1950 Studebaker Tire Fitment Guide

1950 Studebaker vehicles use two different tire sizes depending on model. The Champion uses 640-15 bias-ply tires, while the Commander uses 760-15 bias-ply tires. Both sizes fit 15-inch wheels, but they are not interchangeable as a year-wide Studebaker size because each one is tied to a specific model line. Rim width guidance also differs by size: 640-15 products are shown for 4.00 to 5.00-inch rims depending on the tire, while 760-15 products are shown for 5.50 to 6.00-inch rims on listings where width is given.

That means year and make alone are not enough when choosing tires for a 1950 Studebaker. A Champion owner should stay within the 640-15 range, and a Commander owner should stay within 760-15, then compare the actual tire against the wheel width already on the car. Once the size is confirmed, the next decisions are sidewall appearance and brand preference rather than switching to another size from elsewhere in the 1950 Studebaker lineup.

On a 1950 Studebaker, 640-15 is a numeric bias-ply size. The first number is the tire's nominal section width class in the older numeric system, and the 15 is the wheel diameter in inches. It is not a modern metric size, and it does not encode a separate aspect ratio the way later radial sizes do. Within the 1950 Studebaker range, 640-15 belongs to the Champion rather than the Commander.

That older numbering format matters because a modern buyer can easily mistake it for a direct dimensional formula. For a Champion restoration or traditional driver, the key is matching the exact 640-15 size and then selecting the whitewall treatment that suits the car's appearance. After that, compare the tire's approved rim-width range to the wheel on the car so the finished setup keeps the proper profile and stance.

On a 1950 Studebaker, 760-15 is also a numeric bias-ply size. The 760 identifies the nominal section width class in the period numeric system, and the 15 identifies a 15-inch wheel. Like 640-15, it is an older bias-ply designation rather than a radial or metric code. In the 1950 Studebaker lineup, this size is used on the Commander.

The practical takeaway is that a Commander owner should read 760-15 as a specific original-type size, not as a flexible family of modern equivalents. Once that size is confirmed, the decision shifts to brand and whitewall style, especially if the car is being restored to a particular visual era. Because some 760-15 listings show a 5.50 to 6.00-inch rim-width range, it is worth checking the wheel before settling on a particular tire.

1950 Studebaker tires are available in both wide whitewall and narrow whitewall styles, depending on size and product. The Champion's 640-15 offerings include wide whitewalls from BFGoodrich and Firestone, plus a narrow whitewall Firestone option. The Commander's 760-15 range includes wide whitewalls from BFGoodrich, Coker Classic, and Universal Vintage Tire, along with a narrow whitewall BFGoodrich option. All of them keep the period-correct bias-ply construction used on these cars.

For a buyer, sidewall style is usually the main visual choice once the correct model-specific size is established. Wide whitewalls generally suit a fuller postwar presentation, while a narrow whitewall can give a slightly more restrained look that still fits the era. If the car is being restored for shows or judged events, match the sidewall style to the way the car is being presented and verify expectations with a Studebaker marque source.

Several brands offer tires for 1950 Studebaker vehicles, but the mix changes by size. In 640-15 for the Champion, the available brands are BFGoodrich and Firestone. In 760-15 for the Commander, the available brands are BFGoodrich, Coker Classic, and Universal Vintage Tire. Every listed choice for these 1950 Studebaker applications uses bias-ply construction and a 15-inch rim diameter.

That brand spread gives buyers room to choose the look they want without changing the basic construction type. A Champion owner has a more concentrated selection, while a Commander owner can compare across a broader set of brand names and whitewall treatments. The best approach is to identify the correct size first, then compare the brand offerings within that one size for sidewall styling, rim-width compatibility, and any published load information.

For a 1950 Studebaker Champion, both BFGoodrich and Firestone offer 640-15 bias-ply tires, but the details differ. The BFGoodrich option shown is a 3.00-inch wide whitewall rated at 1190 pounds at 32 psi and approved for 4.00 to 4.50-inch rims. Firestone offers wider selection within the same size, including 2.75-inch and 2.125-inch wide whitewalls rated at 1190 pounds at 32 psi for 4.50 to 5.00-inch rims, plus a 1.00-inch narrow whitewall rated at 970 pounds at 32 psi for 4.50 to 5.00-inch rims.

