1949 Studebaker Tire Fitment Guide

1949 Studebaker vehicles use two different tire sizes depending on model. The Champion uses 640-15, while the Commander uses 6.50-15. Both are bias-ply sizes that mount on 15-inch rims. For the 640-15 Champion fitment, available tires are built for 15-inch wheels with rim width ranges spanning 4.00 to 5.00 inches, depending on the specific product selected.

That means year and make alone are not enough to choose correctly for a 1949 Studebaker. You need to identify whether the car is a Champion or a Commander first, then confirm the wheel dimensions against the tire you want to run. If you are working with original wheels, verify the wheel width before final selection, especially when comparing whitewall options from different brands within the Champion size.

On a 1949 Studebaker, 640-15 is a traditional numeric bias-ply tire size. The 6.40 figure refers to the nominal section width, and the 15 refers to the wheel diameter in inches. It is not a modern metric radial code, so it should be read as an older American sizing convention used during the postwar era. For 1949 Studebaker fitment, this size applies to the Champion.

That older numeric format matters because you should compare it to other vintage bias-ply sizes, not to modern P-metric or Euro-metric equivalents by name alone. If your goal is to keep the Champion visually and mechanically in character, staying within the proper numeric size family is the right place to start. After that, the meaningful choices become brand, whitewall width, and wheel-width compatibility.

No, 1949 Studebaker models do not all use the same tire size. The Champion uses 640-15, while the Commander uses 6.50-15. Both sizes are bias-ply and both fit 15-inch wheels, but they are not interchangeable as a year-wide, one-size-fits-all recommendation. Studebaker separated the fitments by model within the 1949 range.

That distinction is especially important when a car has changed hands several times or has mixed parts from earlier restoration work. A buyer or owner should confirm the actual model designation and inspect the wheels already on the car before choosing replacement tires. On a postwar Studebaker, getting the model right first prevents you from chasing the wrong size simply because both cars share a 15-inch rim diameter.

1949 Studebaker tires are available with more than one sidewall treatment in the 640-15 Champion size. Wide whitewall options are offered by BFGoodrich and Firestone, while Firestone also offers a narrow whitewall version in the same size. Those choices fit comfortably within the look of the late 1940s, when whitewall presentation was a major part of a car’s overall appearance.

The practical choice comes down to the visual character you want the car to project. A wider whitewall usually gives a more formal, upscale postwar look, while a narrower whitewall can feel a bit more restrained. If you are trying to match an existing restoration theme, period photos, or judging expectations, choose the sidewall style first and then narrow the field by brand and wheel-width compatibility.

BFGoodrich and Firestone both offer tires for 1949 Studebaker applications in the available product range here. In 640-15 for the Champion, BFGoodrich appears in the Silvertown Classic Bias Ply line, while Firestone appears in the Firestone Classic Bias Ply line. Both names are deeply tied to mid-century American motoring, which makes them natural fits for a late-1940s domestic car.

Brand choice on a collector Studebaker often comes down to the appearance you want and the exact sidewall treatment available in your size. Some owners prioritize a particular whitewall width or sidewall branding to suit the car’s restoration theme. Others simply want a reputable vintage-style bias-ply tire that keeps the car visually consistent with its era and driving character.

Within the 1949 Studebaker Champion size of 640-15, Firestone and BFGoodrich share several fundamentals: both are bias-ply tires for 15-inch wheels and both list a 1190-pound maximum load at 32 psi in the wide whitewall versions shown here. The main differences are sidewall presentation and rim-width range. The BFGoodrich 3.00-inch whitewall is listed for 4.00 to 4.50-inch rims, while Firestone’s wide and narrow whitewall versions are listed for 4.50 to 5.00-inch rims.

That makes wheel width and styling preference the two real separators. If your Champion has narrower original wheels, the BFGoodrich fitment window may be the more natural place to look. If your wheels fall in the broader Firestone range and you are choosing among wide or narrow whitewall looks, Firestone gives you more visual variation within the same vintage size.

