1931 Vehicle Tire Fitment Guide

Rim Diameter: 19 in  ·  Sidewalls: Blackwall, Wide Whitewall

Appearing across several 1931 cars including the Buick 60 Series, Nash 80 Series, Peerless Standard, and Willys 80D, 550-19 is one of the more broadly used sizes for the year. Available BFGoodrich Silvertown Classic Bias Ply products include Blackwall and Wide Whitewall versions, and listed examples specify a 19-inch rim with a 2.50 to 3.00-inch rim width range and a maximum load capacity of 1040 pounds at 32 psi. That makes this size a practical fitment for owners who want both broad vehicle coverage and some sidewall-style choice in a period-oriented bias-ply tire.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall, Wide Whitewall

The 650-19 size is one of the most important 1931 fitments, used across a wide range of cars from the Buick 80 Series and Cadillac V8 to Packard 826 Series, Studebaker President, and Pierce Arrow 43 Series. Product selection is relatively strong here, with Firestone and Lester offerings in Blackwall and Wide Whitewall styles, including Firestone Balloon choices for 3.25 to 3.50-inch rim widths. On larger 1931 cars, this size often represents a meaningful step up from mainstream fitments, so buyers should pay close attention to wheel width, vehicle weight, and desired period appearance.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall, Double-Whitewall, Wide Whitewall

Used on high-end 1931 applications such as the Cadillac V12, Duesenberg 8 Cyl., Lincoln 8 Cyl., and Packard 840 and 845 Series, 700-19 sits firmly in the larger luxury-car class for the year. Available products include Firestone and Lester bias-ply choices, with both classic and balloon-style Firestone offerings, plus Blackwall and Double-Whitewall sidewall treatments. Some listed products specify 3.75 to 4.00-inch rim widths and load capacities around the mid-1500-pound range. For owners of substantial classic cars, this size combines visual presence with a selection broad enough to support different restoration themes.

Rim Diameter: 18 in  ·  Sidewalls: Wide Whitewall, Double-Whitewall, Blackwall

The 750-18 fitment appears on the 1931 Cadillac V12 and 1931 Cunningham 8, marking it as a large, prestige-oriented size within the 1931 range. Firestone Balloon products are available in Blackwall, Wide Whitewall, and Double-Whitewall forms, with listed specifications including a 4-inch rim width and a maximum load capacity of 1930 pounds at 40 psi. A Deka Classic Truck option also exists in this size with a much heavier-duty profile and different rim-width range, so buyers should distinguish carefully between passenger-car and truck-oriented products when selecting tires for collector passenger vehicles.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall, Wide Whitewall, Double-Whitewall

The 750-19 size is tied to the 1931 Cadillac V16, making it one of the most specialized and upscale fitments of the year. Firestone Balloon products are offered in Blackwall, Wide Whitewall, and Double-Whitewall styles, with listed 19-inch rim diameter and a 4-inch rim width on certain products. This is the kind of size where preserving the visual authority of the vehicle matters just as much as basic fitment. For a major classic luxury car, confirming wheel dimensions, load needs, and the preferred sidewall presentation is especially important before narrowing product choice.

Rim Diameter: 18 in  ·  Sidewalls: Double-Whitewall, Blackwall, Wide Whitewall

Shared by a broad mix of notable 1931 vehicles including the Cadillac V8, Cord L29 Series, La Salle 340, Marmon 16 Series, and Reo Royale, 700-18 is a prominent large-car fitment. Firestone offers several bias-ply products here, including Firestone Balloon and Firestone Classic Bias Ply versions in Blackwall, Wide Whitewall, and Double-Whitewall styles. Listed examples show a 3.75 to 4.00-inch rim-width range and a maximum load capacity of 1520 pounds at 36 psi. This size is well suited to owners balancing period look, generous sidewall options, and a strong match for substantial early-1930s vehicles.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall, Wide Whitewall

The 475-19 size appears on the 1931 Chevrolet 6 Cyl., Durant 10 Series, Durant 12 Series, Ford A Series, and Plymouth PA, making it one of the key mainstream sizes for 1931 vehicles. Goodyear Deluxe All-Weather products are available in both Blackwall and Wide Whitewall versions, with listed 19-inch rim diameter, 3-inch rim width, and a 900-pound load capacity at 32 psi. This fitment is especially relevant to owners of smaller and mid-priced cars from the period who want a recognizable early-1930s profile and a tire choice that aligns with common collector-car restoration goals.

