1931 Ruxton Tire Fitment Guide

1931 Ruxton vehicles are associated with two bias-ply tire sizes: 31X6.00 and 600-19. Both sizes apply to the 1931 Ruxton 8 Cyl., but they are not the same type of fitment because 31X6.00 is an antique diameter-by-section size while 600-19 is a numeric size that mounts on a 19-inch wheel. The 600-19 products offered for this application use a 19-inch rim diameter.

That means a 1931 Ruxton owner should confirm the wheel and the size already on the car before choosing a replacement. If your car is set up for 19-inch wheels, 600-19 is the relevant path; if it carries the larger antique diameter-by-section setup, 31X6.00 is the size to research. Checking the sidewall on the current tire and measuring the wheel at the bead seat is the best starting point.

On a 1931 Ruxton, 31X6.00 is an antique diameter-by-section tire size. The first number, 31, refers to the tire's overall outside diameter in inches, while 6.00 is the nominal section width. That differs from later sizing systems that lead with section width and end with wheel diameter, so it can look unfamiliar to modern buyers.

That format matters because it points to an early tire-sizing convention used on many pre-war vehicles. A Ruxton owner should not assume that 31X6.00 crosses directly to a 19-inch numeric size without checking the actual wheel and fitment intent on the car. If your goal is a historically correct restoration, staying within the proper antique-format size family is usually the safer approach.

On a 1931 Ruxton, 600-19 is a numeric bias-ply tire size. The 6.00 figure is the nominal section width in inches, and the 19 identifies the wheel diameter in inches. For this year and make, the available 600-19 product is a bias-ply tire with a traditional Wide Whitewall presentation.

That makes 600-19 easier for many collectors to recognize because the wheel diameter is built directly into the size code. If your Ruxton already wears 19-inch wheels, this is the fitment family to examine first. It is still worth checking the wheel carefully, since pre-war cars sometimes changed over time through restoration work, and the correct size depends on the wheel actually fitted today.

A 1931 Ruxton owner should choose between 31X6.00 and 600-19 by verifying which wheel and tire specification the car is built around, not by treating them as interchangeable alternatives. Both sizes are bias-ply, so the decision is not about switching from bias-ply to radial behavior. The key difference is fitment format and wheel compatibility, with 600-19 clearly tied to a 19-inch rim.

That means your first step is a physical confirmation of the wheel diameter and the size already fitted to the car. Owners preserving a historically correct pre-war setup often stay with the existing size family already established on the vehicle. Once the correct size is confirmed, you can make a cleaner choice around sidewall appearance and brand within that specific size rather than trying to force a cross-size substitution.

1931 Ruxton tire offerings in the currently listed range include a Wide Whitewall option in 600-19. Wide whitewalls are visually at home on many upscale pre-war American automobiles and can complement the dramatic styling character that makes the Ruxton memorable. Sidewall style can matter almost as much as size on a car where period appearance is part of the appeal.

For a restoration-minded owner, sidewall choice should match the look and judging standard you are aiming for. A Ruxton prepared for show display may call for stricter attention to period-correct sidewall treatment than a car used mainly for touring and casual events. If authenticity is a major priority, compare your intended tire against period photos, marque references, and the expectations of the event where the car will appear.

Lester currently appears in the available 1931 Ruxton product range, specifically in 600-19. That offering is part of a classic bias-ply line and uses a Wide Whitewall sidewall style. For pre-war applications like Ruxton, buyers often focus on whether the brand's available construction and appearance suit the era of the car.

Brand selection on a low-production luxury car is usually less about broad marketplace choice and more about finding the right combination of correct size, suitable sidewall look, and authentic overall character. Once you verify your Ruxton's actual size, compare what is available within that exact fitment rather than starting with brand preference alone. That approach avoids ending up with a tire that looks right in theory but does not match the wheel on the car.

1931 Ruxton tires should be matched to the wheel width approved for the exact tire you plan to run, but the crucial fitment split here is wheel diameter rather than a shared rim specification across both sizes. The 600-19 size mounts on a 19-inch wheel, while 31X6.00 belongs to a different antique sizing convention and should be paired only with the wheel intended for that size family.

That makes wheel measurement an important part of setup on any Ruxton, especially one that has passed through multiple restorations. Before mounting new tires, verify the wheel diameter at the bead seat and compare the wheel width to the manufacturer's fitment guidance for the specific tire selected. Pre-war cars can vary in what is fitted today, so a careful wheel check is smarter than relying on assumption.

1931 Ruxton tires should be treated as tube-type fitments unless the specific tire and wheel combination clearly states otherwise for the product you are using. Pre-war bias-ply applications of this kind commonly rely on tubes, and tube requirements can depend on both the tire's sidewall marking and the construction of the original-style wheel. The exact requirement should be confirmed on the tire you select.

That means a Ruxton owner should inspect the wheel condition, valve stem arrangement, and the tire's sidewall designation before final assembly. If your car uses older-style rims or wooden artillery or steel wheels restored to original patterns, tube choice becomes part of the fitment plan rather than an afterthought. A fresh tube and flap, when appropriate, can help prevent avoidable issues during mounting and road use.

A 1931 Ruxton should be stored in a cool, dry, dark space away from direct sunlight, electric motors, welders, furnaces, and other ozone-producing equipment that can age rubber. Bias-ply tires are especially prone to developing flat-spotting when they sit in one position for long periods. Clean floors, stable temperatures, and proper inflation all help reduce stress on the tire casing during storage.

