component and most period-correct setup define the pace. If the Buick Regal is fitted with collector-style bias-ply tires, keep speeds moderate and avoid abrupt maneuvers; if it is fitted with correct-condition modern radials, the car may feel more settled, but age, inflation, suspension condition, and alignment still set the safe operating limit.