1941 Cadillac Tire Fitment Guide

1941 Cadillac vehicles use two tire sizes: 700-15 and 750-16. The 700-15 size fits the 60 Series, 61 Series, 62 Series, and 63 Series, while the 750-16 size fits the 67 Series and 75 Series. The available rim width range for 700-15 is 5.00 to 5.50 inches, and the available rim width range for 750-16 is 5.00 to 6.00 inches.

That split means year and make alone are not enough to choose tires for a 1941 Cadillac. Start by confirming the series number on the car and then verify whether your wheels are 15-inch or 16-inch before narrowing down whitewall style or brand preference. On a restoration where wheels may have been changed over the decades, checking the actual rim can prevent ordering the right-looking tire in the wrong diameter.

On a 1941 Cadillac, 700-15 is a traditional numeric bias-ply size. The 7.00 portion refers to the nominal section width, and the 15 indicates the wheel diameter in inches. In the 1941 Cadillac range, that size belongs to the 60 Series, 61 Series, 62 Series, and 63 Series rather than to the larger 67 and 75 Series cars.

Modern buyers sometimes mistake old numeric sizing for a direct modern metric equivalent, but it is really an older way of identifying a bias-ply tire's proportions. If your Cadillac is one of the smaller series cars, 700-15 is the size family to focus on first. After that, the choice becomes one of sidewall appearance and brand character, not whether you should move up to the 16-inch senior-car size.

On a 1941 Cadillac, 750-16 is also a numeric bias-ply size. The 7.50 portion identifies the nominal section width, and the 16 identifies the wheel diameter in inches. Within the 1941 Cadillac lineup, this size is used by the 67 Series and 75 Series, which are the larger formal models in the range.

That larger 16-inch fitment is an important distinction because it is not interchangeable with the 15-inch tire used on Cadillac's smaller series cars. If you are working with a limousine, formal sedan, or another senior-series body, confirming 750-16 early keeps the search focused on the right wheel diameter and the correct visual stance for those bigger prewar Cadillacs.

1941 Cadillac tires are available in both blackwall and wide whitewall styles in the two sizes used across the range. In 700-15, Firestone and BFGoodrich offer wide whitewalls, while Firestone and STA offer blackwall options. In 750-16, Firestone offers both blackwall and wide whitewall versions, while Lester and BFGoodrich are offered in wide whitewall form.

For many prewar Cadillac restorations, a wide whitewall is the look most owners expect, especially on formal or high-trim cars where sidewall presentation contributes heavily to the car's character. A blackwall can still make sense for a more understated presentation or for certain utility-minded preferences. When appearance matters as much as fitment, choosing the right sidewall style can be almost as important as choosing the correct size.

Firestone, BFGoodrich, and STA make tires in the 700-15 size for 1941 Cadillac applications. Firestone, Lester, and BFGoodrich make tires in the 750-16 size. All of the listed fitments for 1941 Cadillac are bias-ply products, which suits the prewar period and the way these cars were originally equipped.

Brand choice on a 1941 Cadillac usually comes down to the combination of size, sidewall appearance, and the look you want on the finished car. A smaller-series Cadillac owner has access to one brand mix in 700-15, while a 67 or 75 Series owner will see a slightly different mix in 750-16. Once the correct diameter is confirmed, comparing brands within that size helps narrow the field without crossing into the wrong fitment family.

For a 1941 Cadillac in 750-16, Firestone is available in both blackwall and 4.50-inch whitewall versions, while BFGoodrich is offered as a 4.125-inch whitewall. Firestone carries a listed maximum load of 1660 pounds at 40 psi, and BFGoodrich carries a listed maximum load of 1850 pounds at 48 psi. Both fit 16-inch rims, and both list a 5.00 to 6.00 inch rim width range.

That makes the comparison less about basic fitment and more about the look and rated specification you want on the car. Whitewall width changes the visual character noticeably on a prewar Cadillac, especially on larger formal bodies. The load-and-pressure figures should also be respected as product-specific ratings, so it is wise to match your final choice to the vehicle's intended use and to the guidance for that exact tire.

