Wills, Sainte Claire 8 Cyl. Tires

Wills Sainte Claire 8 Cyl. automobiles were premium American cars from the mid-1920s, built during a period when engineering ambition and luxury touring design still carried strong prewar character. Produced here for 1926 through 1927, the Wills Sainte Claire 8 Cyl. sits in an era when tire sizing was not yet fully standardized, so modern buyers often encounter more than one correct-looking designation for the same car. That is exactly the challenge with this model, which appears with both an antique diameter-by-section size and a later numeric size while remaining on the same wheel diameter. The first step is to confirm which size convention matches the car's existing wheels and restoration goals.

Wills, Sainte Claire 8 Cyl. Tire Size Guide

Wills Sainte Claire 8 Cyl. fitments in 1926 to 1927 use 2 distinct tire sizes, and both stay on a 20-inch rim diameter. One of those sizes uses the antique diameter-by-section format, where the leading number is the tire's outside diameter rather than the wheel diameter. That is why two different-looking size codes can apply to the same model years without indicating a wheel change.

32X6.201926-1927Antique diameter-by-section

32X6.20 is an antique-format size used on 1926 and 1927 Wills Sainte Claire 8 Cyl. applications. In this code, 32 is the overall tire diameter in inches and 6.20 is the nominal section width, while the matching rim diameter is 20 inches rather than 32 inches. Choose 32X6.20 when you are preserving the earlier size convention used on the car, and verify the actual wheel before matching it to a modern replacement; a tube is required.

650-201926-1927Numeric bias-ply

650-20 is a numeric bias-ply size also used on 1926 and 1927 Wills Sainte Claire 8 Cyl. applications. In this code, 650 indicates a nominal 6.50-inch section width and 20 is the rim diameter in inches. Choose 650-20 when your car is already set up for that later numeric designation or when you want one of the currently listed replacement options; a tube is required.

Wills, Sainte Claire 8 Cyl. Tires by Year

The year listing breaks out the tire sizes used on each 1926 and 1927 Wills Sainte Claire 8 Cyl. entry so you can match the car by production year first. The leading number in 32X6.20 is the tire's outside diameter, not the wheel size, so both listed sizes still point to a 20-inch rim. These listings cover a short prewar production run, so it is wise to confirm the car against original vehicle literature or a marque specialist.

Best Wills, Sainte Claire 8 Cyl. Tires for Sale

Available Wills Sainte Claire 8 Cyl. tires cover 2 sizes across 6 products from 3 brands. Options include both passenger-car and truck-style bias-ply offerings, so confirm the correct size and 20-inch rim diameter before selecting.

650-20 Products

These are the available products for 650-20.

Bias Ply

Firestone 3.75 Inch Whitewall | 650-20 (32x6)

Firestone - Firestone Classic Bias Ply

SidewallWide Whitewall
Rim Diameter20 in
Rim Width3.00 - 5.00 in
Weight33 lb
Max Load2120@60 psi
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Bias Ply

Firestone | 650-20

Firestone - Firestone Classic Bias Ply

SidewallBlackwall
Rim Diameter20 in
Rim Width3.00 - 5.00 in
Weight28 lb
Max Load2120@60 psi
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Military & Truck

650-20 DENMAN HIGHWAY

Denman - Highway Classic Truck

SidewallBlackwall
Rim Diameter20 in
Rim Width—
Weight32 lb
Max Load—
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Military & Truck

Deka | 650-20

Deka - Deka Classic Truck

SidewallBlackwall
Rim Diameter20 in
Rim Width—
Weight32 lb
Max Load—
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Military & Truck

600-20 DENMAN HIGHWAY

Denman - Highway Classic Truck

SidewallBlackwall
Rim Diameter20 in
Rim Width—
Weight30 lb
Max Load—
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Military & Truck

Firestone | Truck Tread | 650-20

Firestone - Firestone Classic Truck

SidewallBlackwall
Rim Diameter20 in
Rim Width—
Weight32 lb
Max Load2,120 @ 60 PSI
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Frequently Asked Questions

The FAQ below focuses on the two size systems used on the Wills Sainte Claire 8 Cyl., how to confirm the correct 20-inch fitment, and how to choose among the bias-ply passenger and truck-style tires listed for this model.

Size Basics & Fitment

The Wills Sainte Claire 8 Cyl. uses two tire sizes across the 1926 and 1927 model years: 32X6.20 and 650-20. Both sizes correspond to a 20-inch rim diameter on the products listed for this application, even though the codes look very different. The 32X6.20 format is an older diameter-by-section designation, while 650-20 is a numeric bias-ply size.

