Cadillac V12 Tires
Cadillac V12 represents one of the great expressions of early American luxury motoring, built during the classic multi-cylinder era when smooth power and formal coachwork defined the upper end of the market. Produced here from 1931 through 1934, Cadillac V12 spans a short but important period when styling, chassis design, and wheel fitments were evolving quickly. Tire selection is not entirely straightforward because the listed fitments move through three different wheel diameters across the production run, and 1931 itself carries two distinct sizes. The first step is to confirm whether the car is on 19-inch, 18-inch, or 17-inch rims before narrowing the correct tire choice.
Cadillac V12 Tire Size Guide
Cadillac V12 production changed rim diameter during this span, moving from 19-inch and 18-inch applications in 1931 to 17-inch applications beginning in 1932. Across 1931 to 1934, this model group uses 3 distinct tire sizes. These are numeric bias-ply sizes, where the first number is the nominal section width with the decimal omitted and the last number is the wheel diameter in inches.
700-19 fits 1931 Cadillac V12 applications using the 19-inch setup. In this numeric size, 7.00 indicates a nominal 7.00-inch section width and 19 is the rim diameter, with listed products built for 19-inch wheels. Choose 700-19 only if the car carries the 19-inch wheel fitment used in 1931; all available products are bias-ply, and a tube is required.
750-18 also fits 1931 Cadillac V12 applications, but for cars equipped with the 18-inch wheel fitment rather than the 19-inch setup. In this numeric size, 7.50 indicates a nominal 7.50-inch section width and 18 is the rim diameter, with passenger-car products shown on 4-inch rims and truck-duty products shown on wider 6.00 to 6.50-inch rims. Choose 750-18 only after confirming the actual wheel and intended use, because this size includes both passenger-style and military-truck bias-ply offerings; a tube is required.
750-17 fits Cadillac V12 applications for 1932 and 1934 using the later 17-inch wheel fitment. In this numeric size, 7.50 indicates a nominal 7.50-inch section width and 17 is the rim diameter, with products offered for 17-inch wheels across both passenger-car and wider truck-duty rim widths. Choose 750-17 for 1932 and 1934 cars only after confirming whether the car needs a passenger-type or heavier-duty bias-ply tire; a tube is required.
Cadillac V12 Tires by Year
Cadillac V12 production changed from 19-inch and 18-inch wheels in 1931 to 17-inch wheels in 1932, so the first match is the actual rim diameter on the car. In 1931, more than one size is listed, reflecting a rim-diameter split rather than a single across-the-board fitment. These year listings are best used alongside the wheel measurement on the car and any original Cadillac chassis or coachwork information you have.
1931 Cadillac V12
- 700-19
- 750-18
1932 Cadillac V12
- 750-17
1934 Cadillac V12
- 750-17
Best Cadillac V12 Tires for Sale
Available Cadillac V12 tires span 3 sizes across 20 products from 5 brands, with blackwall, wide whitewall, and double-whitewall options represented. Confirm the correct year-specific size and rim diameter before selecting, especially where passenger-car and truck-duty bias-ply products share the same nominal size.
700-19 Products
These are the available products for 700-19.
750-18 Products
These are the available products for 750-18.
750-17 Products
These are the available products for 750-17.
Frequently Asked Questions
The FAQ below focuses on the issues Cadillac V12 owners run into most often: the 1931 split between two rim diameters, the move to 17-inch fitments in later years, tube-type bias-ply construction, and the difference between passenger-car and truck-duty offerings within the same nominal size.
Size Basics & Fitment
Cadillac V12 uses three listed tire sizes across the years covered here. The 1931 Cadillac V12 appears with either 700-19 on 19-inch rims or 750-18 on 18-inch rims, while 1932 and 1934 Cadillac V12 use 750-17 on 17-inch rims. All listed products for these sizes are bias-ply tires.
That means year alone is not enough for every car, especially in 1931. Measure the wheel, check the current rim stamping if present, and compare the car against chassis records or restoration paperwork so you match both the nominal size and the wheel diameter before moving ahead.
On a Cadillac V12, 700-19 is a numeric bias-ply size. The 700 portion represents a nominal 7.00-inch section width, with the decimal omitted, and the 19 means the tire fits a 19-inch rim. That size is listed for 1931 Cadillac V12 applications using the 19-inch wheel setup.
