1957 Ford Mark III Tires

The 1957 Ford Mark III uses two primary tire sizes: 640-13 and 650-13. Both are bias-ply sizes built for 13-inch wheels, so the main difference is the nominal section width represented by the first part of the size code.

Choosing between them starts with confirming the exact sub-model and the wheels currently on the car. Since both sizes share the same rim diameter, the next practical step is checking wheel width, overall appearance goals, and whether the car remains on a period-style bias-ply setup or is being evaluated for a radial equivalent.

The tire fitments associated with the 1957 Ford Mark III use a 13-inch rim diameter. That applies to both 640-13 and 650-13, so wheel diameter stays consistent even though the car can use more than one primary tire size.

Rim diameter is only part of the fitment picture on a vintage car. It also helps to confirm wheel width before selecting a tire, since the available products and radial-equivalent options are tied to specific width ranges that can affect sidewall shape, clearance, and the overall look of the car.

Both are vintage numeric bias-ply tire sizes. In this format, the first number is the nominal section width in inches with the decimal omitted, so 640 means about 6.40 inches and 650 means about 6.50 inches, while 13 is the wheel diameter.

That sizing system differs from modern metric radial sizes, which is why the code can look unfamiliar today. Understanding the format helps when comparing original-style bias-ply tires with radial equivalents, especially if the goal is to preserve period appearance while still confirming the car’s current wheels and overall fitment setup.

The primary tire sizes used on the 1957 Ford Mark III, 640-13 and 650-13, are bias-ply sizes. That means the original fitment style centers on vintage construction rather than a modern radial as the primary specification.

Bias-ply construction is often chosen to maintain a traditional stance and period-style appearance. Owners considering a move to radials should treat that as a conversion decision rather than simply another version of the same tire, and should verify wheel width, overall dimensions, and vehicle clearance before making the change.

Radial equivalents for both 640-13 and 650-13 include 175R13, P175/75R13, P185/70R13, and 650R13. The first is an 80-series metric radial, the next two are 75-series and 70-series P-metric radials, and 650R13 is the bias-look radial option.

Those alternatives give the 1957 Ford Mark III owner several ways to move from a vintage numeric bias-ply size into radial sizing. Even when the rim diameter matches, the choice still deserves a check of wheel width, section shape, and clearance around steering and suspension before treating any equivalent as a workable alternative.

A bias-look radial is available in the equivalent size 650R13 for the 1957 Ford Mark III. It serves as a radial alternative for both primary bias-ply sizes while aiming to retain a more traditional visual presentation than a purely modern-looking radial format.

That makes it a useful middle ground for owners who want a vintage appearance without staying strictly with bias-ply construction. The decision still calls for careful checking of wheel width, overall fit on the car, and the way the tire sits within the fender and suspension space before putting the vehicle into regular road use.

Start with the correct primary size for the car, since the 1957 Ford Mark III can use either 640-13 or 650-13 depending on its setup. Both are 13-inch bias-ply sizes, so the next decisions usually involve construction preference, sidewall appearance, and the wheel-width range that matches the tire.

A restoration-oriented owner may focus on maintaining a period-style bias-ply look, while a driver planning more road miles may compare the available radial equivalents. Brand, whitewall width, and how the tire complements the car’s trim and stance can all matter once the basic fitment has been confirmed.

The available sidewall styles for the 1957 Ford Mark III center on whitewall variations. In these sizes, the product range includes wide whitewall and narrow whitewall treatments, depending on the tire size, brand, and series being considered.

That choice affects the car’s visual character as much as the mechanical fitment. A wider whitewall can lean more formal and mid-century in appearance, while a narrower whitewall gives a subtler period-style look, so the right selection often comes down to the trim presentation and restoration theme the owner wants to maintain.

Tires for the 1957 Ford Mark III are available from BFGoodrich, Coker Classic, and US Royal within the applicable 640-13 and 650-13 bias-ply sizes. Those brands appear across classic bias-ply offerings with different whitewall treatments and tire series names.

Brand comparison is most useful after the correct tire size has been confirmed. From there, the real differences are usually visual and fitment-related, such as sidewall style, series presentation, and rim-width compatibility, rather than assuming one brand is automatically the right answer for every Mark III owner.

A period-style 1957 Ford Mark III is best approached from its primary bias-ply fitment, using either 640-13 or 650-13 as appropriate for the car. That keeps the sizing format and construction aligned with the kind of tire presentation buyers expect to see on a late-1950s British Ford.

From there, the appearance decision usually comes down to whitewall width and overall visual balance. Owners pursuing exact originality should compare their car against marque references, period photography, or build-specific documentation, while others may simply choose the bias-ply size and sidewall treatment that best supports a restoration-oriented look.

Tire construction has a visible effect on how a restored 1957 Ford Mark III presents itself. A bias-ply tire preserves the vintage sizing format and traditional sidewall character associated with the car’s era, while a modern radial equivalent usually gives the car a more updated visual impression.

That difference matters even before the car moves, especially on a vehicle where whitewall styling is part of the overall design statement. Owners who prioritize period presence often stay with bias-ply or consider a bias-look radial, while those favoring road use may weigh that appearance change against the practicality of radial construction.

Yes, modifications can affect tire fitment on a 1957 Ford Mark III even when the car uses the correct basic size family. Wheel width changes, aftermarket wheels, suspension alterations, or body and ride-height changes can all influence how a 640-13, 650-13, or radial equivalent sits on the car.

That is especially important when moving away from the original-style bias-ply setup. A car with changed wheels or altered suspension should be checked for steering clearance, fender space, and tire-to-body contact through full travel, rather than assuming a size that works on one Mark III will behave the same on another.

Before driving a 1957 Ford Mark III on new tires, inspect the wheels, valve stems, and overall mounting condition, then confirm inflation pressure and look for any signs of rubbing once the car is on the ground. It is also smart to check steering travel and visual clearance at the fenders and suspension.

A collector car deserves a broader road-readiness check as well. Brake condition, alignment, suspension wear, and wheel hardware can all influence how new tires behave, so a careful once-over helps the car track properly and reduces the chance of blaming the tires for issues coming from the rest of the chassis.

Tires on a collector 1957 Ford Mark III should be maintained with regular pressure checks, visual inspections, and attention to age even if the tread still looks usable. Sidewall cracking, flat spotting, bulges, cuts, and slow air loss deserve prompt attention on a car that may spend long periods parked.

Storage conditions matter almost as much as mileage on a vintage vehicle. Keeping the car away from prolonged sunlight, heat, moisture, and ozone sources helps preserve the rubber, while moving the car periodically and inspecting the tires before each outing makes it easier to catch condition issues before they affect road use.