That means the correct choice starts with identifying which size system your car is set up to use, not assuming the first number is always the wheel diameter. Check the tire currently on the car, verify the wheel itself, and compare that with your restoration goal before choosing between the antique-style designation and the numeric replacement size.

On a Wills Sainte Claire 8 Cyl., 32X6.20 is an antique diameter-by-section tire size. The 32 refers to the tire's overall outside diameter in inches, and 6.20 refers to the nominal section width. It does not mean the tire fits a 32-inch wheel; the listed replacement products for this application use a 20-inch rim diameter.

That distinction matters because antique tire codes can easily be misread by modern buyers. If your Wills Sainte Claire 8 Cyl. still carries early-style sizing references, verify the wheel diameter physically and treat the antique size code as a guide to tire profile and stature rather than as a direct wheel measurement.

The listed Wills Sainte Claire 8 Cyl. tire applications here use a 20-inch rim diameter. That applies to the 650-20 numeric size directly, and it also applies to the 32X6.20 antique-format size even though the leading 32 is the tire's overall diameter rather than the wheel size. There is no wheel-diameter change between the 1926 and 1927 entries shown here.

For a buyer, that means the wheel itself is the key measurement to confirm before narrowing down tread style or sidewall preference. If the car has been restored, re-wheeled, or adapted over the years, inspect the actual rim and compare it with the tire size convention you intend to run.

Yes, the Wills Sainte Claire 8 Cyl. sizes listed here should be treated as tube-type applications. The available products are bias-ply tires in antique or numeric prewar formats, and those constructions normally require tubes in period-style wheels. Nothing in the listed fitments points to a modern tubeless radial setup for this model.

That affects more than installation. Tube condition, flap use where appropriate, and wheel-surface condition all matter on a low-volume collector car of this age, so tube service should be handled with the same care as the tire choice itself, especially if the car is intended for touring rather than static display.

Buying the Right Tire

A 1926 Wills Sainte Claire 8 Cyl. can correctly appear with either 32X6.20 or 650-20, and both sizes are listed for that year. The practical difference is the sizing system: one is an antique diameter-by-section designation and the other is a numeric bias-ply designation, but both relate to a 20-inch rim. The year alone does not separate them.

Start with the wheel diameter, then compare the tire marking currently on the car, the look you want, and any original literature that came with the vehicle. If the car has gone through restoration work over the decades, the existing wheel and tire setup often gives the clearest clue as to which of the two listed sizes belongs on that particular example.

The listed Wills Sainte Claire 8 Cyl. products in 650-20 include both blackwall and wide whitewall sidewall styles. Firestone offers both blackwall and a 3.75-inch whitewall version, while the truck-oriented Denman, Deka, and Firestone truck-tread options shown here are blackwall. That gives buyers a choice between a more formal passenger-car appearance and a more utilitarian commercial look.

Sidewall style should follow the way the car is being restored and presented. A luxury prewar car often looks more at home on a passenger-style sidewall treatment, while a truck-style blackwall changes the visual character substantially, so choose the sidewall with the same care you apply to the size designation itself.

The brands listed for Wills Sainte Claire 8 Cyl. tires here are Firestone, Denman, and Deka. Firestone appears in both passenger and truck-style offerings within 650-20, while Denman and Deka appear in truck-oriented bias-ply options for the same size. That gives the model a broader selection than many short-production prewar cars receive.

Brand choice should come after fitment is settled. Once the correct size and intended visual style are confirmed, compare passenger versus truck-oriented construction, sidewall treatment, and overall restoration goals so the finished car looks and drives in a way that suits its age and character.

The Wills Sainte Claire 8 Cyl. products shown here include Firestone Classic Bias Ply, Highway Classic Truck, Deka Classic Truck, and Firestone Classic Truck series. The distinction is chiefly between passenger-car bias-ply construction and truck-style bias-ply construction, with the Firestone Classic Bias Ply line also offering a wide whitewall option. All of the listed products remain bias-ply and 20-inch fitments.

That means the series choice is less about modern versus vintage construction and more about the intended character of the finished car. A passenger series usually makes the most sense for an upscale prewar automobile, while truck series should be chosen carefully and only when their tread style, load intent, and appearance align with your specific use case.

Maintenance & Longevity

A Wills Sainte Claire 8 Cyl. should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, ozone sources, and standing moisture. On a seldom-driven prewar car, long stationary periods can stress both casing and tube, especially with bias-ply construction. Clean the tires gently and keep oil, solvents, and battery fumes away from the rubber.

If the car will sit for an extended time, move it periodically or support it in a way that reduces prolonged flat spotting and concentrated load on one section of the tire. Collector cars benefit from regular visual checks even in storage, because age-related cracking and tube issues can develop long before tread wear becomes a concern.

