1931 Pontiac 6 Cyl. Tires

The 1931 Pontiac 6 Cyl. uses a 500-19 tire in bias-ply construction. For the covered fitment, that is the primary tire size associated with the vehicle and its Base sub-model, so the sizing question is fairly straightforward compared with later vehicles that may have multiple rim diameters or profile options.

The practical step is confirming that the car still has 19-inch wheels and that no later wheel conversion has been made over the years. Once that is settled, the decision shifts to choosing among the available 500-19 tires based on rim-width compatibility, intended use, and the kind of period-style blackwall presentation that suits the Pontiac.

The primary tire fitment for the 1931 Pontiac 6 Cyl. is built around a 19-inch rim. The 500-19 size itself confirms that wheel diameter, and the available products in this size are also designed for 19-inch applications, which keeps the fitment picture consistent for this vehicle.

Wheel diameter is only part of the check on an early car. It is also worth confirming actual wheel width and the condition of the rims before mounting new tires, especially if the car has seen long storage or restoration work. A correct 19-inch diameter does not automatically answer every compatibility question if the wheels have been changed or repaired.

Yes. The 1931 Pontiac 6 Cyl. Base uses the same 500-19 bias-ply tire size as the model core. That means buyers do not need to sort between different primary fitments for the covered sub-model and can stay focused on selecting the right tire within that established vintage size.

Even with shared fitment, an old Pontiac can still have non-original wheels or long-ago mechanical changes that affect tire selection. Checking the actual rim diameter, wheel width, and overall tire clearance remains worthwhile before purchase. That is especially true if the car has been rebuilt for touring, show use, or a more specialized driving purpose.

Start with the correct 500-19 size and bias-ply construction, since that is the primary fitment for the 1931 Pontiac 6 Cyl. After size, the key differences are the tire series, the intended character of the product, the required rim width, and whether the tire's appearance fits a preservation-minded or more specialized build.

A road-driven pre-war Pontiac may call for a different selection than a car built around a more competition-influenced presentation. Compare rim-width requirements carefully, and look at details such as weight and load information when available. Keeping the tire choice aligned with the car's wheel setup and expected use usually matters more than chasing the most aggressive-looking option.

The available 500-19 options for the 1931 Pontiac 6 Cyl. include tires from Excelsior and Firestone. Both are offered in blackwall bias-ply form, but they are represented through different tire series, which gives the buyer more than one path depending on the car's intended use and presentation.

Brand alone should not be the only deciding factor on an early Pontiac. It makes more sense to compare the specific tire series, wheel-width suitability, and the overall look you want on the car. A restoration-oriented driver and a more specialized build may both use 500-19, yet end up choosing different products within that same vintage size.

Two series are available in 500-19 for the 1931 Pontiac 6 Cyl.: Excelsior Comp H and Firestone Dirt Track. Both are bias-ply blackwall tires, but the series names and product attributes point to different selection priorities rather than a single one-size-fits-all choice within the same vintage fitment.

Looking at tire series helps narrow the decision beyond size alone. One buyer may prefer a more traditional period-style presentation, while another may be focused on a performance or racing-oriented application. The best approach is to compare each series against the car's wheel dimensions, planned road use, and the visual character you want the finished Pontiac to carry.

A period-style 1931 Pontiac 6 Cyl. starts with the correct 500-19 bias-ply size, since that preserves the early-1930s fitment format and stance of the car. Blackwall offerings in this size maintain a traditional visual presentation, which is often an important part of how a pre-war Pontiac looks when viewed in profile.

The finer choice depends on how exact the restoration needs to be. If originality is being judged closely, vehicle-specific historical references and marque knowledge are worth consulting before deciding on a particular tire series. For many owners, staying with the correct size, construction type, and an appropriate blackwall appearance is the most important foundation.

Yes, correct tire fitment matters because tire size and construction strongly affect how a 1931 Pontiac 6 Cyl. sits, looks, and feels on the road. A 500-19 bias-ply tire supports the car's pre-war proportions in a way that modern-looking substitutions often do not, even before any driving differences are considered.

Fitment also affects the overall impression of the restoration. Tire diameter, sidewall shape, and wheel compatibility all influence stance and authenticity of appearance. Even when a car is not being restored for formal judging, keeping the Pontiac on the proper vintage size helps preserve the design language of the era and avoids an out-of-place visual result.

Yes. Even though the standard fitment is a 500-19 bias-ply tire, modifications can change what actually works on the car. Wheel substitutions, brake conversions, suspension work, or body and fender changes can all alter clearance and wheel compatibility, especially on a vehicle that has been rebuilt or adapted over many decades.

A buyer should look at the car in its current configuration rather than assuming every surviving Pontiac still matches original wheel and chassis dimensions. Confirm the wheel diameter and width first, then check clearance at full steering lock and normal ride height. That extra verification is especially important before using a tire intended for specialized performance-oriented service.

Before road use, inspect the wheels for damage, rust, poor repairs, and secure mounting surfaces, then confirm that the new 500-19 tires are seated correctly and inflated properly for the application. It also helps to check for rubbing at the fenders, suspension, and steering components while the car is stationary and again after a short initial drive.

A pre-war car deserves a broader mechanical look before regular use. Pay attention to wheel bearings, steering play, brake condition, and any signs that the car has been sitting for long periods. Fresh tires improve nothing if the surrounding hardware is loose or worn, and early detection of clearance or handling issues makes the first miles far more predictable.

500-19 tires on a collector 1931 Pontiac 6 Cyl. should be checked regularly for air loss, tread wear, sidewall cracking, cuts, and bulges, even if the car is driven only occasionally. Collector vehicles often age their tires through time and storage conditions as much as through mileage, so visual inspection matters just as much as tread depth.

Storage plays a big role in preserving an early tire fitment. Keeping the Pontiac away from prolonged sunlight, moisture, excessive heat, and ozone-producing equipment can help limit premature aging. Rolling the car periodically, maintaining proper inflation, and inspecting the tires before each outing are sensible habits when the vehicle spends more time displayed or stored than driven.