The 1926 Studebaker Standard comes from an era when American cars were moving quickly from purely utilitarian transportation toward more refined, higher-volume motoring. Tire choice on a car like this is closely tied to correct fitment and to the way early wheel and tire sizing conventions were expressed. This Studebaker Standard uses bias-ply tire fitments, with both 31X5.25 and 525-21 appearing in covered applications. That makes the real decision less about modern tire categories and more about confirming the wheel setup, then choosing the right period-style presentation, including blackwall or wide whitewall options where available. For restoration, touring, or display use, wheel diameter and tire format deserve a careful check before anything is mounted.
Which Tire Size Is Right for The 1926 Studebaker Standard
The 1926 Studebaker Standard uses two primary bias-ply tire sizes, and the first step is confirming which wheel setup is actually on the car. These sizes do not share the same rim diameter, so identifying the wheel diameter matters before comparing tread style, sidewall appearance, or the available product choices within the correct fitment.
31X5.25 is an antique diameter-by-section size, meaning the first number refers to the tire's approximate overall diameter and the second refers to its section width. On an early car such as the 1926 Studebaker Standard, that format reflects an older sizing convention that differs from later numeric bias-ply designations. This fitment remains a bias-ply choice and should be approached with close attention to the wheel actually installed on the vehicle. It is most relevant when preserving an early-period tire presentation and when matching the tire format already used by the car's existing wheel setup.
525-21 is a numeric bias-ply size in which the 5.25 designation represents nominal section width in inches and the 21 identifies the rim diameter. For a 1926 Studebaker Standard, it is the more familiar vintage passenger-car format and it stays true to the car's original-era bias-ply character. Available choices include Firestone and Excelsior options, with blackwall and wide whitewall sidewall treatments across series such as Firestone Classic Bias Ply and Comp H. This size is the one to evaluate when the car is on 21-inch wheels and the goal is a traditional pre-war look.
Sub-model fitment is straightforward here because the covered 1926 Studebaker Standard 6 Cyl. uses the same pair of primary tire sizes already associated with this vehicle. The important step is not sorting between trims, but confirming which wheel diameter and tire format your particular car is actually carrying today.
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1926 Studebaker Standard 6 Cyl.
The 1926 Studebaker Standard 6 Cyl. is associated with both 31X5.25 and 525-21 bias-ply fitments, so tire selection begins with the wheel and tire setup on the car rather than with a trim-level distinction. That makes wheel confirmation especially important before choosing between a restoration-oriented blackwall or wide whitewall presentation.
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 1926 Studebaker Standard Tires for Sale
Available 525-21 options include Firestone and Excelsior bias-ply tires in different series, with blackwall and wide whitewall presentations. The main points to compare in the product grid are sidewall style, tire series, and rim-width compatibility for the wheel already on the car.
These 1926 Studebaker Standard tire questions focus on the two primary size formats, wheel-diameter confirmation, period-style bias-ply choices, and the checks that matter before putting a collector car back on the road.
Tire Size & Fitment
What tire size fits a 1926 Studebaker Standard?
The 1926 Studebaker Standard uses two primary tire sizes: 31X5.25 and 525-21, both in bias-ply construction. Those are not just two ways of writing the same thing, because they represent different sizing conventions and they are tied to different wheel diameters.
Choosing between them starts with the car itself. A Studebaker that carries 21-inch wheels points toward 525-21, while a car using the older 31X5.25 format should be matched to that setup. On an early vehicle, wheels may have been changed over time, so measuring the wheel and confirming the existing tire format is the safest first step.
What size rim does a 1926 Studebaker Standard use?
Rim size on the 1926 Studebaker Standard depends on which of its two primary tire fitments is on the car. The 525-21 size uses a 21-inch rim, while 31X5.25 is associated here with a different wheel diameter.
That means rim confirmation matters before a tire is chosen. Early cars are especially likely to have had wheel, tire, or restoration changes during their lives, so the best approach is to inspect the wheel itself rather than relying on assumption. Matching the correct tire format to the actual rim is more important than selecting by appearance alone.
What does 31X5.25 mean on a 1926 Studebaker Standard?
31X5.25 is an antique diameter-by-section tire size. The 31 refers to the tire's approximate overall diameter, and the 5.25 refers to section width, which is a much earlier sizing method than the later numeric bias-ply format used on many vintage passenger cars.
For a 1926 Studebaker Standard, that matters because 31X5.25 should be treated as its own fitment standard rather than casually matched to a later-looking size code. It is best suited to cars retaining that older tire convention. Before ordering, check the wheel diameter and make sure the tire format already on the car agrees with the wheel and overall restoration setup.
Choosing the Right Tire
What should I consider when choosing a 525-21 tire for a 1926 Studebaker Standard?