1941 Cadillac tires in 700-15 are offered for rims measuring 5.00 to 5.50 inches wide. The 750-16 size is offered for rims measuring 5.00 to 6.00 inches wide. Those ranges are size-specific, so the 15-inch and 16-inch Cadillac applications should be treated separately rather than as one interchangeable prewar fitment.

A wheel that accepts the proper diameter tire still needs to fall within the appropriate width range for best results. Before mounting replacement tires, measure the wheel or verify the wheel specification against the actual rim on the car. That is especially important on long-restored Cadillacs, where replacement wheels, swapped drums, or mixed spare-wheel combinations can create surprises decades after the car left the factory.

The available 1941 Cadillac products are listed by size and construction, but they are not marked with a universal tube-type or tubeless designation across the range. That means tube requirements should be confirmed against the exact tire selected and the wheel it will be mounted on, especially on original-style prewar rims. Tube decisions on collector cars are often tied as much to the wheel design and condition as to the tire itself.

Prewar Cadillac wheels deserve a careful inspection before final assembly. If the wheel was designed around tube-type service, or if the wheel condition and bead area make tube use advisable, that should be addressed as part of the mounting plan rather than as an afterthought. Confirming tube needs at the same time you confirm tire size helps avoid mismatching parts during installation.

Original 1941 Cadillac wheels cannot be assumed to work with all tire sizes across the full model range, because the lineup uses both 15-inch and 16-inch tire diameters. The 60, 61, 62, and 63 Series use 700-15 tires, while the 67 and 75 Series use 750-16 tires. A 15-inch wheel and a 16-inch wheel are separate fitment families even though both use period-style numeric bias-ply sizing.

If your Cadillac has stayed within its original series and chassis family, the correct wheel diameter is usually straightforward. Cars that have been restored, parted, or pieced together over many years deserve closer verification. Matching the actual wheel diameter to the series-specific tire size is the essential first check, and only after that should you compare whitewall width, brand, or the finer details of appearance.

A 1941 Cadillac should be stored in a cool, dry, dark space away from direct sunlight, electric motors, generators, welders, and other ozone-producing equipment that can age rubber. Because 1941 Cadillac fitments are bias-ply, long static storage can encourage flat-spotting more readily than many later radial applications. Clean floors, stable temperatures, and proper inflation all help preserve the tire's shape and sidewalls.

If the car will sit for an extended period, move it slightly from time to time or place it on stands if that fits your storage plan and chassis setup. Avoid parking for months on damp soil or on surfaces contaminated by petroleum products. Collector cars are often driven infrequently, so storage habits have a larger effect on tire life than sheer mileage on a prewar Cadillac.

Tires on a 1941 Cadillac should be judged more by age and condition than by miles traveled. A useful rule is to evaluate collector-car tires closely once they reach the five- to seven-year range and to treat around ten years as a point where replacement deserves serious consideration, even if tread depth still looks serviceable. The DOT date code on the tire helps establish age.

That approach matters because many prewar Cadillacs cover limited annual mileage yet spend long periods parked, which can age the casing and sidewalls before the tread appears worn out. Small cracks, persistent vibration, hardening rubber, or a tire that no longer holds pressure consistently are better replacement indicators than tread alone. On a low-use luxury car, aging usually ends tire service life before wear does.

Tires on a 1941 Cadillac should be inspected before every drive and again before any longer outing or tour. Look for sidewall cracking, cuts, bulges, irregular tread wear, and any change in pressure retention. Since many prewar cars also rely on older wheels, it is wise to inspect valve stems and the spare at the same time instead of focusing only on the four tires on the ground.

A short local drive may hide problems that become obvious only after heat builds in the tire over distance. Regular inspections help catch age-related issues early, which is especially important on a heavy luxury car with prewar suspension and braking behavior. Making tire checks part of the same routine as fluid, brake, and lighting checks is one of the simplest ways to keep a 1941 Cadillac ready for dependable use.

A 1941 Cadillac 60 Series uses the 700-15 size, and for the era the original construction expectation would have been bias-ply rather than radial. That same 700-15 fitment also appears on the 61, 62, and 63 Series, while the larger 67 and 75 Series move to 750-16. Original-equipment branding could vary by market and production practice, so the safest historical anchor is the correct size and period-correct construction.