Tires on a Wills Sainte Claire 8 Cyl. should be inspected before each drive and given a closer condition review several times during the year, even if the car sees only occasional mileage. Bias-ply collector tires on a prewar car deserve special attention for sidewall cracking, tread separation, irregular shape, valve condition, and any sign of tube-related air loss.

Short local drives do not reduce the need for inspection on an older automobile. Because these cars are used infrequently and often carry more age than mileage, visual condition and inflation stability matter more than tread depth alone, so a routine inspection habit is one of the simplest ways to avoid preventable roadside trouble.

Tires on a Wills Sainte Claire 8 Cyl. should be replaced when age, cracking, hardening, persistent air loss, structural irregularity, or any sign of casing distress appears, even if the tread still looks deep. On a prewar collector car, time usually overtakes mileage. Tube condition should also be considered, since a failing tube can make an otherwise usable-looking tire unsuitable for road use.

That principle is especially important on cars that spend years in storage or attend only occasional events. A tire can look attractive from a few feet away and still be unfit for service, so replacement decisions on antique-style fitments should follow condition and age awareness rather than appearance alone.

Restoration & Authenticity

The Wills Sainte Claire 8 Cyl. appears here with two period-correct size designations for 1926 and 1927: 32X6.20 and 650-20. Those codes reflect the kind of transition seen in prewar tire nomenclature, where an older diameter-by-section convention and a numeric size could both be associated with the same model years. The available products shown here do not identify a factory-original brand.

For restoration work, the safest approach is to use the listed sizes as a fitment starting point and then match the final choice to original owner literature, period photographs, or marque-club guidance. That helps determine whether the car should present with the earlier naming convention, a later service-replacement size, or a specific sidewall treatment.

Yes, correct tire fitment can materially affect how a Wills Sainte Claire 8 Cyl. is viewed in restoration judging and by knowledgeable collectors. Size designation, sidewall style, and overall tire profile all influence whether the car presents as an authentic prewar automobile rather than simply a drivable antique. On a rare make, small visual details often carry extra weight.

That does not always mean there is only one acceptable answer, especially when period size systems overlap as they do here. The most persuasive restoration usually comes from choosing a tire that matches the car's year, wheel setup, and restoration philosophy, then being able to support that choice with period references or marque-specialist input.

The listed Wills Sainte Claire 8 Cyl. products include both blackwall and wide whitewall options in 650-20. Either can shape the car's final appearance very differently, with blackwall reading more restrained and utilitarian while a wide whitewall gives a more formal, luxury-oriented prewar presentation. The available truck-style offerings shown here are blackwall only.

For restoration purposes, sidewall choice should follow the way the specific car is being interpreted rather than personal preference alone. A high-end prewar automobile often benefits visually from a passenger-style tire and sidewall treatment, while a truck-style blackwall may suit only a particular look or service-history theme.

Safety & Road Use

A properly fitted bias-ply tire in the correct size can be suitable for limited public-road use on a Wills Sainte Claire 8 Cyl., provided the entire car is mechanically sound and the tires are in verified serviceable condition. This is still a 1920s automobile with period-style handling, braking, and steering expectations. Tire choice is only one part of the safety picture.

Road use should match the car's age and purpose. Keep speeds moderate, avoid aggressive modern-traffic driving, and remember that a prewar car on tall bias-ply tires will not respond like a later radial-equipped vehicle, even when the tires themselves are correctly chosen and maintained.

Before driving a Wills Sainte Claire 8 Cyl., check tire inflation, visible sidewall condition, tread integrity, valve stems, and overall roundness, then confirm that the car is actually wearing one of the correct 20-inch tire sizes for its wheel setup. Because these are tube-type bias-ply applications, a slow leak or wheel issue can matter as much as visible tread condition.

The pre-drive routine should also include the rest of the chassis and braking system, since antique cars place more demand on planning and mechanical sympathy than modern vehicles do. A short visual inspection before every outing is far easier than dealing with a roadside problem in a heavy, nearly century-old automobile.

A Wills Sainte Claire 8 Cyl. should be driven at conservative speeds that respect both the age of the car and the behavior of bias-ply tires. Even when the correct size is fitted, the chassis, steering geometry, braking capability, and tire construction belong to a very different motoring era than current highway traffic. Smooth, moderate touring is the right mindset.

In practice, speed should be set by road conditions, mechanical condition, and driver experience rather than by any theoretical capability of the tire alone. If the car is newly restored or newly fitted with tires, begin with short, measured drives and build confidence only after the vehicle proves stable, predictable, and well sorted.