Rim Diameter: 18 in  ·  Sidewalls: Blackwall, Wide Whitewall, Double-Whitewall

Used across the 1931 Chrysler 66 Series and 70 Series, Dodge 8 Cyl., Graham Special, Hudson 8 Cyl., Oakland V8, and several other models, 550-18 is a widely shared 18-inch fitment. Product choices span Excelsior, Firestone, and BFGoodrich, with Blackwall, Wide Whitewall, and Double-Whitewall sidewall styles available depending on the product selected. Some listed products specify rim widths from 3 to 4 inches and load capacities up to 1125 pounds at 32 psi. That variety makes 550-18 a useful size for buyers who want both broad vehicle coverage and visible style options.

Rim Diameter: 17 in  ·  Sidewalls: Double-Whitewall, Blackwall, Wide Whitewall

The 750-17 size is associated with the 1931 Chrysler CG8 Imperial and stands out as a large 17-inch fitment for a premium model. Available products include Firestone Balloon and BFGoodrich Silvertown Classic Bias Ply tires, offered in Blackwall, Wide Whitewall, and Double-Whitewall styles. Certain listed products specify a 4-inch rim width, while one BFGoodrich whitewall example lists a 5.50 to 6.00-inch rim-width range, so product-by-product specification review matters here. On a substantial luxury application, this size calls for careful checking of wheel dimensions and restoration intent before choosing a tire.

The 5.25-19 size appears on the 1931 Chrysler CM6, De Soto 8CF, Elcar 75A Series, Nash 70 Series, Peerless 61A, and Studebaker 6 Cyl. It represents a useful middle-ground fitment in the 1931 lineup, bridging smaller 4.75-inch-class applications and the broader 5.50 and 6.50 series sizes used on heavier cars. Because several makes share this size, it can simplify searching for tires across similarly sized vehicles of the period. Even so, model-specific wheel condition and present configuration should still be reviewed, especially on older restorations that may no longer retain their original wheels.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall

Found on the 1931 De Soto 6SA, Dodge 6 Cyl., Essex Super 6, Nash 60 Series, Plymouth Export, Pontiac 6 Cyl., and Willys 97 & 98D Series, 500-19 is another central 1931 passenger-car fitment. Current product listings include an Excelsior Comp H Blackwall tire and a Firestone Dirt Track ribbed-front tire, both bias-ply but aimed at different uses and visual priorities. That means shoppers should not assume every product in a size serves the same purpose. For road-driven collector cars, the exact tire series and intended application deserve as much attention as the size itself.

The 30X6.75 size is used on the 1931 Elcar 130 Series and 1931 Elcar 140 Series, and it follows an older diameter-by-section naming convention rather than the simpler dash-format sizes used on many other 1931 vehicles. This type of designation can create confusion if a vehicle has been restored with different wheels over time, so exact verification is important. Within the year’s fitment landscape, it represents a larger specialty application rather than a mainstream shared size. Owners researching Elcar tires should focus on the complete size marking and avoid treating it as interchangeable with similarly proportioned numeric sizes.

The 29X5.25 fitment is specific to the 1931 Elcar 75A Series and is best understood as a period diameter-by-section size. Unlike later metric or modern radial designations, this format reflects early tire naming practice and should be matched exactly when researching replacement tires. Since it appears on just one model family here, it is a specialized application rather than a broadly shared size. For owners of uncommon collector cars, this type of fitment often requires extra attention to wheel measurement, clearance, and the overall visual proportions expected on a properly restored early-1930s vehicle.

The 29X5.50 size is shared by the 1931 Elcar 96 Series and the 1931 Gardner 136 and 148 models. As a diameter-by-section designation, it belongs to an older sizing convention that predates later standardized passenger-car markings, so accurate identification is important. This size sits in an interesting middle area within the 1931 market, larger than many mainstream passenger fitments but not among the most imposing luxury-car sizes. Because it appears across more than one make, it can help owners compare certain less-common applications, though wheel and clearance checks remain essential on restored cars.

Rim Diameter: 19 in  ·  Sidewalls: Wide Whitewall

Used on the 1931 Elcar 96 Series, Hupmobile C, Peerless Master, Ruxton 8 Cyl., Studebaker Commander, and Stutz LA, 600-19 is a meaningful shared fitment among upper-midrange and specialty vehicles of the year. The currently listed product selection includes a Lester Classic Bias Ply Wide Whitewall, making this size particularly attractive for owners prioritizing a formal early-1930s look. Because only one listed product style is shown here, buyers should be sure the desired sidewall treatment and vehicle presentation align before ordering. This size is a good example of how 1931 fitment can be shared across very different makes.