For a restoration, that means starting with the proper series-specific size before choosing sidewall styling. If your goal is factory-style presentation, a bias-ply tire with an era-appropriate sidewall treatment will usually align better with prewar Cadillac judging expectations than a visibly modern alternative. Marque clubs, factory literature, and model-specific restoration references remain the best way to confirm body-style or market nuances within the 1941 Cadillac line.

Correct tire fitment matters a great deal when showing a 1941 Cadillac because judges and knowledgeable enthusiasts often notice size, construction, and sidewall appearance quickly. A 60, 61, 62, or 63 Series shown on 750-16 tires would be plainly incorrect, and a 67 or 75 Series shown on 700-15 would be equally out of place. On prewar luxury cars, whitewall presentation can also influence whether the overall look feels authentic to the period.

That does not mean every event uses the same judging standard, but it does mean accuracy is part of the restoration picture. If the car is being prepared for concours or marque-level judging, match the tire to the correct series first and then refine the sidewall style to suit the car's intended presentation. Event organizers and Cadillac-specific clubs are the right sources for the final word on class-specific expectations.

For a 1941 Cadillac in 700-15, Firestone is available in both blackwall and 4.125-inch whitewall versions, while BFGoodrich is available as a 4.125-inch whitewall. Firestone and BFGoodrich each carry a listed maximum load of 1700 pounds at 32 psi and fit 15-inch rims with a 5.00 to 5.50 inch width range. The STA offering in this size is a blackwall bias-ply from the Traxion line, giving the size a different visual and application character.

On a restoration-focused Cadillac, the Firestone-versus-BFGoodrich decision is often driven more by sidewall presentation and brand preference than by a major fitment difference. Since the listed load, pressure, and rim-width figures are the same between those two main passenger-car choices, the visual details carry more weight. That makes it easier to tailor the finished look of a 60 through 63 Series Cadillac without leaving the correct size family.

Available 1941 Cadillac tires are bias-ply products, and the listed products for 700-15 and 750-16 do not show modern speed-rating letters. That does not automatically make them unsuitable for normal collector-car road use, but it does mean they should be driven with the understanding that a 1941 Cadillac is a prewar luxury car with era-specific handling, braking, and suspension behavior. Tire condition and proper setup matter as much as size selection.

A well-maintained 1941 Cadillac on fresh, correctly fitted tires can be enjoyable on secondary roads and reasonable highway stretches, but sustained high-speed driving should always reflect the limitations of the whole vehicle, not just the tire. If your driving plans include longer distances, focus on overall mechanical health, correct inflation, and a thorough inspection beforehand. Collector-car highway use is safest when the car is treated as a complete system.

For 1941 Cadillac tires, the product ratings shown vary by size and brand. In 700-15, listed examples include 1700 pounds at 32 psi. In 750-16, listed examples include 1660 pounds at 40 psi and 1850 pounds at 48 psi. Those figures are tire ratings, not universal operating pressures for every 1941 Cadillac application.

Use the vehicle's factory literature as the starting point for service pressure and then confirm that your chosen reproduction tire's rated pressure and load characteristics are being respected. Avoid transferring a pressure figure from one size to another just because both belong to 1941 Cadillac vehicles. Series, tire size, tire design, and intended use all affect the correct final number, so pressure should always be matched to the exact tire on the exact car.

Before a longer drive in a 1941 Cadillac, inspect each tire for visible cracking, cuts, bulges, irregular wear, and stable inflation. Check the valve stems, confirm the spare is usable, and make sure the tires match the correct series-specific size for the car. Since 1941 Cadillac models split between 700-15 and 750-16, even the spare should be verified rather than assumed.

Tire inspection should be part of a broader pre-drive routine that also includes brakes, steering, cooling, and fluid checks. A prewar Cadillac can feel composed when properly prepared, but age-related issues often show up first on a longer outing rather than a short local loop. Spending a few extra minutes on tires and wheels before departure is one of the simplest ways to avoid preventable roadside trouble.