That means the comparison is not just brand name but also whitewall width, rim-width fit range, and published load rating on the specific tire. A buyer trying to match a certain visual treatment may lean one way, while someone working with a wheel already measured at 4.00 to 4.50 inches or 4.50 to 5.00 inches may find that one product family lines up more cleanly. The safest path is to compare the exact tire, not just the size.

Rim width depends on the tire size and, in some cases, the individual tire within that size. For 1950 Studebaker Champion applications in 640-15, listed approved rim widths run from 4.00 to 4.50 inches on one BFGoodrich tire and 4.50 to 5.00 inches on several Firestone tires. For 1950 Studebaker Commander applications in 760-15, listed approved rim widths are 5.50 to 6.00 inches on products where that specification appears.

That makes wheel measurement worth doing before final selection, especially on a car that may have had wheels swapped during its life. Even within the same 640-15 size, one product may target a slightly narrower wheel than another. Confirming the wheel's actual width lets you choose a tire that will seat correctly and present the right shape, rather than assuming every tire in the same nominal size wants the same rim.

Original 1950 Studebaker wheels can only be used with both tire sizes in the broad sense that both 640-15 and 760-15 are built for 15-inch rims. The important limitation is width. Champion-size 640-15 tires are shown on narrower rim ranges, while Commander-size 760-15 tires are shown on wider rim ranges where published. The shared diameter does not make the two sizes interchangeable across the lineup.

In practice, a 15-inch wheel still has to match the tire's approved width range and the model the tire belongs to. A Champion owner should not assume a Commander-size tire belongs on the car just because the wheel diameter matches, and the reverse is equally true. Measuring the wheel and keeping the tire with the proper model line is the cleanest way to avoid stance, fit, and appearance issues.

A 1950 Studebaker should be stored in a cool, dry, dark space away from direct sunlight, electric motors, welders, furnaces, and other ozone-producing equipment that can age rubber. Bias-ply tires also benefit from being kept on a clean surface and from having the car moved periodically so the same section of casing does not sit under load for months at a time. If the car will be parked long-term, some owners use stands to reduce static load on the tires.

Those steps matter because collector cars often age their tires by time and storage conditions more than by mileage. A Studebaker that only comes out for weekends or shows may still develop flat-spotting, sidewall checking, or cosmetic whitewall deterioration if it sits neglected. Clean storage habits preserve the tires' appearance and help the car feel smoother when it goes back on the road.

Tires on a 1950 Studebaker should be judged by age and condition more than by tread wear. On a collector car, it is wise to begin evaluating tires closely once they reach roughly five to seven years of age and to give serious replacement consideration by around ten years, even if the tread still looks usable. The DOT date code on the tire helps establish age, and visible cracking, deformation, or persistent air loss should move that evaluation forward.

That approach is especially important on an older Studebaker because many cars spend long periods parked and then return to service for club events, tours, or highway trips. A low-mile tire can still be an old tire. Checking age before a touring season begins gives you time to make an informed replacement choice rather than discovering trouble after the car is already back on the road.

Tires on a 1950 Studebaker should be inspected before every drive and more carefully before any extended outing. Look for sidewall cracking, cuts, bulges, uneven wear, tread separation signs, and pressure loss. Since these cars use bias-ply tires, it is also smart to watch for changes in shape after long storage and to inspect the whitewall area for aging or damage that may be less obvious on a casual glance.

A quick pre-drive walkaround catches many issues before they become roadside problems. For a longer trip, add a pressure check when the tires are cold and inspect the spare as well, since an aged or neglected spare may not be roadworthy when needed. Frequent inspection is one of the simplest ways to keep a lightly used Studebaker dependable and to avoid putting unnecessary stress on suspension and steering components.

A 1950 Studebaker Champion would have been fitted in the bias-ply era, and the Champion uses the 640-15 size in the 1950 Studebaker range. That means a modern reproduction bias-ply in 640-15 is the most direct match to the type of construction and sizing convention the car used when new. Sidewall treatment could vary by how the car was ordered and presented, so the exact whitewall width should be matched to the restoration goal rather than assumed from size alone.

