1939 Hupmobile R915 Tires

The 1939 Hupmobile R915 uses a 600-16 tire size. This is a numeric bias-ply size used on a 16-inch rim, and the covered 6 Cyl. sub-model uses that same primary fitment.

That means the main fitment decision is usually not between multiple sizes, but between different 600-16 tire styles and series. It is still worth confirming the actual wheel diameter and wheel width on the car, especially if it has been restored long ago, stored for years, or fitted with replacement wheels at some point in its life.

The 1939 Hupmobile R915 uses a 16-inch rim with its 600-16 tire size. Among available 600-16 products, common rim-width fitments include 4.00 to 4.50 inches, with some options extending to 5.0 inches depending on the tire.

Rim diameter needs to match exactly, but rim width also affects how a vintage tire sits and performs. Measuring the wheel before purchase helps avoid choosing a tire that is technically the right diameter but not a good match for the wheel currently on the car, particularly if the car has seen wheel swaps over the decades.

Yes. The covered 1939 Hupmobile R915 6 Cyl. uses the same 600-16 bias-ply tire size as the core vehicle fitment. There is no alternate primary size shown for that sub-model within this application.

That simplifies shopping because the focus moves from sub-model size differences to the tire itself. A buyer can compare blackwall, wide whitewall, and double-whitewall treatments, along with tire series and wheel-width requirements, without first sorting through multiple original fitment sizes for the 6-cylinder R915.

Start with the correct 600-16 size and confirm that the tire matches the car’s 16-inch wheels. From there, the big considerations are bias-ply construction, the wheel-width range the tire is built around, sidewall appearance, and whether the tire’s load specification suits the way the car will be used.

A prewar sedan can look very different on a blackwall than it does on a wide whitewall or double-whitewall. It also helps to think about whether the car is being restored for show presentation, regular fair-weather driving, or a more utility-oriented setup, since the available 600-16 products include both passenger-style and military or truck-style tread patterns.

The available 600-16 tires for the 1939 Hupmobile R915 include blackwall, wide whitewall, and double-whitewall sidewall styles. Those choices make a noticeable difference in how a prewar car presents, even when the underlying tire size remains the same.

Blackwalls usually give the car a restrained, utilitarian appearance, while wide whitewalls and double-whitewalls create a more formal restoration-oriented look. The right choice depends on the car’s trim, the style period the owner wants to emphasize, and whether the goal is a traditional road car presentation or a more specific historic appearance.

The 1939 Hupmobile R915 has 600-16 tire options from BFGoodrich, Coker Classic, Avon, Firestone, Ford Script, Excelsior, Lester, Goodyear, STA, and Camac. Those brands appear across several bias-ply series and sidewall treatments in this size.

Brand alone should not be the only decision point. It is more useful to compare the tire series, sidewall style, load figure when stated, and wheel-width compatibility, then match those details to the car’s intended use. A formal restoration, a touring car, and a utility-oriented setup may all point toward different 600-16 product choices.

A period-style 1939 Hupmobile R915 should start with the correct 600-16 bias-ply size. From there, the best match depends on the look being pursued, since this size is available in several traditional bias-ply series and in both blackwall and whitewall presentations.

For many prewar restorations, the tire’s visual character matters nearly as much as the size itself because sidewall treatment strongly affects the car’s stance and presence. If exact originality is important, compare the tire choice against marque references, period photos, and restoration documentation so the finished look reflects the way this particular Hupmobile is being interpreted.

On a restored 1939 Hupmobile R915, bias-ply construction helps preserve the traditional prewar look because the 600-16 fitment uses a vintage numeric bias-ply format. The tire’s shape, sidewall presence, and general visual proportion all contribute to how authentic the car appears from the curb.

Appearance is not just about whitewalls versus blackwalls. Tread style, casing profile, and how the tire fills the wheel opening also influence whether the car looks convincingly prewar or merely vintage-inspired. Keeping the proper size and construction format is usually the most important first step before narrowing the choice to a specific sidewall treatment.

Yes. Even though the primary fitment is 600-16 on a 16-inch rim, modifications can change what actually works on the car. Replacement wheels, altered wheel width, brake conversions, suspension work, or body and fender changes can all affect fitment and clearance.

A collector car that has passed through multiple owners may not still be on its original wheel setup. Checking wheel diameter, measuring wheel width, and looking at steering and fender clearance before choosing a tire is a smart step, especially when the car has been restored, modified, or assembled from older parts over time.

Before road use, inspect the wheels, valve stems, lug hardware, and overall condition of the suspension and steering components, then verify that the new 600-16 tires are properly mounted and inflated. It also helps to make sure the car tracks straight and that there is no interference at full steering lock.

On a prewar vehicle, tire condition is only one part of road readiness. Brake performance, wheel-bearing condition, and stored-car issues such as dried seals or long-unused steering parts deserve attention before a longer drive. A careful shakedown run close to home is a sensible way to confirm that the whole setup is working together properly.

Collector-car 600-16 tires should be checked regularly for pressure loss, sidewall cracking, tread wear, cuts, bulges, and any signs of age-related deterioration. Cars that spend long periods parked need inspection even when tread looks fresh, because time and storage conditions matter as much as mileage.

A cool, dry storage environment away from direct sunlight and ozone sources helps preserve vintage tires. Moving the car occasionally, keeping the tires properly inflated, and inspecting them before each driving season can prevent avoidable problems. Maintenance is especially important on a prewar Hupmobile because long idle periods are common and can mask developing tire issues.