The 1948 Cadillac 75 Series came from Cadillac’s immediate postwar luxury era, when long-wheelbase formal sedans and commercial chassis carried as much presence as transportation value. For owners restoring or maintaining one today, tire choice matters because this model uses a single primary fitment: 750-16 in bias-ply construction on a 16-inch rim. That keeps sizing straightforward, but there is still meaningful choice in period-style presentation, including blackwall and wide whitewall options, along with several tire series and heavier-duty 750-16 variants. The right selection depends on whether the goal is formal restoration appearance, commercial-duty character, or careful road use on the vehicle’s existing wheel setup.
Which Tire Size Is Right for The 1948 Cadillac 75 Series
The 1948 Cadillac 75 Series uses one primary tire size: 750-16. It is a bias-ply fitment for a 16-inch rim, and that same basic size carries across the covered sub-models. With the size question settled, the real decision becomes choosing the right style within 750-16, whether that means a formal wide whitewall look, a blackwall presentation, or a heavier-duty tire that suits the vehicle’s intended use and wheel setup.
A 750-16 is a vintage numeric bias-ply size in which the 750 refers to a nominal section width of about 7.50 inches, while 16 indicates the wheel diameter in inches. On the 1948 Cadillac 75 Series, this size preserves the original-era bias-ply format and the tall, traditional appearance associated with large postwar Cadillacs. Available choices include Firestone, Lester, BFGoodrich, and STA offerings, with both blackwall and wide whitewall styles across classic bias-ply and heavier-duty series. That makes 750-16 the key starting point whether the priority is restoration-oriented appearance, formal road use, or a more utility-focused presentation.
Tire fitment is straightforward across the covered 1948 Cadillac 75 Series sub-models because both use the same primary size and construction. Checking the exact sub-model still helps when choosing between a formal passenger-car appearance and a more commercial or utility-oriented tire style.
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1948 Cadillac 75 Series 8 Cyl.
The 1948 Cadillac 75 Series 8 Cyl. uses the same 750-16 bias-ply fitment as the broader model line. That keeps selection focused on presentation and intended use, such as choosing a wide whitewall for a restoration-oriented look or a blackwall option for a more restrained appearance.
The 1948 Cadillac 75 Series Commercial 8 Cyl. also uses the 750-16 bias-ply size on a 16-inch rim. For this sub-model, tire choice often comes down to whether the vehicle is being presented in a formal restored style or maintained with a more commercial-duty tire character.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1948 Cadillac 75 Series Tires for Sale
Available 750-16 choices span Firestone, Lester, BFGoodrich, and STA, with blackwall and wide whitewall sidewall styles. The range also includes classic bias-ply passenger-car series and heavier-duty military or transport-style offerings, so appearance, load specification, and intended use all become useful comparison points.
These 1948 Cadillac 75 Series FAQs focus on the 750-16 fitment, 16-inch rim use, bias-ply tire selection, sidewall and brand choices, restoration-minded appearance, and the maintenance checks that matter before putting a large postwar Cadillac back on the road.
Tire Size & Fitment
What tire size fits a 1948 Cadillac 75 Series?
The 1948 Cadillac 75 Series uses a 750-16 tire size. That is a vintage numeric bias-ply fitment used on a 16-inch rim, and it applies across the covered 8-cylinder and Commercial 8-cylinder versions of the model.
That makes the first step fairly simple: start with 750-16 rather than trying to translate the car into a different primary size. After that, the real choice is among tire styles and series, including blackwall, wide whitewall, and heavier-duty versions, while also confirming the actual wheels on the car if it has been changed from its original-style setup.
What size rim does a 1948 Cadillac 75 Series use?
The 1948 Cadillac 75 Series uses a 16-inch rim with its 750-16 tire size. Several available 750-16 products are built around that same 16-inch rim diameter, and many specify a rim-width range of 5.00 to 6.00 inches.
Rim diameter must match the tire exactly, so a 16-inch tire belongs only on a 16-inch wheel. Rim width also matters, especially on a long, heavy postwar Cadillac, so it is worth checking the actual wheel before choosing among passenger-style bias-ply tires and the heavier-duty 750-16 options that may have different load and use characteristics.
Do all 1948 Cadillac 75 Series sub-models use the same tire size?
Yes. The covered 1948 Cadillac 75 Series sub-models both use 750-16 bias-ply tires. That includes the 1948 Cadillac 75 Series 8 Cyl. and the 1948 Cadillac 75 Series Commercial 8 Cyl.
Shared sizing makes fitment easier, but it does not make every 750-16 choice identical in character. A formal sedan restoration may call for a classic wide whitewall presentation, while a commercial-chassis vehicle may lead an owner toward a more utility-focused blackwall or heavier-duty series, so intended appearance and use still matter once the size is confirmed.
Choosing the Right Tire
What should I consider when choosing a 750-16 tire for a 1948 Cadillac 75 Series?
