1951 Nash Statesman Tires

The 1951 Nash Statesman uses a 640-15 tire size. This is a numeric bias-ply size mounted on a 15-inch rim, and it is the primary fitment used for the Statesman covered here, including the 6 Cyl. sub-model.

That means the main job is not sorting through multiple original sizes, but making sure the car still has the correct wheel diameter and a wheel width that suits the tire being considered. On a restored or long-owned car, it is smart to confirm the actual wheel setup before choosing between blackwall, whitewall, or a radial-equivalent alternative.

The 1951 Nash Statesman uses a 15-inch rim with its primary 640-15 tire fitment. The tire size itself confirms the wheel diameter, and the available bias-ply tires in this size are built for that 15-inch application.

Rim diameter is only part of the fitment picture, though. Wheel width also matters, especially when comparing different tire brands or considering one of the radial-equivalent sizes. If the car has replacement wheels, old service wheels, or a previous restoration, measuring the actual wheel before ordering helps avoid clearance and compatibility surprises.

On the 1951 Nash Statesman, 640-15 is a vintage numeric bias-ply size. The 640 refers to a nominal section width of roughly 6.40 inches, while the 15 identifies the rim diameter in inches.

That older sizing format is different from modern metric radial sizes, so it helps to read it as a period tire code rather than a direct modern measurement system. Once the size is understood, the next step is choosing the right style within it, such as blackwall or whitewall, or comparing one of the radial-equivalent sizes while checking wheel width and overall fitment carefully.

For the 1951 Nash Statesman, 640-15 is the primary bias-ply tire size. The available tires in this fitment are bias-ply products, which aligns with the car's period sizing and traditional road-going presentation.

Keeping a bias-ply tire preserves the vintage construction style and the classic look associated with early 1950s fitment. Owners thinking about a different driving feel can compare radial-equivalent sizes, but that is a separate decision from the original-style fitment and should include checks for wheel width, overall dimensions, and clearance on the specific car.

Radial equivalents for 640-15 include 175R15, P175/75R15, and P185/70R15. These represent an 80-series metric radial, a P-metric 75-series radial, and a P-metric 70-series radial, giving the 1951 Nash Statesman owner several modern-format comparison points.

Those sizes should be treated as alternatives rather than automatic substitutes. The associated recommended rim-width range is 5 to 6 inches, and the wheel on the car should be checked along with clearance at the fenders and steering components. That is especially important on an older vehicle that may have seen wheel changes or suspension work during its life.

Start by confirming which radial-equivalent size is being considered for the 1951 Nash Statesman, then check wheel diameter, actual wheel width, and the tire's overall suitability for the car's setup. For the 640-15 fitment, the radial-equivalent family includes 175R15, P175/75R15, and P185/70R15.

A conversion also calls for a careful look at steering clearance, fender clearance, suspension condition, and the car's intended use. An older car that still has stock-type wheels may differ from one with later replacements, and small fitment differences matter. It is also wise to inspect alignment and general chassis condition so the tire change is evaluated as part of the whole setup.

Choosing a 640-15 tire for a 1951 Nash Statesman starts with keeping the correct size and 15-inch rim fitment in place. From there, the real differences are construction style, sidewall treatment, tire series, rim-width compatibility, and product specifications such as load figures and weight.

A car being restored for a strong period look may lead toward a bias-ply tire with the right blackwall or whitewall presentation, while a road-driven car may prompt a closer look at radial equivalents. It also helps to confirm how original the wheel setup still is, because a tire that is right in size still needs to suit the actual wheel on the car.

The 1951 Nash Statesman has 640-15 tire options in blackwall, narrow whitewall, and wide whitewall styles. That gives owners a useful spread of visual choices within the correct vintage-size fitment, from a simple dark sidewall to a more formal whitewall presentation.

Sidewall style is mostly an appearance decision, but it can strongly affect how the finished car reads visually. A blackwall often suits a more understated look, while whitewall treatments can emphasize a fuller early-1950s character. The best choice depends on the restoration direction, wheel covers, and whether the car is being preserved as a period-style cruiser or a more restrained driver.

Tires for the 1951 Nash Statesman in the 640-15 size are available from BFGoodrich, Firestone, Avon, and Excelsior. The available series include Silvertown Classic Bias Ply, Firestone Classic Bias Ply, Super Safety Crossply, and Excelsior Bias Ply.

That variety gives the buyer room to compare visual style and specification details without moving away from the correct size category. Some choices focus on whitewall presentation, while others keep a plain blackwall look. Comparing rim-width guidance, load figures where stated, and the overall appearance of the tire helps narrow the field to the option that best suits the car.

For a period-style 1951 Nash Statesman, the starting point is the original-size 640-15 bias-ply fitment. Staying with that construction and size preserves the vintage sizing language of the car and keeps the tire choice aligned with an early-1950s restoration-oriented presentation.

From there, the decision usually comes down to how formal or restrained the finished car should look. Blackwall, narrow whitewall, and wide whitewall versions are all available in this size, and each changes the car's visual character. When exact originality matters, vehicle-specific historical references and marque knowledge are still worth consulting before settling on a final sidewall treatment.

Tire construction changes more than ride and handling on a restored 1951 Nash Statesman; it also affects the car's overall visual impression. A 640-15 bias-ply tire keeps the traditional vintage profile and appearance associated with the period, which is often important on a postwar sedan.

A radial equivalent can be considered if the car is meant for more frequent road use, but it may not present the same visual character as a bias-ply tire. That is why restoration-minded owners often start by deciding whether appearance or modern-format alternative sizing is the priority, then compare wheel compatibility and clearances before making the final choice.

Yes, modifications can affect tire fitment on a 1951 Nash Statesman even when the intended tire size is still 640-15 or one of its radial equivalents. Changes to wheels, suspension height, steering components, or body clearances can alter how much room the tire has in actual use.

That is why a modified car should be checked as it sits, not assumed to match original clearance conditions. Wheel diameter and width are the first measurements to confirm, followed by clearance through turns and suspension movement. Even small changes in stance or wheel choice can matter on an older car with tightly defined vintage fitment.

Before driving a 1951 Nash Statesman on new tires, inspect the wheels for damage or corrosion, confirm the wheel size, and make sure the tires are seated and inflated correctly. It is also smart to check lug hardware, valve stems, and basic alignment condition before the car goes back into regular motion.

The rest of the inspection should focus on age-related issues common to collector cars. Look over steering and suspension components, verify there is no rubbing at full lock, and watch for signs of uneven wear after the first short drive. A car that has sat for long periods benefits from a gradual return to road use rather than an immediate longer trip.

640-15 tires on a collector 1951 Nash Statesman should be maintained with regular pressure checks, visual inspections, and careful storage habits. Even when tread wear is low, collector-car tires still need monitoring for cracking, cuts, bulges, irregular wear, or air loss caused by age and long periods of inactivity.

Storage conditions matter almost as much as mileage on a low-use car. Keeping the Statesman away from prolonged sunlight, excess heat, damp conditions, and ozone sources helps protect the rubber over time. It also helps to move the car periodically or drive it gently at intervals so the tires are not left sitting in one position for too long.