Start with the basics: the car needs to be on 21-inch wheels, and the tire should remain a bias-ply choice in the correct 525-21 format. From there, the decision becomes more about sidewall appearance, tire series, and wheel-width compatibility than about changing construction type.
Available 525-21 products include Firestone and Excelsior offerings, with blackwall and wide whitewall presentations. Rim-width range can vary among products, so compare that against the wheel on the car before selecting a tire. For a restoration-minded owner, appearance may lead the decision; for a road-driven car, matching the tire to the actual wheel setup is just as important.
What sidewall styles are available for 1926 Studebaker Standard tires?
For the 525-21 size used on the 1926 Studebaker Standard, available sidewall styles include blackwall and wide whitewall. Those choices can change the visual character of the car quite a bit, especially on a vehicle from the late 1920s where tire appearance plays a large role in the finished look.
The right choice depends on the presentation you want. A blackwall usually gives a simpler, more understated look, while a wide whitewall creates a more formal restoration-oriented appearance. Sidewall style should still come after fitment confirmation, since a tire's visual appeal does not override the need to match the correct size and wheel specification.
What brands offer tires for the 1926 Studebaker Standard?
The 525-21 fitment for the 1926 Studebaker Standard is available from Firestone and Excelsior. Firestone options appear in the Firestone Classic Bias Ply series, while Excelsior is represented here by the Comp H series.
Brand choice should be viewed as one part of a larger comparison rather than the whole decision. It helps to look at sidewall style, series character, rim-width range, and the overall look you want on the car. Once the correct 525-21 fitment is confirmed, those details make it easier to choose a tire that suits the vehicle's restoration or driving purpose.
Restoration & Appearance
Which tire should I choose for a period-style 1926 Studebaker Standard?
A period-style 1926 Studebaker Standard should stay with the correct primary bias-ply size that matches the wheel setup on the car, whether that is 31X5.25 or 525-21. The most restoration-minded approach is to begin with the proper format and construction, then narrow the choice by sidewall appearance and series.
That matters because early tire sizing conventions are part of the vehicle's overall look. A car on 21-inch wheels may point you toward the available 525-21 offerings, where blackwall and wide whitewall choices create different visual results. If exact historical authenticity is the goal, compare the finished look against marque references or period photos before making a final decision.
Does correct tire fitment matter for a 1926 Studebaker Standard restoration?
Correct tire fitment matters a great deal on a 1926 Studebaker Standard because the tire size, construction type, and sidewall style all have a strong visual impact on the car. Early vehicles wear their tires prominently, so the wrong format or wheel pairing can look out of place even before road-use issues are considered.
Proper fitment also supports the restoration beyond appearance. The correct size helps the car sit as intended and keeps the wheel-and-tire combination true to its period character. Before settling on a tire, confirm the actual wheel diameter and compare the available sidewall treatments to the style of restoration you are pursuing rather than selecting only by brand or color.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1926 Studebaker Standard?
Yes, modifications can affect tire fitment on a 1926 Studebaker Standard, especially because early cars are often restored, re-wheeled, or updated over long periods of ownership. Changes to wheels, hubs, suspension components, ride height, or body clearance can all influence which tire size works with the car's present configuration.
That is why the current setup matters more than assumption. A Studebaker wearing non-original wheels may no longer match the tire format someone expects from the model year alone. Before mounting new tires, check wheel diameter, wheel width, steering clearance, and the space around fenders and suspension parts so the selected tire matches the car as it sits today.
What should I inspect before driving a 1926 Studebaker Standard on new tires?
Before driving a 1926 Studebaker Standard on new tires, inspect the wheels for condition, confirm the tire is seated correctly, and make sure inflation is appropriate for the tire being used. It also helps to look over the valve stems, lug hardware, and the general condition of the chassis and steering components.
An early collector car deserves a cautious shakedown even when the tires are fresh. Watch for rubbing during full steering travel, listen for unusual noises, and recheck pressure after the first short drive. A vehicle that has spent long periods parked should also be evaluated for brake, bearing, and suspension issues so new tires are not asked to compensate for unrelated problems.
How should tires on a collector 1926 Studebaker Standard be maintained?
Tires on a collector 1926 Studebaker Standard should be kept clean, properly inflated, and inspected regularly for cracking, cuts, bulges, uneven wear, and slow air loss. Because collector cars often see limited mileage, age and storage conditions can matter just as much as tread depth.
Good storage habits help preserve both appearance and serviceability. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources can reduce premature aging, and moving the vehicle occasionally can help avoid long-term flat spotting. A brief inspection before each outing is worthwhile on a low-use vintage car, even when the tires still look presentable at a glance.