Start with the correct primary size, which is 750-16, and keep the 16-inch rim requirement in mind. From there, compare whether the tire is a classic passenger-car bias-ply or a heavier-duty 750-16 variant, along with sidewall style, brand, tire series, weight, and any stated load specification.
A restoration-oriented Cadillac often looks best with a traditional wide whitewall, while a more utilitarian presentation may point to blackwall options. It also helps to match the tire to the car’s actual role, since a show-focused sedan, a preserved commercial chassis, and a vehicle intended for more regular road use may not all call for the same product emphasis.
What sidewall styles are available for 1948 Cadillac 75 Series tires?
The 750-16 choices for a 1948 Cadillac 75 Series include both blackwall and wide whitewall sidewall styles. That gives owners a clear visual decision between a more understated tire presentation and a more formal, restoration-oriented look that suits many large postwar luxury cars.
Sidewall style changes appearance more than fitment, but it can strongly influence the finished character of the vehicle. A wide whitewall usually complements a formal sedan restoration, while blackwall options can make sense for a more restrained look or for commercial and utility-themed presentations, especially when paired with one of the heavier-duty 750-16 tire series.
What brands offer tires for the 1948 Cadillac 75 Series?
The 1948 Cadillac 75 Series has 750-16 tire options from Firestone, Lester, BFGoodrich, and STA. Those choices span classic bias-ply passenger-car tires as well as more commercial, military, and transport-style 750-16 offerings.
Brand alone should not drive the decision. It is better to compare the role each tire is built for, the sidewall treatment, the tire series, and whether the wheel width and intended use of the Cadillac line up with the product. That approach keeps the choice focused on how the car is being restored, displayed, or driven rather than on name alone.
Restoration & Appearance
Which tire should I choose for a period-style 1948 Cadillac 75 Series?
A period-style starting point for a 1948 Cadillac 75 Series is the correct primary size and construction: 750-16 in bias-ply form. Within that size, classic passenger-car tires with traditional sidewall treatments usually make the most visual sense for a restoration-minded car from Cadillac’s immediate postwar luxury era.
The final choice depends on how authentic the presentation needs to be and how the vehicle will be used. A wide whitewall often suits the formal look many owners want, while blackwall options create a more restrained appearance. If exact originality matters, compare the tire choice with marque references, period photography, or vehicle-specific historical documentation.
How does tire construction affect the appearance of a restored 1948 Cadillac 75 Series?
Construction plays a major visual role on a restored 1948 Cadillac 75 Series because its primary fitment is a bias-ply tire. A 750-16 bias-ply preserves the traditional profile and period-style presentation associated with large late-1940s American luxury cars, especially when paired with an appropriate sidewall treatment.
Appearance is not only about whitewall versus blackwall. Tread style, sidewall contour, and the overall stance of the car all contribute to how finished the Cadillac looks. Even with the correct size, a heavy-duty commercial-style 750-16 can give a different visual impression than a classic passenger series, so construction type and tire series deserve close attention during restoration planning.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1948 Cadillac 75 Series?
Yes. Even though the primary size is 750-16, modifications can change how that size works on a 1948 Cadillac 75 Series. Aftermarket wheels, different wheel widths, altered suspension height, brake conversions, or body and steering changes can all affect clearance and overall compatibility.
A collector Cadillac may have had decades of repairs or upgrades, so it helps to inspect the actual wheel and chassis setup before choosing a tire. Confirm the wheel is still a 16-inch rim, check the wheel width, and look for any interference at the fenders, steering components, or suspension before assuming any 750-16 option will suit the vehicle equally well.
What should I inspect before driving a 1948 Cadillac 75 Series on new tires?
Before road use, inspect the wheels for correct diameter and sound condition, confirm the tires are mounted properly, and check inflation pressure carefully. It also helps to look over the suspension, steering, and brakes, since a large 1948 Cadillac depends on all of those systems working together for stable road behavior.
Collector cars often sit for long periods, so a pre-drive walkaround matters even with new tires installed. Check for uneven stance, rubbing marks, loose wheel hardware, and any sign of air loss after mounting. A short, cautious test drive can then reveal pull, vibration, or clearance issues before the car is taken on a longer trip.
How should 750-16 tires on a collector 1948 Cadillac 75 Series be maintained?
750-16 tires on a collector 1948 Cadillac 75 Series should be checked regularly for inflation, tread condition, sidewall cracking, bulges, cuts, and signs of air loss. Because older collector vehicles may spend long periods parked, visual inspection matters just as much as mileage when judging tire condition.
Storage habits also affect service life. Keeping the Cadillac away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires, and moving the car occasionally can reduce long stationary loading. It is also wise to inspect the spare and the valve stems, since a long-wheelbase postwar Cadillac is not the kind of car to leave stranded by avoidable tire neglect.