For a buyer pursuing authenticity, size and construction come first. Once those are right, the finer points become sidewall appearance and brand preference within the available reproduction options. If the car is being restored to a very specific delivery look or judged standard, Studebaker club literature and marque specialists are the right places to confirm whether a particular whitewall width best suits that individual Champion.

Correct tire fitment matters on a 1950 Studebaker because judging standards often pay attention to size, construction type, and sidewall appearance. On these cars, using the Champion's 640-15 on a Commander or the Commander's 760-15 on a Champion would be an obvious mismatch, and switching away from bias-ply construction can also change the car's visual stance and period character. Whitewall width can be part of that presentation as well.

For show preparation, the best strategy is to match the model-specific size first and then choose the sidewall style that aligns with the way the car is being restored. A broad touring restoration may accept some flexibility, while a concours-minded restoration usually benefits from closer attention to era-correct details. Event rules vary, so Studebaker judging manuals and marque clubs are the proper final check before the car goes on the field.

For the 1950 Studebaker Commander, both BFGoodrich and Coker Classic offer 760-15 bias-ply tires, but their listed details are not identical. The BFGoodrich wide whitewall example shown uses a 3.375-inch whitewall, carries a 1710-pound load rating at 32 psi, fits 5.50 to 6.00-inch rims, and weighs 26 pounds. The Coker Classic wide whitewall example shown uses a 3.00-inch whitewall, carries the same 1710-pound load rating at 32 psi, fits 5.50 to 6.00-inch rims, and weighs 25 pounds.

For an authenticity-minded buyer, that makes the choice partly visual and partly practical. The two tires share the same basic size, construction, rated load figure, and rim-width range, but the whitewall width and listed weight differ. If the goal is a very specific period presentation, compare the sidewall look against period photos or restoration references. If the goal is simply correct Commander sizing in a bias-ply format, either tire stays within the right general lane.

1950 Studebaker tires in the listed sizes are bias-ply reproductions, and no separate speed ratings are shown on the available products here. That does not automatically make them unsuitable for normal road use, but bias-ply behavior is different from later radials, with more road feel, more following of grooves, and a generally more period-correct response. On a 1950 Studebaker, the car's own brakes, suspension, steering condition, and overall mechanical health are just as important to highway confidence as the tires themselves.

The practical takeaway is to treat the tire as one part of the whole vehicle system. A freshly inspected, correctly inflated bias-ply tire on a sound Studebaker can be entirely appropriate for touring within the car's natural comfort zone. Long-distance or higher-speed driving should be approached with the understanding that a 1950 automobile was engineered in a different era, so stability, stopping distance, and steering feel deserve respect.

Published load figures for 1950 Studebaker tires include 640-15 tires rated at 1190 pounds at 32 psi on several products, with one 640-15 narrow whitewall listing at 970 pounds at 32 psi, and 760-15 tires rated at 1710 pounds at 32 psi on some products. Those numbers describe the tire's rated load at a stated pressure, not a blanket instruction to inflate every tire to the same setting on every car. Factory vehicle pressure recommendations should still come from the Studebaker owner's manual or marque literature for the specific model.

Use the vehicle maker's guidance as the starting point and the tire maker's published limits as the boundary, rather than borrowing a pressure figure from another size or another Studebaker model. Champion and Commander cars use different tire sizes for a reason, and the pressure choice should reflect the actual vehicle, load, and tire being used. Checking pressure cold before driving is the best way to keep the car consistent and predictable.

Before a longer drive in a 1950 Studebaker, inspect each tire for sidewall cracking, cuts, bulges, embedded debris, uneven tread wear, and signs of aging around the whitewall area. Confirm cold inflation pressure, verify that the spare is usable, and make sure each wheel and valve area looks sound. Since the Champion and Commander use different sizes, it is also worth confirming that the car is riding on a matched set of the correct model-specific tires rather than a mixed assortment collected over time.

That tire inspection should be part of a wider pre-trip check that includes brakes, steering, cooling, and fluid condition, because an older Studebaker asks every system to work together. A tire problem on a short local cruise is inconvenient; on a longer trip it can interrupt the whole outing. Spending a few extra minutes in the garage is usually the difference between enjoying the drive and chasing preventable issues on the roadside.