1968 Buick Special Tires

The 1968 Buick Special uses two primary tire sizes: 775-14 and 825-14. Both are bias-ply sizes designed for 14-inch rims, and both appear under Buick Special fitment for this model year.

That makes confirmation especially important before ordering replacement tires. The best next step is to verify the size already fitted to the car, confirm the wheel diameter is still 14 inches, and account for any wheel changes made over the years. Once the correct primary size is established, the choice becomes one of sidewall style, brand, and whether to remain with a traditional bias-ply tire or consider a radial equivalent.

Both primary tire sizes for the 1968 Buick Special, 775-14 and 825-14, are built around a 14-inch rim diameter. That means rim diameter stays consistent even though the vehicle can be associated with two different bias-ply tire sizes.

Rim diameter alone does not settle the full fitment question, because wheel width and the car’s present setup still matter. A Buick that has changed wheels during its life may no longer match its earlier tire size. Measuring the existing wheel and confirming the current tire size on the car helps prevent choosing between 775-14 and 825-14 by guesswork simply because both mount on a 14-inch rim.

The 1968 Buick Special is associated with both 775-14 and 825-14, so buyers encounter more than one correct primary size within the same model year. Both sizes are vintage numeric bias-ply fitments for 14-inch wheels, but they represent different size classes.

In practical terms, that means the car’s actual wheel-and-tire setup has to guide the decision. Many collector cars have had wheels, suspension parts, or replacement tires changed over time, and that can affect which size should stay on the vehicle. Instead of assuming one size is universal, check the current wheel diameter, wheel width, and existing tire markings before narrowing the choice to period-style bias-ply options or radial-equivalent alternatives.

For the 1968 Buick Special, 775-14 is a bias-ply primary tire size. It uses a vintage numeric sizing format rather than a modern metric radial designation, which is why its appearance and selection process feel more traditional than those of newer radial sizes.

That matters because staying with 775-14 bias-ply fitment keeps the original-style sizing convention and opens the door to sidewall treatments such as narrow whitewall, redline, goldline, and blueline. Owners considering a change in construction can look at radial equivalents, but the wheel and vehicle setup still need to be checked rather than assuming that any 14-inch radial with a similar size code will behave the same on the car.

For 775-14, radial equivalents include 195R14, P205/75R14, P215/70R14, and 750R14 as a bias-look radial. For 825-14, the equivalent choices are 205R14, P215/75R14, P225/70R14, and 800R14 as a bias-look radial.

Those options give a 1968 Buick Special owner several ways to move from a vintage bias-ply size into radial sizing conventions while staying in the same general fitment family. The recommended rim-width ranges are 4-6 inches for 775-14 equivalents and 5-7 inches for 825-14 equivalents. Wheel width, overall vehicle clearance, and the car’s present setup should still be confirmed before settling on any radial alternative.

Start by confirming which primary size the car uses now, either 775-14 or 825-14, then compare only the radial equivalents associated with that size. The rim diameter remains 14 inches, but wheel width, tire dimensions, and available clearance still need to match the radial option under consideration.

A conversion also changes the car from traditional bias-ply construction to radial construction, so the decision should fit the Buick’s intended use and appearance goals. Check the wheel condition, verify suspension and steering clearance, and pay attention to any aftermarket wheels or ride-height changes. A bias-look radial can be a useful middle ground when the goal is to preserve a more traditional visual presentation while moving to radial construction.

The first consideration is confirming whether the Buick actually uses 775-14 or 825-14, since both are primary fitments for this model year. After that, compare construction, sidewall appearance, brand, tire series, rim-width suitability, and any load figures shown for the tire you are evaluating.

That approach keeps the choice grounded in the car rather than in appearance alone. A 775-14 buyer may have more visible variety in brands and sidewall treatments, while 825-14 choices are narrower and more centered on straightforward traditional styling. Matching the tire to the car’s current wheel setup, restoration direction, and expected road use will usually lead to a better decision than selecting only by brand name.

Sidewall choices for 1968 Buick Special tires include blackwall, narrow whitewall, redline, goldline, and blueline, depending on the tire size and product selected. The widest appearance variety appears in 775-14, while 825-14 options are more limited and center on blackwall and narrow whitewall treatments.

That variety lets owners tune the look of the car without stepping outside the correct primary size family. A narrow whitewall can support a more traditional presentation, while redline, goldline, or blueline can push the car toward a stronger period-performance or custom visual character. Sidewall appearance should be chosen after size confirmation, not before, since not every style is offered in both 775-14 and 825-14.

Available brands for the 1968 Buick Special include BFGoodrich, Firestone, and US Royal. The broader spread appears in 775-14, while 825-14 offerings are concentrated under BFGoodrich within the Silvertown Classic Bias Ply series.

Brand is only one part of the buying decision, especially on a vintage fitment page like this one. It helps to compare each brand’s available sidewall styles, tire series, rim-width details, and load figures where those are shown. On a car such as the Buick Special, the right choice often comes down to how closely the tire’s appearance and construction match the owner’s restoration goals and current wheel setup.

A period-style 1968 Buick Special starts with the correct primary bias-ply size, either 775-14 or 825-14, matched to the car’s actual setup. From there, a traditional bias-ply tire is the clearest path if the goal is to preserve the look and character associated with late-1960s domestic fitment.

Appearance details then become the real deciding points. The 775-14 size offers the widest range of sidewall treatments, including narrow whitewall, redline, goldline, and blueline, while 825-14 stays more restrained. If exact originality matters beyond a period-style presentation, Buick-specific literature, marque-club references, and restoration records are worth consulting before settling on a stripe or whitewall treatment.

Tire construction can change the visual character of a restored 1968 Buick Special even when the overall fitment remains in the same general size family. A traditional bias-ply tire preserves the vintage sizing format and supports the period-style look most owners expect on a 1960s Buick.

A radial equivalent may be worth considering for road use, but it can also change the presentation depending on the size format selected. Euro-metric and P-metric radials look more modern on the sidewall, while a bias-look radial keeps a more traditional appearance. For a restoration-minded owner, construction choice is not only about road manners but also about how authentic or updated the finished car should appear.

Yes. Even though the 1968 Buick Special is associated with 775-14 and 825-14 on 14-inch rims, changes made over the years can alter what works on the car today. Aftermarket wheels, altered wheel width, suspension changes, or body and fender work can all influence the usable tire size.

That is why the current setup should be inspected before choosing between the two primary sizes or moving to a radial equivalent. Checking wheel diameter is only the start; wheel width, steering clearance, and space around the fenders and suspension matter as well. A collector Buick that has been lowered or fitted with non-original wheels should be measured rather than assumed to match a stock-era configuration.

Before road use, inspect the wheels for damage or corrosion, confirm the tire size matches the car’s setup, and make sure each tire is inflated properly for its intended use. It also helps to check valve stems, lug hardware, and general wheel condition before the Buick goes back into regular service.

The rest of the inspection should focus on the car around the tires. Look for steering or suspension looseness, verify there is no rubbing at full lock or over suspension travel, and make sure the tires clear the body cleanly. On a collector car, a short local test drive followed by a second inspection can reveal clearance issues, air loss, or mounting concerns before a longer outing.

Collector-car tires should be checked regularly even if the 1968 Buick Special is driven only occasionally. Inspect tread and sidewalls for cracking, bulges, cuts, or uneven wear, and watch for slow air loss that can go unnoticed when the car spends long periods parked.

Storage conditions matter almost as much as mileage on a vintage Buick. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps protect the tires between drives. It is also smart to recheck pressure and overall condition before each outing, since low annual mileage can mask age-related deterioration that has little to do with tread depth.