Hupmobile 326 Tires

Hupmobile 326 uses 6.50-17 for 1932. That size is a period numeric bias-ply fitment, and the 17 in the size code refers to a 17-inch wheel diameter. For a car in original-style configuration, that is the size to match.

The practical next step is to confirm the actual wheel on the car before selecting tires, especially if the car has been restored long ago or assembled from mixed parts. Measure the wheel or verify the stamping, then match the tire to the wheel rather than assuming every surviving Hupmobile 326 still carries its original rims.

On a Hupmobile 326, 6.50-17 is a numeric bias-ply tire size. The 6.50 figure is the nominal section width in inches, while 17 is the wheel diameter in inches. Unlike later metric radial sizing, it does not include an aspect ratio in the code.

That matters because a modern buyer may see the size as simple, yet the construction and proportions are very much of the pre-war era. If you are restoring for original appearance, keep the car on the proper numeric bias-ply format and avoid substituting a modern size without checking overall stance, fender clearance, and wheel compatibility.

Hupmobile 326 uses a numeric bias-ply size, and a tube is required. That is consistent with period wheel and tire practice for a 1932 pre-war car using 6.50-17 tires. Tube selection should match both the tire size and the wheel setup.

When fitting replacement tires, inspect the wheel carefully for condition, rust scale, spoke or rim issues, and any surface irregularities that could affect the tube. Collector cars that sit for long periods benefit from careful installation and inflation checks, because small issues at the wheel can become tube failures even when the outer tire still looks fresh.

A 1932 Hupmobile 326 uses 6.50-17. The most important confirmation is the wheel diameter, since the tire is intended for a 17-inch rim and pre-war cars are sometimes found with swapped wheels from earlier repairs or later restoration work.

Check the wheel itself, compare it with any surviving factory literature for your car, and look for consistency in wheel type across all four corners and the spare. If the car’s stance or body clearance seems unusual, treat that as a signal to verify the entire wheel-and-tire package before moving ahead with a replacement set.

A stored Hupmobile 326 should be kept in a cool, dry, dark space away from direct sunlight, ozone sources, and large temperature swings. Clean floors, proper inflation, and keeping oil, solvent, and fuel away from the tire sidewalls are especially important on a low-use pre-war car.

If the car will sit for an extended period, move it occasionally to avoid creating flat spots, or support it in a way that reduces prolonged load on one contact patch. Period-style bias-ply tires can take a temporary set more readily than modern radials, so storage habits directly affect how the car feels when it returns to the road.

Tires on a Hupmobile 326 should be inspected before every drive and more thoroughly at regular intervals during the season. On a pre-war car, inspection should include inflation, sidewall condition, tread separation signs, bead area condition, and the valve stem and tube setup.

Because collector cars are often driven infrequently, problems can develop while the car is parked rather than while it is accumulating miles. A careful walk-around before each outing is good practice, and an annual hands-on inspection by someone experienced with older wheel and tire systems is a wise habit for any Hupmobile 326 owner.

Tires on a Hupmobile 326 should be replaced when age, cracking, casing condition, hardening, vibration, or other structural concerns appear, even if the tread still looks usable. Collector tires age by time and storage exposure as much as by mileage, and pre-war cars deserve a more conservative standard than a casual visual check.

That same caution applies to spare tires and any long-kept period rubber. If a Hupmobile 326 has sat for years, have the tires evaluated before road use rather than assuming low miles mean good condition. Age-related deterioration can be hidden, and replacing suspect tires is part of protecting the car as well as its occupants.

Hupmobile 326 is listed here with 6.50-17 for 1932. That gives you the correct size family to research when restoring the car to period appearance, but final originality questions such as exact tread style or brand should be checked against surviving Hupmobile literature, photos, and marque references for the specific car.

For most restorers, the important first step is getting the size, construction type, and visual character aligned with the era. Once those are right, you can refine the details for show judging or a high-level restoration by comparing sidewall treatment and tread pattern to trusted period sources tied to Hupmobile 326.

Correct tire fitment can absolutely affect both the presentation and perceived quality of a Hupmobile 326. On a pre-war car, the wrong size or a visibly modern replacement can alter stance, wheelwell fill, and overall authenticity in ways that experienced judges and collectors notice quickly.

Even when the car is not being shown competitively, proper tires help the restoration read as coherent and historically respectful. If value and judging matter, use the right 6.50-17 size, stay close to period-correct construction, and compare your choice with standards used by Hupmobile clubs and other established restoration references.

A Hupmobile 326 restoration should use a sidewall style that suits the 1932 pre-war period and the intended presentation of the car. Period-appropriate choices for cars of this era can include blackwall or white sidewall treatments, but the correct look for a particular Hupmobile 326 depends on how the individual car is being restored.

If the goal is concours-style authenticity, compare the car with period photography, factory sales material, and established Hupmobile references before making the final call. Sidewall style changes the personality of the car more than many buyers expect, so it is worth treating as a restoration decision rather than a minor cosmetic detail.

A properly fitted, correctly installed tire in the right 6.50-17 size can be suitable for road use on a Hupmobile 326, provided the rest of the car is mechanically sound. Tire safety on a pre-war automobile depends not only on the tire itself, but also on wheel condition, tube condition, brakes, steering, suspension, and alignment.

Public-road use should always match the capabilities of a 1932 car rather than modern traffic expectations. Keep speeds sensible, allow generous stopping distance, and have the whole chassis assessed if the car is newly restored or newly acquired. A correct tire is only one part of making a Hupmobile 326 roadworthy.

Before driving a Hupmobile 326, check tire pressure, look for sidewall cracking or bulges, inspect the tread and bead area, and confirm that the wheels and lug hardware are secure. On a tube-type pre-war setup, the valve stem should also be checked for position and condition.

A brief pre-drive routine is especially important on collector cars that are used intermittently. Add brake feel, steering free play, fluid leaks, and wheel bearing condition to the checklist, because an older car can feel acceptable in the garage yet show problems only once it starts moving under load.

A Hupmobile 326 should be driven at moderate speeds that respect the limitations of a 1932 automobile and its period-style tire construction. Even with fresh tires, the practical limit is set by the complete vehicle system, including braking, chassis geometry, road conditions, and the general character of pre-war motoring.

The safest approach is to treat the car as a vintage road machine, not a modern highway cruiser. Build speed gradually, pay attention to heat, vibration, and tracking, and back off immediately if the car feels unsettled. A Hupmobile 326 is best enjoyed at speeds that leave a wide margin for reaction and control.