Modern buyers sometimes focus on the section width and miss the wheel diameter, but the rim size is the critical fitment point here. A 700-19 tire belongs only on a 19-inch wheel, and because the available choices are bias-ply construction, the car should be set up with tubes and proper period-style mounting hardware.
The 1931 Cadillac V12 appears with two different size listings because two different rim diameters are represented that year. One fitment uses 700-19 on a 19-inch wheel, while the other uses 750-18 on an 18-inch wheel. This is a wheel-diameter split, not just a styling preference in the sidewall.
A 1931 owner should verify the actual wheel on the car before choosing a tire, especially on a restored car that may have had wheels changed over time. If the car has mixed parts history, coachbuilt bodywork, or long ownership gaps, measure the rim directly rather than assuming one 1931 size applies to every Cadillac V12.
Cadillac V12 uses more than one rim diameter across the years shown here. The 1931 Cadillac V12 can take either a 19-inch rim with 700-19 tires or an 18-inch rim with 750-18 tires, while 1932 and 1934 Cadillac V12 use 17-inch rims with 750-17 tires.
That step-down in wheel diameter is the first thing to sort out before comparing brands, sidewall styles, or series. A quick measurement across the bead seat area of the wheel, along with a check of any surviving wheel markings, will usually settle the fitment question faster than relying on year or appearance alone.
Buying the Right Tire
A 1931 Cadillac V12 can use either 700-19 or 750-18, so the correct answer starts with the wheel itself. Cars on 19-inch rims use 700-19, while cars on 18-inch rims use 750-18. Both sizes are listed for that same model year, so the wheel diameter determines which size belongs on the car.
After the rim diameter is confirmed, compare the wheel width and the intended character of the tire. Passenger-car Cadillac V12 applications align with the narrower passenger-type offerings, while the same nominal size may also appear in heavier truck-duty form on wider rims that are not the usual choice for a luxury restoration.
Cadillac V12 tires are offered here in blackwall, wide whitewall, and double-whitewall form, depending on size and series. Those styles appear across Firestone and BFGoodrich offerings in the listed sizes, while several truck-duty versions are blackwall only. That gives a restorer a choice between a more restrained appearance and a more formal period luxury presentation.
Sidewall style should be chosen after the size and wheel are settled, not before. For a Cadillac V12 restored as an upscale early-1930s passenger car, whitewall or double-whitewall treatments often suit the character of the vehicle, while blackwalls may be more appropriate for a simpler presentation or for utility-oriented specialty applications.
The listed Cadillac V12 tire brands are Firestone, Lester, BFGoodrich, Deka, STA, and Tornel. Firestone and BFGoodrich cover the traditional passenger-car bias-ply side of the range, while Deka, STA, and Tornel appear in heavier truck-oriented versions of certain sizes. Lester is represented in 700-19.
Brand choice should follow fitment and intended use, rather than the other way around. If the goal is a luxury-car restoration look, focus first on the passenger-car lines in the correct size and sidewall treatment; if the wheel and vehicle use point to a specialty-duty application, then the truck-family options may become relevant.
Cadillac V12 tires are offered here in several distinct series, including Firestone Balloon, Firestone Classic Bias Ply, Lester Classic Bias Ply, Silvertown Classic Bias Ply, Deka Classic Truck, Super Traxion, Tornel Classic Truck, and Super Transport. The key split is between passenger-car bias-ply series such as Balloon and Classic Bias Ply, and heavier military or truck-family series intended for wider rims and higher load service.
For most Cadillac V12 passenger restorations, the practical choice is the correct passenger-oriented series in the proper rim diameter and sidewall style. The truck-family series should be viewed cautiously unless the wheel width and intended use clearly call for them, because a nominally matching size can still belong to a very different type of tire.
Maintenance & Longevity
A stored Cadillac V12 should be kept in a cool, dry, dark environment with the tires away from direct sunlight, ozone sources, solvents, and electric motors that can accelerate rubber aging. Keep the tires inflated to an appropriate pressure for storage and place the car on clean, dry flooring rather than bare earth or damp concrete.
If the Cadillac V12 will sit for long periods, roll it slightly from time to time or support it in a way that reduces sustained flat-spotting without stressing the suspension. Collector cars with bias-ply tires benefit from regular visual checks for cracking, sidewall distortion, and bead-area changes even when the car is not being driven.
Tires on a Cadillac V12 should be inspected before each drive and more thoroughly several times during the year, even if the car sees very limited mileage. On an early-1930s collector car running tube-type bias-ply tires, inspection should include tread, sidewalls, valve stems, tube condition where service history is known, and the wheel itself.
