1963 Buick Special Tires

The primary tire size for a 1963 Buick Special is 650-13. This is a numeric bias-ply size used on a 13-inch rim, and it is the size associated with the covered Buick Special fitment. For owners trying to return the car to a period-style appearance, 650-13 is the size that sets the baseline.

That does not mean every car still wears its original wheel setup. A previous owner may have changed wheels, suspension height, or tire construction, so it is worth confirming the actual rim diameter and wheel width on the car before ordering. Once the 13-inch wheel is verified, the remaining decision usually comes down to whitewall style, brand, and whether to keep the original bias-ply format or consider one of the available radial equivalents.

The 1963 Buick Special uses a 13-inch rim with its 650-13 tire size. Product fitments in this size are built for 13-inch wheels, and the radial-equivalent guidance for this application also stays in the 13-inch rim diameter family. That keeps rim diameter straightforward even when comparing bias-ply and radial-style alternatives.

Wheel width still matters, especially if the car no longer has its original steel wheels. The available 650-13 bias-ply products are built around a 4.50 to 5.00-inch rim width, while the radial-equivalent guidance points to a 4 to 6-inch range. Measuring the actual wheel before choosing a tire is the safest way to avoid problems with fit, bead seating, and overall tire shape.

Yes. The covered 1963 Buick Special Base uses the same 650-13 bias-ply tire size as the core 1963 Buick Special fitment. That makes sizing relatively simple, because the Base model does not introduce a separate primary tire size or a different rim diameter within the covered application.

Even with shared fitment, the car should still be checked for changes made over the years. A Buick Special that has been modified with different wheels or a later wheel-and-tire package may need closer review before a 650-13 tire is selected. Once the wheel setup is confirmed, the owner can focus on choosing between narrow whitewall and wide whitewall styling or evaluating a radial-equivalent alternative.

For the 1963 Buick Special, 650-13 is the primary bias-ply tire size. That means the original fitment format is a traditional bias-ply construction on a 13-inch wheel, not a modern radial as the baseline specification. Buyers looking for an authentic vintage tire format usually begin with that bias-ply sizing and construction.

Bias-ply and radial tires can create a different look and feel on the road, so the choice should reflect how the car will be used. A restoration-oriented Special may stay with bias-ply construction for appearance, while a more road-driven car may lead the owner toward radial equivalents. Either way, wheel width, overall dimensions, and clearance should be reviewed before changing construction.

Radial equivalents for 650-13 include 175R13 as an 80-series metric radial, P175/75R13 as a 75-series P-metric radial, and P185/70R13 as a 70-series P-metric radial. A 650R13 bias-look radial is also available, giving the 1963 Buick Special an option that keeps a more traditional visual character while moving to radial construction.

Those sizes are useful alternatives, but they are not automatic replacements for every car. The recommended rim width range for the radial equivalents is 4 to 6 inches, and actual fit should still be checked against the Buick’s wheel width, wheel design, and available fender and steering clearance. A car with non-original wheels or suspension changes deserves extra attention before switching from bias-ply to radial.

Start by confirming that the Buick still has 13-inch wheels and that the wheel width matches the radial-equivalent range. For a 650-13 application, the available radial equivalents are 175R13, P175/75R13, P185/70R13, and 650R13, with a recommended rim width range of 4 to 6 inches. That gives a solid fitment framework before any conversion is considered.

After the wheel is verified, inspect steering clearance, fender clearance, suspension condition, and the vehicle’s overall stance. A Special that sits lower than stock or uses later wheels may react differently to a radial than a stock-height car on original-style rims. It is also wise to compare the intended look, since a standard radial and a bias-look radial can change the car’s visual character in different ways.

The first priority is staying with the correct 650-13 size for a 1963 Buick Special if the car still uses its original-style 13-inch wheel setup. From there, selection usually comes down to construction type, whitewall appearance, and brand. In bias-ply form, 650-13 is available from Coker Classic and US Royal in classic vintage-style series.

A buyer should also compare the car’s intended use with the tire’s presentation. A show-focused or restoration-oriented Special may lean toward a traditional bias-ply with the preferred whitewall width, while a driver may spend more time considering radial-equivalent alternatives. Checking wheel width before making that choice is important, especially on a car that may have been updated over the years.

