The 1931 Studebaker 6 Cyl. comes from an era when American cars balanced durability, style, and everyday road manners in a rapidly changing market. For collectors today, it sits firmly in the prewar world, where correct proportions and authentic tire presentation make a visible difference to the finished car. This Studebaker uses a 5.25-19 bias-ply tire, a traditional fitment that suits the vehicle’s period chassis and appearance. The choice is less about changing sizes and more about selecting the right period-style tire within that size. That makes wheel condition, restoration goals, and careful road-use inspection especially important before the car goes back into service.
Which Tire Size Is Right for The 1931 Studebaker 6 Cyl.
The 1931 Studebaker 6 Cyl. uses one primary tire size: 5.25-19. It is a bias-ply fitment for a 19-inch rim, and the same size carries across the covered Base sub-model. Once size is confirmed, the real decision is choosing a tire that matches the car’s restoration direction, driving expectations, and overall wheel condition rather than sorting through multiple primary fitments.
A 5.25-19 size is a vintage numeric bias-ply designation in which 5.25 refers to the tire’s nominal section width in inches and 19 identifies the rim diameter. For a 1931 Studebaker 6 Cyl., that means a traditional prewar-style tire construction rather than a modern metric radial format. Bias-ply construction is part of the period driving and visual character many restoration-minded owners want to preserve on a car of this age. Choosing this size starts with confirming the car still has the proper 19-inch wheels and then selecting a tire that suits the vehicle’s intended use and presentation.
Fitment is straightforward for the covered 1931 Studebaker 6 Cyl. sub-models. The main point is still worth checking, because confirming the exact sub-model and wheel setup helps ensure the 5.25-19 tire matches the car as it sits today.
1
1931 Studebaker 6 Cyl. Base
The 1931 Studebaker 6 Cyl. Base uses the 5.25-19 bias-ply tire size. That keeps tire selection focused on maintaining a traditional prewar look, confirming the 19-inch wheel fitment, and evaluating the condition of older rims before putting the car back on the road.
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.
Frequently Asked Questions
Owners of a 1931 Studebaker 6 Cyl. usually want clear answers on 5.25-19 fitment, 19-inch rim compatibility, period-style tire selection, restoration appearance, and the inspections that matter before a prewar car returns to regular road use.
Tire Size & Fitment
What tire size fits a 1931 Studebaker 6 Cyl.?
The 1931 Studebaker 6 Cyl. uses a 5.25-19 tire. That is a vintage numeric bias-ply size and it is the primary fitment for this vehicle, including the covered Base sub-model.
The key is confirming that the car still has the proper 19-inch wheels and has not been changed to a different wheel setup during its life. On a prewar vehicle, older restorations, replacement wheels, or long-term storage can affect what is actually on the car, so measuring the rim and checking the current tire markings is a smart first step.
What size rim does a 1931 Studebaker 6 Cyl. use?
The tire fitment for the 1931 Studebaker 6 Cyl. is built around a 19-inch rim. That rim diameter matches the 5.25-19 tire size, where the final number in the size code identifies the wheel diameter.
Rim diameter is only part of the check on an early car. Wheel condition, bead-seat integrity, and whether the wheels are original-style or later replacements all matter before mounting new tires. A 19-inch marking points you in the right direction, but the safest approach is still to inspect the wheels carefully and confirm the actual setup on the vehicle.
Does the 1931 Studebaker 6 Cyl. Base use the same tire size?
Yes. The covered 1931 Studebaker 6 Cyl. Base uses the same 5.25-19 bias-ply tire size as the model core. There is no separate primary size shown for that sub-model.
That makes the fitment decision fairly simple, but it does not remove the need to verify the car itself. Prewar vehicles are often restored, re-bodied, or updated over time, and wheel changes can happen long after the car left service. Matching the tire to the actual 19-inch wheel on the vehicle remains the practical step before choosing a replacement.
Choosing the Right Tire
What should I consider when choosing a 5.25-19 tire for a 1931 Studebaker 6 Cyl.?
Start with the correct size and construction. A 1931 Studebaker 6 Cyl. uses a 5.25-19 bias-ply tire, so the first priority is keeping the proper size range and a tire style that suits a prewar vehicle.