For a collector car that is not driven often, move the Ruxton periodically or place it on stands if it will sit for an extended season. If you keep it on the ground, roll it a short distance from time to time so the same section of tread is not carrying the load month after month. Tire covers and a clean, dry garage environment can make a noticeable difference in long-term appearance and service life.

Tires on a 1931 Ruxton should be judged more by age, condition, and storage history than by mileage. On collector vehicles, many owners begin evaluating tires closely once they are around five to seven years old, and replacement becomes a serious consideration as they approach ten years, even if the tread still looks usable. The DOT date code and the tire's overall condition should guide that decision.

That approach matters because a low-use pre-war car may wear out very little tread while the rubber still hardens with time. If the Ruxton sees occasional tours, age-related changes can show up as cracking, stiffness, or reduced confidence on the road long before the tread is gone. Regular age checks are one of the simplest ways to avoid trusting a tire that looks presentable but is no longer at its best.

Tires on a 1931 Ruxton should be inspected before every drive and again before any longer outing or show tour. Look for sidewall cracking, tread separation, cuts, bulges, irregular wear, and signs that the tire is losing air. On tube-type setups, valve stems and any hardware associated with the tube arrangement also deserve close attention.

That routine is especially important on a car driven infrequently, because age and storage can affect tires even when the Ruxton is not covering many miles. A quick visual check in the garage is useful, but a hands-on inspection with pressure verification is better. Catching a stem issue, sidewall crack, or slow leak before a long drive is far easier than dealing with it on the roadside.

The 1931 Ruxton 8 Cyl. would have been fitted in the bias-ply era, so bias-ply construction is the historically appropriate starting point for an original-style restoration. For 1931 Ruxton applications, the size families associated with the car are 31X6.00 and 600-19. Original-equipment branding could vary by market practice, dealer handling, and period availability, so size and construction should be confirmed before chasing brand-level detail.

That means a restoration should begin with the car's existing wheels, surviving factory literature, and marque-club knowledge rather than assumptions carried over from another pre-war make. A Ruxton is uncommon enough that prior restoration choices may have shaped what is on the car today. If you are preparing for judged competition, confirm not only the size family but also the sidewall treatment expected for your intended presentation standard.

Correct tire fitment matters a great deal when showing a 1931 Ruxton because judges and knowledgeable enthusiasts often notice size family, construction type, and sidewall appearance immediately. On a rare pre-war luxury car, an obviously modern-looking tire or an incorrect visual profile can distract from an otherwise careful restoration. Bias-ply construction is generally the expected look for a 1931 American car of this class.

That does not mean every event uses identical standards, but it does mean tire choice should support the era and character of the car. For a Ruxton headed to concours-style judging, confirm that the size, stance, and sidewall treatment align with accepted restoration practice. Marque clubs, period photographs, and event rulebooks are the right references when authenticity matters as much as drivability.

On a 1931 Ruxton, tire appearance and tire correctness overlap but are not exactly the same. Appearance covers the visual effect of the sidewall, profile, and stance, while correctness also includes whether the size format and construction type belong on the car for its period. A tire can look suitably vintage at a glance yet still miss the mark if its dimensions or overall presentation are not appropriate for a 1931 pre-war application.

That distinction matters because the Ruxton is a design-forward automobile whose proportions are part of its identity. A sidewall style that flatters the car visually may still need to be checked against restoration goals and event expectations. If your target is authenticity, choose the correct size family first and treat appearance details as the finishing step, not the other way around.

1931 Ruxton tires can be suitable for road use when they are the correct size, in sound condition, properly inflated, and matched to the wheel they are designed for. The sizes associated with the Ruxton are bias-ply fitments, so owners should expect vintage-style behavior rather than modern radial feel. On a pre-war automobile, the overall condition of the braking system, steering, suspension, and wheel components is often just as important to highway confidence as the tires themselves.

That means road safety starts with realistic expectations and a fully sorted car. A Ruxton prepared carefully for touring can be enjoyable on modern roads, but it should be driven within the limits of its era and equipment. Tire age, storage history, and condition matter far more than simply seeing usable tread, so inspect the tires closely before relying on them for sustained higher-speed use.

Inflation pressure for 1931 Ruxton tires should be matched to the exact size and product you are using, then checked against the vehicle's original literature or established marque guidance. The available 600-19 listing does not replace the need for a tire-specific pressure decision tied to that actual product and wheel setup. Pre-war cars can be sensitive to inflation because tire shape and load distribution affect steering feel and ride quality noticeably.

The practical approach is to begin with the tire manufacturer's rated guidance for the exact tire, then compare that with the pressure range traditionally used on the Ruxton's original-style fitment. Avoid copying a pressure from another collector car or transferring a figure from one Ruxton size family to the other. Once inflated, recheck pressure regularly, because an infrequently driven car can lose air slowly without attracting attention.

Before a longer drive in a 1931 Ruxton, inspect every tire for cracking, cuts, bulges, embedded objects, and uneven wear, then confirm cold pressure and the condition of the valve stems. If the car uses a tube-type setup, include the spare in your inspection and make sure its tube-related hardware is sound as well. A pre-war touring check should also include wheel fasteners, brakes, steering play, fluid levels, and basic electrical reliability.

That kind of walk-around is especially worthwhile on a rare car like the Ruxton, where roadside parts support is limited and prevention is far easier than repair. Pay attention to anything that has changed since the last outing, including a tire that looks slightly lower or a sidewall that has developed new weathering. A careful pre-drive inspection makes longer trips more enjoyable and greatly reduces avoidable trouble.