1955 Ford Thunderbird Tires

The 1955 Ford Thunderbird uses two primary tire sizes: 670-15 and 710-15. Both are vintage numeric bias-ply sizes mounted on 15-inch rims, and both are associated with the covered 8 Cyl. Thunderbird. The difference is mainly in section width, with 670-15 representing a narrower fitment and 710-15 a wider one within the same basic sizing family.

Choosing between them starts with the actual wheel setup on the car, not just the model name. A Thunderbird that has been restored, re-wheeled, or fitted with a different tire size in the past should be checked carefully before ordering. Matching the tire size to wheel width and then selecting the preferred sidewall style is the most practical path.

The primary tire fitments for a 1955 Ford Thunderbird use a 15-inch rim diameter. That is true for both 670-15 and 710-15, so the diameter question is straightforward even though two tire sizes are in play. The main variation comes from tire width and the rim-width range associated with individual products in each size.

Rim diameter alone does not settle the fitment decision, especially on a collector car that may have changed wheels over the years. A 15-inch wheel still needs the right width for the tire being considered, and clearance should be checked if the car has any suspension or wheel changes. Verifying the wheel before choosing 670-15 or 710-15 avoids a lot of guesswork.

The covered 1955 Ford Thunderbird 8 Cyl. is associated with both 670-15 and 710-15, rather than one single universal size. Both are bias-ply fitments on 15-inch rims, so the construction and rim diameter stay consistent while the tire width changes. That means the size choice depends on the car’s actual wheel and tire setup.

A buyer should not assume that every 1955 Thunderbird currently on the road is wearing the same width tire. Older restorations, wheel swaps, and long-term ownership changes can all affect what is on the car today. The best approach is to confirm the installed wheel width and current tire size, then choose the correct replacement within that same fitment path.

For the 1955 Ford Thunderbird, 670-15 is a bias-ply tire size. It uses the vintage numeric bias-ply format, where the first number reflects nominal section width and the last number is the 15-inch rim diameter. In the available Thunderbird fitment choices, 670-15 is one of the two primary bias-ply sizes rather than a radial size.

That matters because a true 670-15 keeps the construction style and visual character many owners want on a mid-1950s car. Buyers comparing tires in this size can then focus on brand, sidewall treatment, and wheel-width compatibility. Anyone considering a radial instead should move to an actual radial-equivalent size and verify wheel setup and clearance before changing construction.

For 670-15, radial equivalents include 195R15, P205/75R15, P215/70R15, and the bias-look radial 670R15. For 710-15, the equivalents are 205R15, P215/75R15, P225/70R15, and the bias-look radial 710R15. Those choices cover an 80-series metric radial, a 75-series P-metric radial, a lower-profile 70-series P-metric radial, and a bias-look radial format for each primary size.

These equivalents provide useful alternatives, but they should be checked against the Thunderbird’s actual wheels and surrounding clearance before conversion. Recommended rim widths are 5-7 inches for the 670-15 equivalent group and 6-8 inches for the 710-15 group. Wheel width, overall dimensions, and the car’s current stance all deserve a careful look before switching from bias-ply construction.

A 1955 Ford Thunderbird owner should start by confirming the current primary size, then match it to the correct radial-equivalent group. That means choosing among the equivalents tied to 670-15 or the ones tied to 710-15, rather than treating all 15-inch tires as interchangeable. Wheel diameter, wheel width, and the size category of the proposed radial are the first checks.

Clearance at the fender, steering, and suspension should be reviewed before making the change, especially on a car with older restoration work or aftermarket wheels. A bias-look radial may suit an owner who wants a more traditional appearance, while metric and P-metric radials use a more modern sizing convention. The goal is a verified fitment, not just a shared rim diameter.

The first consideration is which primary size the car actually uses, because the 1955 Ford Thunderbird can be associated with either 670-15 or 710-15. Both are bias-ply sizes on 15-inch rims, but they differ in width and in the wheel-width ranges attached to the available products. Once size is settled, the next decisions involve brand, tire series, sidewall style, and whether a bias-ply or radial-equivalent path fits the car’s purpose.

A restoration-oriented Thunderbird may lean toward traditional bias-ply construction and a sidewall style that complements the car’s presentation. A more road-use-focused setup may lead the owner to compare radial equivalents after checking wheel compatibility. It also helps to compare load figures and product details within the correct size instead of jumping between sizes that may not suit the wheel already on the car.