After size is settled, think about how the car will be used and presented. A vehicle built for shows may call for a stronger period-style appearance, while a car driven more regularly still needs the right vintage fitment with careful attention to wheel condition and overall setup. The best choice is the one that respects both the car’s age and the way it will actually be used.
How do I choose between the available 5.25-19 tires for a 1931 Studebaker 6 Cyl.?
The main comparison points are size accuracy, bias-ply construction, and overall appearance for the type of restoration or preservation work being done. On a 1931 Studebaker 6 Cyl., those factors usually matter more than chasing modern-style differences.
It helps to decide whether the car is meant to look as authentically prewar as possible or simply to wear a tire that presents properly on the correct wheel. Reviewing the wheel condition and intended road use will narrow the choice quickly. A sound 19-inch rim and a tire that visually suits the car are the essentials on a vehicle of this vintage.
What rim-fitment details should I compare when choosing 1931 Studebaker 6 Cyl. tires?
The most important detail is the 19-inch rim diameter required by the 5.25-19 tire size. On a 1931 Studebaker 6 Cyl., that confirms the tire and wheel are in the same basic fitment family.
Beyond diameter, inspect the actual wheel for age, damage, and any signs of previous repair or modification. Collector cars from this period may have older replacement rims or wheels that have sat unused for years. Looking closely at the rim’s condition before mounting fresh tires helps prevent problems that a simple tire-size match will not reveal.
Restoration & Appearance
Which tire should I choose for a period-style 1931 Studebaker 6 Cyl.?
A period-style 1931 Studebaker 6 Cyl. starts with the correct 5.25-19 size in bias-ply construction. That combination aligns with the vehicle’s prewar character and preserves the visual proportions expected on a car from 1931.
Exact originality can involve details beyond size alone, so owners pursuing a highly exact restoration should compare their tire choice against marque references, surviving examples, and restoration documentation for their specific car. For many collector vehicles, though, keeping the right size, the right construction type, and the right overall look is the foundation of a convincing result.
Does correct tire fitment matter for a 1931 Studebaker 6 Cyl. restoration?
Yes, tire fitment matters a great deal on a 1931 Studebaker 6 Cyl. because the tire has a strong effect on stance, wheel opening fill, and the overall visual balance of the car. Using the proper 5.25-19 bias-ply size helps preserve that prewar presentation.
Fitment also matters mechanically. A tire that does not match the wheel diameter or the vehicle’s intended setup can create needless mounting and clearance issues. On a restoration-oriented car, getting the size right is one of the simplest ways to support both appearance and usability without introducing an avoidable mismatch at the wheel and tire level.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1931 Studebaker 6 Cyl.?
Yes. Even though the primary fitment is 5.25-19, modifications can change what works on a 1931 Studebaker 6 Cyl. Replacement wheels, brake updates, suspension repairs, or body alterations may affect the usable tire and wheel setup.
That is why the current car matters more than assumptions based on model year alone. A Studebaker that has been restored decades ago or altered for touring may not still wear its original-style wheel arrangement. Checking wheel diameter, wheel condition, and available clearance at the fender and steering components should happen before any new tire is selected or mounted.
What should I inspect before driving a 1931 Studebaker 6 Cyl. on new tires?
Begin with the wheels, valve hardware, and the tires themselves. The 1931 Studebaker 6 Cyl. is a prewar vehicle, so it is especially important to look for rim damage, loose hardware, visible cracks, sidewall damage, air loss, and any sign that the wheel assembly is not ready for road use.
A broader inspection helps just as much as the tire check. Steering play, suspension wear, brake condition, and alignment all influence how an older car behaves once fresh tires are installed. A new set of tires cannot compensate for neglected chassis components, so the smartest approach is to inspect the full running gear before returning the car to regular driving.
How should 5.25-19 tires on a collector 1931 Studebaker 6 Cyl. be maintained?
Collector-car tires in 5.25-19 size should be kept properly inflated, inspected regularly, and protected from long periods of heat, sunlight, moisture, and ozone exposure. On a 1931 Studebaker 6 Cyl., routine visual checks are especially important because these cars often spend more time stored than driven.
Good maintenance also means watching for flat spotting after storage, checking for developing cracks or bulges, and keeping an eye on any persistent pressure loss. Taking the car out only occasionally can hide age-related problems until the next drive. Frequent inspections and careful storage habits do more for long-term road readiness than simply relying on tread depth alone.