1949 Studebaker tires use 15-inch rims, and the available 640-15 Champion products show more than one approved rim-width range. The BFGoodrich 640-15 wide whitewall is listed for 4.00 to 4.50-inch rims, while the Firestone 640-15 options are listed for 4.50 to 5.00-inch rims. That means rim width is product-specific even within the same nominal tire size.

A tire that fits the correct diameter wheel can still be a poor match if the wheel width falls outside the intended range. Before settling on a brand or whitewall width for a 1949 Studebaker Champion, measure the actual wheel or confirm its specification through restoration records. That step is especially helpful on long-restored cars, where wheels may have been changed at some point in the car’s life.

1949 Studebaker tires in the products shown here are not marked with tube-type or tubeless designations in the size descriptions. These are traditional bias-ply collector tires for late-1940s applications, so tube use should be confirmed against the exact tire and wheel combination rather than assumed from size alone. Wheel design and condition matter just as much as the tire itself on a vintage setup.

The safest approach is to inspect whether your Studebaker still carries original-style rims, how those wheels are sealed, and whether the chosen tire is intended to be run with a tube on that wheel. If the car has older wheels with corrosion, pitting, or questionable valve-stem seats, that setup deserves a closer look before assembly. A marque specialist or experienced vintage tire installer can help you match the tire to the wheel correctly.

Original 1949 Studebaker wheels are not automatically interchangeable across all tire choices simply because both listed sizes use 15-inch rims. The Champion’s 640-15 and the Commander’s 6.50-15 share rim diameter, but they are different model-specific fitments. At least within the Champion size, approved wheel width also changes by product, so the wheel must suit the specific tire selected.

That means the original wheel can often remain part of the setup, but only after the actual model and wheel width are confirmed. A 15-inch diameter match is only the first checkpoint. If the car has replacement wheels, mixed wheels, or a long restoration history, compare each wheel against the intended tire’s approved range before mounting rather than assuming any 1949 Studebaker wheel will work with any listed size.

A 1949 Studebaker should be stored in a cool, dry space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment that can accelerate rubber aging. Bias-ply tires are especially prone to flat-spotting if the car sits in one position for long periods. Clean floors, stable temperatures, and protection from standing moisture all help preserve both the tires and the wheels.

For a car that is parked for months at a time, slightly increasing attention to tire care pays off. Rolling the car periodically can help reduce temporary flat spots, and some owners use stands or cradles to reduce constant load on the carcass during extended storage. The goal is not just cosmetic preservation but keeping the tire round, supple, and ready for gentle use when the car returns to the road.

Tires on a 1949 Studebaker usually age out before they wear out, especially on collector cars that see limited annual mileage. A sensible rule is to begin evaluating them closely once they reach the five- to seven-year range and to treat around ten years as a serious replacement point regardless of remaining tread. The DOT date code on the tire is the most reliable way to track actual age.

That matters because a handsome bias-ply tire can still be too old for confident road use even if the car has only been driven to shows and local events. Sidewall condition, flexibility, and any history of air loss should weigh into the decision along with age. On a rarely used Studebaker, calendar age is the better guide than miles traveled when deciding whether to keep or replace a set.

Tires on a 1949 Studebaker should be inspected before every drive and again before any extended outing. Look closely for sidewall cracking, cuts, bulges, irregular tread wear, and signs that the tire is losing pressure between uses. Because a late-1940s collector car may spend long periods parked, age-related issues often appear before obvious tread wear does.

A more thorough inspection at the start of every driving season is also wise. Check valve stems, inspect the spare, and pay attention to any change in steering feel or vibration once the car is moving. Early detection matters on an older car because tire issues can combine with aged suspension, steering, and braking components, making a small problem feel much larger once the Studebaker is out on the road.

