1926 Cunningham 8 Tires

The 1926 Cunningham 8 uses two primary bias-ply tire sizes: 33X6.75 and 700-21. Those are not just two ways of writing the same thing. They belong to different vintage sizing conventions, and they also correspond to different rim diameters.

That means the correct choice depends on the actual wheel setup on the car. A Cunningham 8 V6 can be associated with either size, so the safest starting point is to confirm the wheel and rim diameter already in place before choosing a tire by appearance, brand, or sidewall style.

A 1926 Cunningham 8 can use more than one rim diameter depending on which primary tire size is on the vehicle. The 33X6.75 fitment is associated with a 5.0-inch rim diameter, while the 700-21 fitment uses a 21-inch rim diameter.

Because those dimensions are so different, rim confirmation should come before any tire purchase. Check the actual wheel on the car rather than assuming the sub-model settles it, especially on a collector vehicle that may have been restored, re-wheeled, or otherwise changed over the years.

On a 1926 Cunningham 8, 700-21 is a numeric bias-ply size. The 7.00 refers to the nominal section width in inches, and the 21 refers to the rim diameter. It is a traditional vintage tire format used on 21-inch wheels rather than a modern metric radial code.

Understanding that format helps narrow the search to the proper size family before comparing brands or sidewall treatments. Once the 21-inch wheel is confirmed, the next decision becomes which period-style presentation best suits the car, whether that means blackwall, wide whitewall, or another traditional look.

Start with the basics: confirm that the car actually uses the 700-21 fitment and that the wheel matches the required 21-inch rim diameter. From there, compare the available bias-ply options by brand, tire series, sidewall style, and any rim-width guidance that aligns with the wheel already on the vehicle.

Appearance matters on a car from this era, but wheel compatibility matters just as much. Some 700-21 products also include different load figures, weight values, or rim-width ranges, so a careful choice should balance the visual presentation you want with the wheel setup and the way the Cunningham will actually be used.

In 700-21, the 1926 Cunningham 8 has access to several traditional sidewall styles. Available choices include blackwall, wide whitewall, and double-whitewall. Those options give the car noticeably different visual character even when the tire size itself stays the same.

A blackwall tends to create a more restrained, mechanical look, while a wide whitewall or double-whitewall gives the car a more formal and prominent period presentation. The right choice depends on how the Cunningham is being finished visually and whether the goal is touring use, a restoration-minded appearance, or a balance of both.

For the 700-21 fitment used on the 1926 Cunningham 8, available brands include Firestone, Michelin, Lester, and Excelsior. Those brands appear across several vintage-style tire series, including Firestone Balloon, Double Rivet, Lester Classic Bias Ply, and Comp H.

Brand choice should be considered alongside construction, sidewall treatment, and wheel compatibility rather than in isolation. Two tires may share the same size but differ in presentation or rim-width specification, so the better comparison is which option best matches the car's existing wheels and the appearance you want to achieve.

A period-style starting point for a 1926 Cunningham 8 is staying with the correct bias-ply size family already matched to the car's wheels, whether that is 33X6.75 or 700-21. On 700-21 applications, period-style series such as Firestone Balloon, Michelin Double Rivet, Lester Classic Bias Ply, and Excelsior Comp H provide distinct vintage presentations.

The best choice depends on whether the goal is a more understated touring look or a more formal whitewall presentation. If exact historical originality matters down to brand and sidewall treatment, the tire should be compared against marque-specific restoration references and the individual car's history before making a final selection.

Correct tire fitment matters a great deal on a 1926 Cunningham 8 because tire size influences stance, wheel appearance, and the overall visual proportions of the car. Using the proper size family also helps preserve the intended relationship between the body, fenders, and wheels on a large prewar-era automobile.

That is especially important here because 33X6.75 and 700-21 are not interchangeable descriptions of one tire. A restoration-minded owner should confirm the wheel setup first, then choose a bias-ply tire with a sidewall style that supports the finish of the vehicle rather than selecting by appearance alone.

Yes. Any change to wheels, suspension height, brake components, or body clearances can affect tire fitment on a 1926 Cunningham 8. That matters even more on a collector vehicle using vintage size conventions, because the difference between 33X6.75 and 700-21 starts with a fundamentally different wheel setup.

A Cunningham that has been restored over many decades may not still match its earlier tire arrangement. Checking actual rim diameter, wheel width, and clearance around fenders and steering components is a smart step before selecting tires, especially if the car has aftermarket wheels or any changes from an earlier restoration.

Before driving a 1926 Cunningham 8 on new tires, inspect the wheels for correct size and condition, make sure the tires are mounted to the proper rims, and confirm there is no interference at the fenders or steering components. Tire pressure should also be set appropriately for the tire being used.

A broader road-readiness check is worthwhile on any low-use collector car. Look over the suspension, steering, wheel hardware, and the old tires that came off the car for signs of uneven wear that might point to an alignment or mechanical issue. That helps the new tires perform as intended once the car is back in service.

700-21 tires on a collector 1926 Cunningham 8 should be inspected regularly for pressure loss, sidewall cracking, cuts, bulges, and any tread issues that may develop while the car is stored. Collector vehicles often age tires by time and storage conditions long before they wear them out through mileage.

Storage environment makes a real difference. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps protect the rubber over time. Routine checks before each outing are especially important on a seldom-driven car, since problems can develop quietly between drives rather than during normal daily use.