The 1938 Oldsmobile 6 Cyl. sits in the heart of the late prewar American touring era, when smooth styling and substantial road manners mattered as much as mechanical durability. For many owners today, tire choice is part of preserving that character while keeping the car ready for careful road use. This Oldsmobile uses a 650-16 bias-ply tire on a 16-inch rim, so the decision is less about multiple fitments and more about selecting the right version of the correct size. Available choices include blackwall and wide whitewall treatments across several vintage-style bias-ply series. That makes appearance, intended use, and wheel compatibility the main points to settle before choosing a set.
Which Tire Size Is Right for The 1938 Oldsmobile 6 Cyl.
The 1938 Oldsmobile 6 Cyl. uses one primary tire size: 650-16. It is a bias-ply fitment on a 16-inch rim, and the covered Base sub-model uses the same size. That means the main decision is choosing the right style within 650-16, including blackwall versus wide whitewall appearance, tire series, and whether the car will be used mainly for restoration display or regular collector driving.
A 650-16 is a vintage numeric bias-ply size in which the 650 indicates an approximate 6.50-inch nominal section width and the 16 identifies the rim diameter in inches. On the 1938 Oldsmobile 6 Cyl., this size preserves the traditional bias-ply construction associated with the car’s era and driving character. Available 650-16 choices include brands such as BFGoodrich, Firestone, Goodyear, Coker Classic, Garfield, Lester, Excelsior, STA, and Tornel, with blackwall and wide whitewall sidewall treatments across several tire series. Choosing within this size comes down to the look you want, the wheel width being used, and whether the car needs a passenger-car presentation or a more specialty tread style.
Sub-model fitment is straightforward for the 1938 Oldsmobile 6 Cyl. The covered Base model uses the same primary tire size, so the key step is confirming that the car still has the correct 16-inch wheel setup before narrowing down sidewall style and tire series.
1
1938 Oldsmobile 6 Cyl. Base
The 1938 Oldsmobile 6 Cyl. Base uses the same 650-16 bias-ply fitment as the core model. For tire selection, that keeps the focus on period-style appearance, wheel-width compatibility, and choosing between blackwall and wide whitewall options rather than sorting through multiple primary sizes.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1938 Oldsmobile 6 Cyl. Tires for Sale
Available 650-16 choices span BFGoodrich, Firestone, Goodyear, Coker Classic, Garfield, Lester, Excelsior, STA, and Tornel. The product grid is useful for comparing blackwall versus wide whitewall styling, classic passenger-car series, and more specialized truck or transport-style bias-ply designs.
Owners of a 1938 Oldsmobile 6 Cyl. usually want clarity on the correct 650-16 fitment, 16-inch rim use, sidewall and brand choices, and what to inspect before putting a prewar car back on the road.
Tire Size & Fitment
What tire size fits a 1938 Oldsmobile 6 Cyl.?
The 1938 Oldsmobile 6 Cyl. uses a 650-16 tire size. That is a vintage numeric bias-ply size mounted on a 16-inch rim, and it is the primary fitment for the covered Base model as well.
Once the size is confirmed, the real choice is which 650-16 version best suits the car. Buyers typically compare sidewall appearance, tire series, and rim-width compatibility, especially if the car has been stored for years or fitted with replacement wheels at some point in its life.
What size rim does a 1938 Oldsmobile 6 Cyl. use?
The primary tire fitment for the 1938 Oldsmobile 6 Cyl. is built around a 16-inch rim. That rim diameter matches the 650-16 tire size used on the vehicle.
Rim diameter is only part of the check. Before selecting a tire, confirm that the wheels on the car are still 16-inch wheels and compare wheel width against the intended tire’s rim-width specification, since collector cars sometimes carry later replacement wheels that change fitment decisions.
Does the 1938 Oldsmobile 6 Cyl. Base use the same tire size?
Yes. The 1938 Oldsmobile 6 Cyl. Base uses the same 650-16 bias-ply tire size as the core fitment. That keeps the sub-model decision simple because there is no alternate primary size to sort through here.
Even with shared fitment, it still helps to inspect the actual wheel setup on the car. A Base model that has seen decades of repairs, wheel swaps, or long-term storage may need closer checking for wheel width, tire age, and clearance before a fresh set of 650-16 tires is chosen.
Choosing the Right Tire
What should I consider when choosing a 650-16 tire for a 1938 Oldsmobile 6 Cyl.?