A 1949 Studebaker Champion would have been fitted with bias-ply tires in period, and the listed size for the Champion is 640-15. That aligns with normal late-1940s American passenger-car practice, when bias-ply construction was standard equipment. Original-market details could still vary by body style, regional delivery, or later replacement history, so exact restoration verification sometimes reaches beyond the tire itself.

For most restorations, the important point is to stay with the correct Champion size and a period-appropriate bias-ply construction. Sidewall treatment then becomes part of the authenticity conversation, especially if the car is being prepared for judged competition or a historically themed restoration. If you want to match a specific factory presentation, period photos, build records, and Studebaker marque clubs are the best final references.

Correct tire fitment absolutely matters when showing a 1949 Studebaker, especially in classes that emphasize factory appearance and era accuracy. Judges and knowledgeable enthusiasts often notice whether the size matches the model, whether the construction type suits the period, and whether the sidewall style looks appropriate for a late-1940s American car. A Champion wearing the wrong model size can stand out just as quickly as an obviously modern-looking tire.

That does not mean every event applies identical standards, but tire details are part of the visual language of a well-restored postwar Studebaker. If the goal is concours-level presentation, confirm the exact model first and then choose the tire with an eye toward proper size, construction, and whitewall character. Marque clubs and event rulebooks can help settle fine points that go beyond basic fitment.

On a 1949 Studebaker, the difference between wide whitewall and narrow whitewall tires is primarily visual rather than dimensional within the same listed size. In 640-15 for the Champion, wide whitewall and narrow whitewall versions are both available, letting owners tune the car’s look while staying within a traditional bias-ply format. A wider whitewall generally creates a fuller, dressier late-1940s appearance.

That choice can influence how the whole car reads, especially on a streamlined postwar design like a 1949 Studebaker. Owners aiming for a more formal or upscale presentation often gravitate toward wider whites, while a narrower band can feel more restrained. If the car is being judged, compare the chosen look against period photographs, restoration references, and club guidance rather than choosing strictly by modern taste.

1949 Studebaker tires in these applications are traditional bias-ply designs, which can be used on the road when they are in good condition, correctly fitted, and properly inflated. Bias-ply tires typically deliver a more period-correct driving feel than a modern radial, with different tracking and response characteristics that owners of vintage American cars generally expect. Highway use is less about chasing high-speed capability and more about the overall condition of the tire and the car.

On a late-1940s Studebaker, the vehicle’s brakes, steering, suspension, and alignment are often as important to safe road use as the tire itself. Before regular highway driving, make sure the full chassis and wheel system are sorted, not just the rubber. A well-maintained bias-ply setup can be enjoyable on modern roads, but it rewards realistic speeds and a driver who understands the behavior of a true postwar car.

For 1949 Studebaker Champion products in 640-15, the listed maximum load figures include 1190 pounds at 32 psi for several wide whitewall tires and 970 pounds at 32 psi for one narrow whitewall Firestone option. Those are tire ratings, not a blanket vehicle recommendation for every 1949 Studebaker application. Inflation for actual use should be guided by the vehicle’s factory recommendation and the chosen tire’s own specifications.

The practical approach is to start with the owner’s manual or restoration literature for the car, then confirm that the tire you selected is being used within its rated limits. Do not transfer one pressure figure from the Champion size to the Commander size or from one product to another just because the wheel diameter matches. Pressure tuning on a collector car should stay grounded in the specific tire and specific model.

Before taking a 1949 Studebaker on a longer drive, inspect each tire for cracking, cuts, bulges, uneven wear, and any sign of slow air loss. Confirm pressures when the tires are cold, and do not forget the spare. On an older car, the tires are only one part of the readiness check, but they are among the first areas to inspect because age can affect them even when mileage is low.

A longer outing is also the right time to look at the rest of the car with the same level of care. Wheel fasteners, brake function, steering play, suspension condition, and bearing noise all deserve attention on a postwar Studebaker. If the car has been sitting, take a short local drive first and recheck the tires afterward so any vibration, pressure change, or heat-related issue appears before you are far from home.