1955 Ford Thunderbird tire choices include blackwall, narrow whitewall, and wide whitewall styles across the applicable 670-15 and 710-15 bias-ply offerings. That gives the buyer a broad appearance range, from a more understated blackwall look to whitewall presentations that place much more visual emphasis on the tire. The same basic size can look quite different depending on the sidewall treatment selected.

Sidewall choice is often one of the biggest visual decisions on a mid-1950s Thunderbird because the tire is such a visible part of the car’s stance. A buyer should first confirm the correct size, then compare whitewall width and overall presentation within that size. That approach keeps the appearance decision tied to proper fitment instead of treating sidewall style as a separate issue.

The available 1955 Ford Thunderbird tire selection includes Firestone, BFGoodrich, US Royal, Universal Vintage Tire, Goodyear, Coker Classic, Excelsior, Avon, and STA, depending on size. Not every brand appears in both primary fitments, so the exact choice depends on whether the car uses 670-15 or 710-15. Brand selection is closely tied to series availability and sidewall presentation within the correct size.

That means the best way to compare brands is after the size question is settled. Once 670-15 or 710-15 is confirmed, the buyer can look at blackwall versus whitewall treatments, rim-width details, and other product characteristics within that fitment. The practical goal is not just picking a familiar brand name, but choosing the brand and tire series that match the Thunderbird’s wheel setup and intended look.

A period-style 1955 Ford Thunderbird usually starts with one of its primary bias-ply sizes, either 670-15 or 710-15, depending on the car’s wheel and existing fitment. Bias-ply construction keeps the Thunderbird in the traditional sizing and visual language of the mid-1950s. From there, the appearance decision shifts to blackwall, narrow whitewall, or wide whitewall presentation within the correct size.

That does not mean one sidewall or brand is automatically right for every restoration. Some owners want a cleaner blackwall look, while others want a whitewall treatment that emphasizes the car’s personal-luxury character. If originality is being judged closely, it is wise to compare the car against marque references or period documentation before narrowing the final sidewall style.

Tire construction changes more than driving feel on a restored 1955 Ford Thunderbird; it also changes the car’s visual impression. A bias-ply tire maintains the original-style sizing convention and traditional sidewall profile associated with the Thunderbird’s era. A radial equivalent can alter that presentation even when it remains within an appropriate 15-inch fitment family.

For some owners, that makes bias-ply construction the better match for a restoration-centered car, especially when the goal is a distinctly mid-1950s look. Others prefer a bias-look radial because it can preserve more traditional visual cues while moving to radial construction. The right answer depends on whether the priority is historic appearance, driving preference, or a balance of both.

Yes, modifications can affect tire fitment on a 1955 Ford Thunderbird even when the car still uses a 15-inch wheel. Wheel-width changes, aftermarket wheels, suspension alterations, or body adjustments can all influence whether 670-15, 710-15, or a radial equivalent remains appropriate. Shared rim diameter does not erase the need to verify the actual setup on the car.

A Thunderbird with changed wheels or altered ride height should be checked for steering clearance, fender clearance, and general tire-to-body space before a replacement is chosen. That is especially important when moving between bias-ply and radial formats. Verifying what is physically on the car today is more reliable than assuming it still matches an earlier restoration or past owner’s choices.

Before driving a 1955 Ford Thunderbird on new tires, inspect the wheels, confirm the tire size and rim diameter, and make sure each tire is seated and inflated properly for its application. It is also smart to check for clearance at full steering lock and around the fender openings. On an older car, the surrounding hardware matters almost as much as the tire itself.

A road-ready inspection should also include wheel fastener condition, basic suspension condition, and any signs that the car has unusual alignment or ride-height issues. After the first miles, recheck pressure and look for rubbing, uneven contact, or any unusual behavior. Collector cars often spend long periods parked, so a short, careful shakedown is a better first step than an immediate long drive.

Collector-car tires on a 1955 Ford Thunderbird should be maintained with regular pressure checks, periodic visual inspection, and attention to age-related deterioration as much as tread wear. Whether the car uses 670-15 or 710-15, look closely for cracking, bulges, cuts, and signs of slow air loss. A Thunderbird that is driven infrequently can age its tires long before it wears them out.

Storage conditions also matter. Keeping the car away from prolonged sun, excess heat, moisture, and ozone sources helps preserve the sidewalls and overall casing. It is also wise to inspect the tires before each driving season and before longer outings, since long parked periods can hide developing issues. A collector car benefits from consistent inspection more than from mileage-based maintenance alone.