For the 1963 Buick Special in 650-13 bias-ply fitment, the available sidewall styles include narrow whitewall and wide whitewall. That gives owners two distinct vintage presentations while staying within the correct primary tire size. Both styles appear in classic bias-ply product lines rather than as unrelated modern cosmetic treatments.

The better choice depends on how the car is being finished and the visual balance the owner wants. A wider whitewall creates a stronger traditional look, while a narrower whitewall can feel slightly cleaner and more restrained on a compact early-1960s Buick. Appearance is only part of the decision, though, so it still makes sense to confirm wheel fitment and whether the car will remain bias-ply or move to a radial-equivalent setup.

In the 650-13 size used on the 1963 Buick Special, available bias-ply tires come from Coker Classic and US Royal. Those offerings appear in Coker Classic Bias Ply and US Royal Classic Bias Ply series, giving the owner more than one brand path while staying in the correct vintage size and construction for the car.

Brand choice should be considered alongside sidewall style, series presentation, and wheel compatibility rather than treated as a simple one-name answer. Since both brands offer whitewall-focused options in the correct size, the practical comparison is usually about the look the tire gives the car and how it aligns with the owner’s restoration or driving goals. Rim-width compatibility should still be checked before final selection.

A period-style 1963 Buick Special usually starts with the original 650-13 bias-ply size on a 13-inch rim. That keeps the tire in the same vintage sizing system the car used, and it preserves the traditional profile and presentation many collectors want. Within that size, the main visual choices center on brand and whitewall treatment rather than changing to a different primary fitment.

For a restoration where exact originality matters, the tire decision should be checked against marque-specific historical references and the car’s intended finish level. A wide whitewall and a narrow whitewall can each create a distinct early-1960s look without either one automatically being correct for every car. The safest approach is to begin with the proper 650-13 size and then refine the appearance details carefully.

Tire construction changes the visual character of a restored 1963 Buick Special more than many owners expect. A 650-13 bias-ply tire keeps the car in its original sizing language and generally supports a more traditional early-1960s presentation. A modern radial equivalent can still work visually, but it may give the Buick a slightly different stance or sidewall impression depending on the format chosen.

That is why construction should be part of the restoration plan, not just a driving decision made at the end. A standard radial like 175R13 or P175/75R13 tends to emphasize modern sizing convention, while a 650R13 bias-look radial can help retain a more vintage appearance. Matching construction to the car’s restoration goals often matters just as much as selecting the right whitewall width.

Yes. Modifications can change how a 1963 Buick Special accepts its original 650-13 tire size or any radial equivalent. Different wheel widths, aftermarket wheels, altered ride height, or suspension changes can all affect clearance and the way the tire sits on the rim. Even when the rim remains 13 inches, the overall setup may no longer match a stock wheel-and-tire package.

That is why the actual car should be inspected before choosing a new set of tires. Measure rim diameter and width, then look at clearance near the fenders, steering components, and suspension through the full range of motion. A Special that has been lowered or updated should never be treated exactly like a stock car when evaluating a bias-ply tire or one of the available radial-equivalent sizes.

Before driving a 1963 Buick Special on new tires, inspect the wheels, valve stems, lug hardware, and overall wheel condition, then verify that the tire size matches the car’s actual setup. On a collector car, it also makes sense to check for signs of suspension wear, steering play, or alignment issues that could affect how the new tires behave once the car is back on the road.

Tire condition should continue to be monitored after installation, especially during the first few drives. Watch for air loss, rubbing, unusual wear patterns, or any vibration that suggests a wheel or fitment issue. A car that has been parked for long periods deserves a careful road-readiness check, since old bushings, weak shocks, or wheel damage can show up quickly once fresh tires are mounted.

Maintaining 650-13 tires on a collector 1963 Buick Special starts with regular pressure checks, visual inspection, and watching for cracking, bulges, cuts, or uneven tread wear. Collector cars often spend more time parked than driven, so tire condition can decline with age even when the tread still looks good. That makes routine inspection just as important as mileage-based maintenance.

Storage conditions also matter. Keeping the Buick away from prolonged sunlight, heat, moisture, and ozone sources helps protect the sidewalls and preserve appearance over time. The tires should also be checked before any longer drive, since a low-use car can develop flat spotting or lose pressure while parked. A short walk-around and pressure check are simple habits that help prevent avoidable road-use problems.