1927 Stutz Tire Fitment Guide

1927 Stutz vehicles covered here use two sizes: 32X6.20 and 650-20, and both apply to the 1927 Stutz 8 Cyl. model. Both sizes are bias-ply fitments built around a 20-inch rim diameter. The listed rim-width range appears with the 650-20 products and runs from 3.00 to 5.00 inches on the Firestone examples, which gives a useful benchmark when checking an existing wheel.

That means a 1927 Stutz owner usually is not choosing between different model-specific wheel diameters so much as confirming which period designation belongs on the car. If your wheel and restoration references align with 650-20, current product choices are straightforward. If your car is identified by the older 32X6.20 marking, it is wise to compare that designation against the actual wheel and known vehicle history before moving ahead.

On a 1927 Stutz tire, 32X6.20 is an antique diameter-by-section size. The first number refers to the tire's approximate overall diameter, while the second number identifies its nominal section width. It is a period-style bias-ply designation used before later sizing conventions became more familiar, and on this application it corresponds to a tire that fits a 20-inch wheel.

That older style of sizing can look unfamiliar to modern buyers because it does not lead with the rim diameter the way many later tire codes do. For a Stutz owner, the important takeaway is that 32X6.20 is part of the car's correct era language and should be evaluated alongside your wheel diameter, your car's existing fitment, and the look you want to preserve in a restoration.

On a 1927 Stutz tire, 650-20 is a numeric bias-ply size. The 650 portion indicates nominal section width in the older numeric system, and the 20 identifies the rim diameter in inches. For the 1927 Stutz 8 Cyl., this is the size designation tied to the listed currently available products from Firestone, Denman, and Deka.

A 1927 Stutz owner will usually encounter 650-20 as the more practical shopping designation, even when an older reference on the car points to an antique-style marking. It is still a period-type bias-ply fitment, so the decision is not about switching to a modern radial construction. It is about matching the right traditional size code to the wheel and the restoration direction of the car.

A 1927 Stutz owner choosing between 32X6.20 and 650-20 is deciding between two period bias-ply size designations used on the same 8 Cyl. application, not between bias-ply and radial construction. Both sizes are built around a 20-inch rim diameter. The practical difference is usually whether your car's existing wheel setup, restoration research, or sidewall markings point toward the antique 32X6.20 designation or the more commonly marketed 650-20 size.

That makes the choice more about authenticity, continuity, and ease of matching than about changing the basic character of the car. If you want to stay close to a known older marking, 32X6.20 may be the direction your project follows. If you want access to the listed current product range, 650-20 is the more direct path. Comparing your current tires, wheel dimensions, and marque-specific references is the best next step.

1927 Stutz tire options in the listed 650-20 size include both Blackwall and Wide Whitewall styles. Firestone offers both a Blackwall version and a 3.75-inch Wide Whitewall, while the Denman and Deka choices are Blackwall. All of the listed choices are bias-ply, so the visible difference here is primarily the sidewall presentation rather than a change in overall construction type.

That gives a Stutz owner room to tune the car's appearance to its intended finish. A Blackwall usually suits a more restrained or utilitarian visual theme, while a Wide Whitewall creates a more formal, high-style look often favored on restored luxury-era automobiles. If originality for a specific body style or judging venue matters, compare your intended sidewall treatment against period photos and the standards used by the event or marque group.

Three brands appear in the available 1927 Stutz offerings for 650-20: Firestone, Denman, and Deka. Firestone includes both Blackwall and Wide Whitewall versions in a classic bias-ply series, while Denman and Deka are represented by Blackwall bias-ply tires with a truck-oriented character. All of them stay within the traditional bias-ply construction that suits a car of this era.

Brand choice on a 1927 Stutz often comes down to the look you want and the role the car plays. An owner focused on a more formal presentation may lean toward the whitewall option, while someone aiming for a simpler blackwall appearance has multiple directions to consider. Because these are all period-style constructions, it is smart to compare sidewall style, rated load information where shown, and wheel compatibility before making a final selection.

For 1927 Stutz vehicles, the listed 650-20 products include a rim-width range of 3.00 to 5.00 inches on the Firestone examples. Those same products use a 20-inch rim diameter. The 32X6.20 fitment shares that 20-inch diameter, but the key setup point still is confirming the actual wheel on the car before matching any reproduction tire to it.

Rim width matters because even when the diameter is correct, the wheel still has to support the tire within the manufacturer's approved range. On a nearly century-old automobile such as a Stutz, wheel changes over time are common, especially on restored or rebodied cars. Measuring the wheel and comparing it with the approved range is a better approach than assuming the current tire code tells the whole story.

The listed 1927 Stutz products do not carry TT or TL markings in the size field, so the product names here do not separate tube-type and tubeless versions by code. On a 1927 Stutz, however, period 20-inch wooden or early steel wheel applications are normally approached as tube-type service unless the specific wheel and tire construction clearly indicate otherwise. That remains the traditional setup for many collector cars from the late 1920s.