A practical routine is to check pressure, visible cracking, uneven wear, and any sign of movement between tire and rim before the car leaves the garage. If the Cadillac V12 has been in long storage, recently restored, or driven only occasionally at events, a specialist inspection at regular intervals is wise because age can matter more than tread depth.
Cadillac V12 tires should be replaced when age, cracking, hardening, deformation, repeated air loss, or casing concerns appear, even if tread still looks usable. Collector tires often age out before they wear out, particularly on cars that are driven sparingly and stored for long stretches. Tread depth alone is not a reliable guide on a low-use classic.
Any Cadillac V12 tire with uncertain age or service history deserves a cautious evaluation before road use. That principle is even more important for older specialty or period tires, since rubber condition, internal structure, and long-term storage history matter as much as outward appearance on a valuable prewar automobile.
Restoration & Authenticity
Cadillac V12 is represented here by period-appropriate bias-ply offerings in sizes 700-19, 750-18, and 750-17, with passenger-car series such as Firestone Balloon, Firestone Classic Bias Ply, Lester Classic Bias Ply, and Silvertown Classic Bias Ply. Because more than one size appears across the production span, the original fitment depends on the specific year and wheel diameter on the car.
For an authenticity-minded restoration, start with the correct year and rim diameter, then compare surviving factory literature, build records, and marque-club guidance for the exact chassis or body configuration. That approach matters especially on 1931 Cadillac V12 cars, where more than one wheel-and-tire combination is represented.
Correct tire fitment can absolutely affect how a Cadillac V12 is judged and how convincingly it presents as a proper restoration. Judges and knowledgeable buyers notice whether the wheel diameter, tire profile, construction type, and sidewall treatment suit the year and character of the car. A luxury prewar automobile looks different when the tire choice is visually or dimensionally off.
For a Cadillac V12, getting the size right comes before choosing between blackwall, wide whitewall, or double-whitewall styling. If the car is headed for marque judging or top-tier concours review, compare your tire choice with period photographs and Cadillac club references so the final look matches the standard expected for the specific car.
Cadillac V12 tires are available here in blackwall, wide whitewall, and double-whitewall styles, and all three can be relevant depending on the look of the restoration. On a formal early-1930s luxury car, whitewall treatments often align well with the upscale character of the vehicle, while blackwalls suit a more restrained or utilitarian presentation.
The right choice depends on the exact year, body style, and restoration goal rather than on size alone. If the aim is strict authenticity, compare the sidewall treatment on the car with period Cadillac imagery, judging standards, and club guidance before deciding, because the sidewall style changes the appearance of a Cadillac V12 as much as the tire size does.
Safety & Road Use
A properly fitted, correctly mounted, and well-maintained bias-ply tire can be appropriate for public-road use on a Cadillac V12 within the limits of a prewar collector car. Safety depends on using the correct rim diameter, matching the tire to the wheel width and application, maintaining proper inflation, and ensuring the car itself is mechanically sound.
A Cadillac V12 should be driven with the expectations of an early-1930s automobile, not a modern sedan. Braking distances, steering feel, road crown response, and wet-weather behavior all differ, so the tire choice should be part of a broader mechanical review that includes wheels, tubes, brakes, steering, and suspension.
Before driving a Cadillac V12, check tire pressure, visible sidewall condition, tread condition, valve stems, and the overall seating of the tire on the rim. Also confirm that all four tires match in size and type, and that no passenger-car tire has been mixed with a heavier truck-duty fitment simply because the nominal size appears similar.
That pre-drive check should be paired with a quick look at wheel fasteners, brake operation, steering response, and any sign of fluid leaks or long-storage issues. On a prewar Cadillac V12, a careful five-minute inspection before departure can prevent damage to expensive bodywork and reduce the risk of being stranded by an avoidable tire or wheel problem.
A Cadillac V12 on period-style bias-ply tires should be driven at moderate speeds that respect the age and design of the car, the condition of the tires, and the quality of the roads. Even when the tire is new production, the vehicle remains an early-1930s luxury automobile with steering, suspension, and braking characteristics very different from modern traffic.
The sensible approach is to let tire condition, wheel integrity, and overall mechanical confidence set the pace rather than trying to match modern highway habits. Smooth inputs, extra following distance, and conservative cruising speeds will usually make a Cadillac V12 more enjoyable to drive and place less stress on its tires, tubes, and chassis.