1937 Oldsmobile 115C Tires

The 1937 Oldsmobile 115C uses a 650-16 tire size. That is a vintage numeric bias-ply size mounted on a 16-inch rim, and the covered 6 Cyl. sub-model uses the same primary fitment.

Once the size is confirmed, the next step is choosing the type of 650-16 tire that suits the car. Blackwall and wide whitewall versions are both available, along with several classic bias-ply series. It is also worth checking that the car still has its proper wheel diameter and a suitable rim width before installing new tires, especially if the wheels have been changed during an older restoration.

The primary tire fitment for the 1937 Oldsmobile 115C is built around a 16-inch rim. That rim diameter matches the 650-16 tire size used on the car, so wheel diameter needs to stay at 16 inches for this fitment.

Rim diameter is only part of the check on a prewar vehicle. Many 650-16 products are intended for rim widths around 4.50 to 5.00 inches, while some versions differ slightly, so actual wheel width still matters. Measuring the wheel before mounting tires helps avoid selecting a tire that looks right on paper but is mismatched to the wheel currently on the car.

On a 1937 Oldsmobile 115C, 650-16 is a vintage numeric bias-ply size. The 6.50 refers to the tire’s nominal section width in inches, and the 16 refers to the wheel diameter in inches.

That older sizing format is different from modern metric radial markings, so it helps to read it in period terms rather than compare it loosely to a newer passenger-car size. For this Oldsmobile, the practical takeaway is simple: stay with a true 650-16 bias-ply fitment, then narrow your choice by sidewall appearance, brand, tread style, and whether the wheel dimensions on the car still match the intended setup.

Start with the correct 650-16 size and confirm that the car still uses a 16-inch wheel suited to that fitment. From there, the main differences are bias-ply series, sidewall style, intended appearance, and whether you want a more passenger-car presentation or a more utility-oriented tread pattern.

A restoration-minded sedan often calls for a classic blackwall or wide whitewall, while some 650-16 options lean toward truck or military-style use and have a different visual character. Comparing rim-width guidance, load figures where stated, and tire weight can also help narrow the field. The right choice depends on how the Oldsmobile will be shown, driven, and visually finished.

The available 650-16 tires for a 1937 Oldsmobile 115C include both blackwall and wide whitewall sidewall styles. That gives owners a clear visual choice between a more understated prewar look and a brighter restoration-oriented presentation.

Sidewall style does not change the basic size, but it changes the car’s overall presence quite a bit. A blackwall usually reads more restrained, while a wide whitewall draws more attention to the wheel opening and side profile. Before choosing strictly by appearance, make sure the tire still matches the wheel dimensions and intended use of the car so the look and fitment stay aligned.

A 1937 Oldsmobile 115C in 650-16 is available from BFGoodrich, Coker Classic, Firestone, Garfield, Excelsior, Lester, Goodyear, STA, and Tornel. Those options span several classic bias-ply series along with some more truck-oriented tread patterns in the same size.

Brand choice is best viewed as part of the broader tire-selection process rather than a shortcut to the right answer. The important comparison points are the correct 650-16 fitment, sidewall style, tire series, rim-width compatibility, and how closely the tire’s look matches the Oldsmobile’s restoration direction. Looking at all of those together usually leads to a better decision than choosing by brand name alone.

A period-style 1937 Oldsmobile 115C should begin with the correct 650-16 bias-ply fitment. That keeps the car within the tire size and construction style appropriate to its era, after which the choice shifts to tread presentation, brand, and whether a blackwall or wide whitewall better suits the restoration.

The best visual match depends on how the car is being finished rather than on one universal answer. Some restorations look more restrained with blackwalls, while others call for the added presence of a wide whitewall. When exact originality matters, it is wise to compare against period photos, marque references, or restoration documentation for the specific car before settling on a final appearance.

On a restored 1937 Oldsmobile 115C, tire construction affects more than ride feel. A 650-16 bias-ply tire preserves the visual proportions and traditional sidewall character associated with a prewar car, which is a major part of how the vehicle presents at a glance.

Construction also influences which sidewall and tread styles look most natural on the car. Since the available fitment here is bias-ply, the owner can focus on how blackwall versus wide whitewall changes the car’s personality without stepping outside the primary construction type. Keeping the wheel size and tire profile in harmony with the body lines usually matters as much as the brand on the sidewall.

Yes. Even though the primary fitment is a 650-16 on a 16-inch rim, changes to wheels, suspension height, brake components, or body clearance can alter what actually works on a 1937 Oldsmobile 115C.

An older car may have gone through decades of repairs or upgrades, so it is worth measuring the current wheel diameter and width instead of assuming everything remains stock. Steering clearance at full lock and space around fenders and suspension should also be checked before mounting new tires. That extra inspection is especially important when the car has aftermarket wheels or a long-ago restoration with unknown parts.

Before driving a 1937 Oldsmobile 115C on new tires, inspect the wheels for correct diameter and sound condition, confirm the tires are properly seated, and check inflation, valve stems, and overall clearance. A quick visual review of steering and suspension components is also smart on a prewar car.

Bias-ply tires can reveal problems that old, hardened tires may have been masking, so the first few miles should be treated as a shakedown. Watch for rubbing, unusual pull, vibration, or uneven stance after installation. It also helps to recheck air pressure after the first drive and look over the tread and sidewalls again once the car has settled onto its new tires.

Collector-car 650-16 tires on a 1937 Oldsmobile 115C should be kept clean, properly inflated, and inspected regularly for cracking, cuts, bulges, and air loss. Because these cars are often driven infrequently, tire age and storage conditions can become just as important as visible tread wear.

Long periods of sitting can flatten tires temporarily and can hide problems until the car is back on the road. Keeping the Oldsmobile away from prolonged sunlight, moisture, and ozone sources helps preserve the rubber, and checking the tires before every outing is a good habit. On a low-mileage collector car, condition matters more than simply assuming the tires are fine because they still look unused.