The 28X5.50 fitment is associated with the 1931 Gardner 136 and 1931 Gardner 148. Like other X-format designations used in this period, it follows an older diameter-by-section convention and should not be translated casually into another 5.50-series size. In practical terms, this is a specialized fitment that matters most to owners preserving model-specific proportions on less common collector cars. When a 1931 vehicle carries a size in this format, wheel verification becomes especially important, since surviving cars may have been altered over decades of use, storage, or restoration.

The 30X6.20 size is unique here to the 1931 Gardner 158 Series and represents another period diameter-by-section application. It falls outside the more familiar mainstream 19-inch and 18-inch dash-format sizes that dominate much of the 1931 market, so it should be treated as a distinct fitment rather than a close variant of 6.00 or 6.50-series numeric sizes. For owners of uncommon vehicles, preserving correct proportions often matters as much as locating any tire that mounts on the wheel. Exact size identification and careful wheel inspection are especially important with this type of application.

Rim Diameter: 18 in  ·  Sidewalls: Wide Whitewall, Blackwall

The 650-18 size is used on the 1931 Gardner 158 Series, Graham Custom, Jordan 6, and Reo 30 & 35 Series. Firestone Balloon products are available in both Blackwall and Wide Whitewall forms, with listed 18-inch rim diameter, a 3.25 to 3.50-inch rim-width range, and a maximum load capacity of 1205 pounds at 36 psi on one product. This size represents a solid upper-range passenger-car fitment without moving into the largest luxury dimensions. It can be a strong choice for restorers who want a period balloon-tire look with some flexibility in sidewall appearance.

Shared by the 1931 Graham Standard, Jordan 66, Kissel 75, Kissel 95, and Willys-Knight 66D Series, 6.00-18 is a moderate 18-inch fitment within the 1931 lineup. It is useful for buyers comparing several different makes that occupy a similar size class, even though the vehicles themselves may vary in body style and overall character. This fitment shows how 1931 tire selection often depended more on exact model positioning than on make alone. When shopping in this size, the priority should be confirming the car’s exact wheel and avoiding assumptions based only on year or brand.

The 31X6.00 size is associated with the 1931 Ruxton 8 Cyl. and is one of the more specialized period designations found in this year’s applications. Its X-format marking identifies it as part of an older sizing system, and that alone makes careful verification more important than with common shared numeric sizes. On an uncommon and distinctive collector vehicle, the relationship between tire size and overall styling is especially visible. Owners researching this fitment should focus on preserving the proper visual scale and confirming wheel dimensions rather than trying to substitute a nearby modern-looking designation.

Rim Diameter: 20 in  ·  Sidewalls: Wide Whitewall, Blackwall

The 650-20 fitment appears on the 1931 Stutz MA and is notable for its 20-inch rim diameter, which sets it apart from the more common 17-, 18-, and 19-inch applications in 1931. Product offerings include Firestone Classic Bias Ply, plus Denman and Deka truck-oriented blackwall choices. Some listed products specify rim widths from 3.00 to 5.00 inches and a maximum load capacity of 2120 pounds at 60 psi. Because this size includes both passenger-style and truck-style product lines, buyers should review tire series and intended use carefully before choosing a replacement.

Rim Diameter: 20 in  ·  Sidewalls: Double-Whitewall, Wide Whitewall, Blackwall

Used on the 1931 Stutz MB, 700-20 is among the most substantial fitments in the 1931 range. Product choices include Firestone Balloon and BFGoodrich Silvertown Classic Bias Ply tires, available in Blackwall, Wide Whitewall, and Double-Whitewall styles. Listed specifications vary by product, with some examples built for 3.75 to 4.00-inch rims and others for 5.00 to 5.50-inch rims, so this is a size where the product details matter just as much as the sidewall treatment. For a large collector car, careful wheel measurement is essential before narrowing to a specific brand or series.

The 31X6.20 size is specific to the 1931 Windsor 92 Series and reflects the continued use of diameter-by-section sizing on certain larger early-1930s cars. It is distinct from the more widely shared 650-19 fitment also associated with the Windsor 92 Series, which makes exact wheel and application verification especially important. This sort of dual-size association can point to configuration differences or alternate wheel setups, and it should encourage a careful inspection of the car as it sits today. On a restored vehicle, relying on the mounted tire size or wheel measurements is often the safest path.