1950 Nash Statesman Tires

The 1950 Nash Statesman uses a 640-15 tire size. That is a numeric bias-ply fitment used on a 15-inch rim, and the covered Statesman 6 Cyl. sub-model uses the same primary size.

For most owners, the size question is straightforward and the real choice comes afterward. Once 640-15 is confirmed on the car, compare sidewall style, brand, tire series, and whether the car still has wheels that match the intended tire's rim-width requirements. If the Nash has been modified over the years, checking the actual wheel setup before ordering is still important.

The 1950 Nash Statesman uses a 15-inch rim with its primary 640-15 tire fitment. That 15-inch wheel diameter is the key measurement that must match before any bias-ply tire or radial equivalent is considered.

Rim diameter is only part of the fitment picture, especially on an older car that may have had wheel changes during its life. It also helps to confirm wheel width, because available 640-15 products and the radial-equivalent range do not all target exactly the same rim-width window. A quick wheel check avoids choosing a tire that suits the diameter but not the wheel itself.

On a 1950 Nash Statesman, 640-15 is a numeric bias-ply tire size. The 6.40 portion refers to the tire's nominal section width in inches, while the 15 identifies the wheel diameter in inches.

That sizing format is typical of many mid-century American vehicles and reads differently from later metric radial sizes. Understanding the code helps when comparing replacement options, because a 640-15 bias-ply remains the primary fitment while 175R15, P175/75R15, and P185/70R15 are radial equivalents in different sizing systems. The buyer's next step is deciding whether period-style construction or radial conversion better matches the car's use.

For the 1950 Nash Statesman, 640-15 is a bias-ply tire size. The available primary fitment choices in this size are bias-ply constructions, which suit the car's original-era sizing convention and traditional appearance.

That matters because a buyer is not simply comparing different brands in a modern radial category. Choosing a 640-15 bias-ply keeps the car in its period construction, while a radial choice means moving to an equivalent size rather than staying in the primary fitment. Wheel width, clearance, and the kind of driving the Nash will actually see should all be part of that decision.

Radial equivalents for 640-15 include 175R15 as an 80-series metric radial, P175/75R15 as a P-metric 75-series radial, and P185/70R15 as a P-metric 70-series radial. All three keep the 15-inch wheel diameter while offering different radial sizing conventions.

Those sizes are comparison points for owners considering a radial alternative, not automatic substitutes in every situation. A recommended rim-width range of 5-6 inches is associated with the radial equivalents, and actual wheel width, tire dimensions, steering clearance, and body clearance should be checked before a conversion. That is especially important on collector cars that may no longer wear their original wheels.

Start by confirming that the wheel diameter is still 15 inches and that the wheel width suits the radial size being considered. For a 640-15 replacement path, the radial-equivalent range includes 175R15, P175/75R15, and P185/70R15, with a 5-6 inch rim-width range associated with those alternatives.

The next checks are practical vehicle-fitment items. Compare the actual wheel setup on the car, inspect front and rear clearance through steering travel and suspension movement, and make sure the chosen tire suits the car's intended road use. A radial can be a useful alternative, but the Nash should be evaluated as it sits rather than assuming every equivalent size behaves the same on every wheel.

Start with the correct primary size, which is 640-15, and make sure the tire matches the car's 15-inch wheel setup. From there, the main variables are bias-ply series, sidewall style, brand, and the rim-width specifications attached to the specific product being considered.

The right choice depends on how the Nash will be used and how it should look. A blackwall gives a more understated presentation, while narrow or wide whitewalls shift the visual character considerably. It also helps to compare product load figures and wheel-width compatibility rather than focusing only on appearance, especially if the car will see more than occasional short drives.

The 1950 Nash Statesman has 640-15 tire options in blackwall, narrow whitewall, and wide whitewall styles. That gives owners a useful range of visual choices while staying within the correct primary tire size.

Sidewall treatment has a strong effect on how a postwar sedan presents, so the best choice depends on the look being pursued. A blackwall usually feels more restrained and functional, while whitewall options create a more dressed, restoration-oriented appearance. Since multiple whitewall widths are available, the buyer can fine-tune the visual balance without changing the basic fitment size.

Tires for the 1950 Nash Statesman are available from BFGoodrich, Firestone, Avon, and Excelsior in the 640-15 size. The available series include Silvertown Classic Bias Ply, Firestone Classic Bias Ply, Super Safety Crossply, and Excelsior Bias Ply.

Brand choice is best treated as one part of a broader comparison rather than the whole decision. It makes sense to look at the sidewall style offered by each brand, the tire series presentation, the stated rim-width range where available, and details such as load capacity and product weight. That approach helps match the tire to the car's appearance goals and actual road use.

A period-style starting point for a 1950 Nash Statesman is the original-format 640-15 bias-ply tire. Staying with the primary size and traditional construction preserves the visual proportions and sidewall character most owners expect from a postwar Nash.

The final appearance depends heavily on sidewall treatment. Blackwall, narrow whitewall, and wide whitewall versions are all available, so the car can be tailored toward a simpler road-going look or a more dressed restoration presentation. When exact originality matters, vehicle-specific historical references and marque guidance are the right way to narrow whitewall width and brand-era details.

Correct tire fitment matters on a 1950 Nash Statesman because the tire's size, construction, and sidewall style all influence the car's stance and overall presentation. Using the proper 640-15 size keeps the restoration anchored to the vehicle's period sizing format.

Fitment also affects the way the finished car reads to enthusiasts, even before it moves. A tire that departs too far in profile or visual style can change the Nash's character more than many owners expect. That is why restoration-minded buyers usually start with the correct primary size first, then choose among blackwall or whitewall options based on the look they want to preserve.

Yes, modifications can affect tire fitment on a 1950 Nash Statesman. Even though the primary size is 640-15 on a 15-inch rim, aftermarket wheels, suspension changes, altered ride height, or body repairs can change the clearance and wheel-width conditions the tire must work with.

That is especially important on older cars, because many have been updated over the decades without obvious visual clues. A quick check of actual wheel diameter, wheel width, and turning clearance can prevent problems before a new set goes on. Any owner considering a radial equivalent should be even more careful about verifying the wheel and vehicle setup as it sits today.

Before driving a 1950 Nash Statesman on new tires, inspect wheel condition, lug hardware, valve stems, and basic suspension and steering condition. It also makes sense to confirm proper inflation, look for any visible interference at full steering lock, and make sure the tires are seated and centered correctly on the wheels.

A collector car benefits from a broader walkaround before road use. Check for fluid leaks that could reach the tires, verify that the brakes are functioning evenly, and recheck air pressure after the first short drive. Older vehicles that have spent long periods parked should also be watched for signs of rubbing or settling once they return to regular movement.

640-15 tires on a collector 1950 Nash Statesman should be maintained with regular pressure checks, periodic visual inspections, and attention to age-related condition. Look for cracking, cuts, bulges, uneven tread wear, or slow air loss, especially if the car is driven infrequently or stored for long periods.

Storage habits matter almost as much as mileage on a collector vehicle. Keeping the Nash away from prolonged sunlight, heat, moisture, and ozone sources helps protect the tire casing and sidewalls over time. It also helps to move the car occasionally and inspect the tires before each outing, because low annual mileage can hide deterioration that is not obvious at a glance.