Start with the correct 650-16 size and the proper 16-inch wheel, then look at the kind of presentation the car needs. Available choices include traditional blackwall and wide whitewall styles, along with several bias-ply series from different brands.
A restoration-focused car may call for a more formal sidewall appearance, while a driver may place more emphasis on wheel compatibility and intended use. It also helps to compare rim-width recommendations and load figures where shown, especially on a prewar car that may not be running its original wheels.
What sidewall styles are available for 1938 Oldsmobile 6 Cyl. tires?
The 1938 Oldsmobile 6 Cyl. has 650-16 tire options in both blackwall and wide whitewall styles. That gives owners a meaningful visual choice while staying within the correct primary size and traditional bias-ply construction.
Blackwall tires usually create a more restrained, utilitarian look, while wide whitewalls bring a more formal prewar appearance to the car. The right choice depends on how the Oldsmobile is being presented, and buyers should still confirm wheel compatibility before choosing a specific tire within the style they prefer.
What brands offer tires for the 1938 Oldsmobile 6 Cyl.?
650-16 tires for the 1938 Oldsmobile 6 Cyl. are available from BFGoodrich, Coker Classic, Firestone, Garfield, Excelsior, Lester, Goodyear, STA, and Tornel. These options span classic passenger-car bias-ply styles as well as some more specialized truck or transport-oriented designs.
Brand choice should be filtered through the tire’s intended look and use rather than name alone. A wide whitewall passenger-car tire creates a different presentation than a blackwall transport or military-style tread, so comparing sidewall treatment, series, and wheel-width suitability is more useful than chasing a brand by itself.
Restoration & Appearance
Which tire should I choose for a period-style 1938 Oldsmobile 6 Cyl.?
A period-style starting point for a 1938 Oldsmobile 6 Cyl. is the correct 650-16 bias-ply size on a 16-inch rim. From there, the choice usually comes down to whether the car looks right with a blackwall or a wide whitewall treatment.
For many prewar restorations, tire appearance has a major effect on the car’s stance and overall character. Buyers pursuing exact historical authenticity should compare the tire choice against marque references, period photos, or restoration records, while owners focused on a faithful roadgoing look can stay centered on the correct size and construction.
Does correct tire fitment matter for a 1938 Oldsmobile 6 Cyl. restoration?
Yes, correct tire fitment matters because the 650-16 size and bias-ply construction influence how a 1938 Oldsmobile 6 Cyl. sits, looks, and presents as a prewar car. Tire shape and sidewall style can noticeably change the finished impression of the vehicle.
A restoration-minded owner should think beyond simple rim diameter and make sure the wheel width and tire style support the intended appearance. Even when several 650-16 tires are available, choosing between blackwall, wide whitewall, and different vintage-style series can make the car feel either more formal, more understated, or more utility-oriented.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1938 Oldsmobile 6 Cyl.?
Yes. A 1938 Oldsmobile 6 Cyl. may still call for a 650-16 tire, but aftermarket wheels, replacement rims, suspension changes, or body work can all affect whether a particular tire setup is appropriate for the car as it sits today.
Checking the actual wheel diameter and width is the first step, followed by a close look at steering and fender clearance. Even small changes in wheel choice can alter the fitment picture on an older vehicle, so the tire should be matched to the car’s current configuration rather than assumed from age alone.
What should I inspect before driving a 1938 Oldsmobile 6 Cyl. on new tires?
Before road use, inspect the wheels for damage or heavy corrosion, confirm the tires are mounted on the correct 16-inch rims, and check inflation, valve condition, and overall installation quality. On a collector car, it also makes sense to inspect suspension and steering components at the same time.
A fresh set of tires cannot compensate for worn chassis parts or poor wheel condition. The car should also be checked for rubbing at full steering lock and during suspension movement, especially if it has sat for years, since dormant collector vehicles often reveal issues only when they return to regular driving.
How should 650-16 tires on a collector 1938 Oldsmobile 6 Cyl. be maintained?
650-16 tires on a collector 1938 Oldsmobile 6 Cyl. should be kept properly inflated, inspected regularly for cracking, bulges, cuts, and uneven wear, and stored away from prolonged heat, sunlight, moisture, and ozone sources. Low annual mileage does not eliminate the need for inspection.
Collector cars often spend more time parked than driven, which makes age and storage conditions especially important. Periodic checks for air loss and sidewall condition help catch problems early, and it is wise to look over the spare and the wheel surfaces too so the entire tire setup is ready when the car goes back on the road.