A Stutz owner should confirm the actual wheel design, valve-stem arrangement, and the tire manufacturer's mounting guidance before final assembly. Tube selection also needs to match the tire size and the stem type required by the wheel. If your car has been restored or modified over the years, do not assume the previous setup was correct simply because it held air.

The original-style 1927 Stutz wheels can often be used with both listed tire sizes because 32X6.20 and 650-20 share a 20-inch rim diameter. That common diameter is the main reason these two size conventions appear on the same 8 Cyl. application. Diameter compatibility, however, is only one part of the fitment picture on a car of this age.

Wheel width, condition, and exact profile still need to be confirmed before fitting either size. A wheel that has seen decades of use, repair, or restoration work may no longer match assumptions made from a catalog size alone. If your Stutz has original or early replacement rims, careful measurement and inspection are worthwhile before mounting expensive reproduction tires.

A 1927 Stutz should be stored in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment that can age rubber. Keep the tires properly inflated, avoid standing water or damp floors, and move the car periodically so one section of the bias-ply casing is not carrying the load for months at a time. Long static storage can encourage flat-spotting on bias-ply tires more readily than many modern drivers expect.

Collectors who store a Stutz for an entire season often place the car on stands or reposition it occasionally to reduce stress on the tires. That does not replace normal pressure checks, but it helps preserve shape and appearance. If the car wears whitewalls, routine cleaning and keeping the tires out of strong UV exposure also helps the sidewalls maintain a better presentation over time.

Tires on a 1927 Stutz should be judged more by age and condition than by miles driven. A collector tire often deserves close evaluation once it reaches five to seven years of service, and many owners treat ten years as a point where replacement deserves serious consideration regardless of remaining tread. The DOT date code, overall rubber condition, sidewall integrity, and how the car has been stored all matter more than odometer use.

That age-based approach is especially important on a low-mileage Full Classic because the car may look mechanically fresh while the tires have quietly hardened. Bias-ply tires can spend much of their lives parked, and that kind of use does not stop rubber aging. If your Stutz is taken on tours or longer event drives, erring on the side of fresher tires is usually wiser than relying on tread depth alone.

Tires on a 1927 Stutz should be inspected before every drive and again before any longer outing. Look for sidewall cracking, cuts, tread separation, bulges, uneven wear, and pressure loss, and check the spare as carefully as the tires on the ground. On an older car, valve stems and any tube-related hardware deserve attention as well because slow air loss can begin there rather than through the casing itself.

Short local drives can hide tire problems that only become obvious once speed, heat, and distance increase. A pre-drive walkaround takes only a few minutes and often tells you whether the car is ready for a tour, parade, or event field. If one tire shows a change in shape or persistent pressure drop, investigate it before driving rather than hoping it will settle out on the road.

A 1927 Stutz 8 Cyl. would have been fitted in period with bias-ply tires, not radial construction, because bias-ply was the standard passenger-car tire type of the era. The two relevant size conventions here are 32X6.20 and 650-20, both tied to the same 20-inch wheel diameter. Original-equipment branding could vary by market, dealer practice, and surviving restoration evidence, so the main authenticity anchor is usually the correct size convention, construction type, and sidewall appearance.

For a serious restoration, that means starting with a bias-ply casing in the right period size language and then refining the sidewall style to suit the car's body and presentation. If your Stutz has a known ownership history, period photographs, or judged-show ambitions, compare those clues with marque-club guidance before choosing between blackwall and whitewall presentation. That extra step often matters more than chasing a brand name alone.

Correct tire fitment matters on a 1927 Stutz because judged antique and Full Classic presentations often consider overall size, construction type, and sidewall appearance as part of the car's authenticity. A modern-looking construction, an obviously mismatched sidewall treatment, or a size that changes the car's visual proportions can draw attention even if the tire physically mounts. On a marquee as prestigious as Stutz, those details affect how complete the restoration appears.

A car built for touring may accept a more flexible interpretation than one prepared for high-level judging, but the owner should decide that up front. If the car is meant for concours use, compare the chosen size designation and whitewall or blackwall treatment against period imagery and event-specific rules. Marque clubs and judging manuals are the right places to settle fine points that go beyond simple diameter and width.

On the 1927 Stutz in 650-20, the listed Firestone options include both Blackwall and 3.75-inch Wide Whitewall versions, and the Blackwall and whitewall Firestones also show a maximum load of 2120 pounds at 60 psi. The Firestone whitewall is listed at 33 pounds, while the Firestone blackwall is listed at 28 pounds. The Denman 650-20 Highway is a Blackwall bias-ply tire listed at 32 pounds and is presented in a truck-oriented series rather than a whitewall passenger-style offering.

That makes the comparison less about fitment and more about appearance and product character. A Stutz owner who wants a formal whitewall presentation will naturally focus on the Firestone whitewall, while a blackwall restoration or touring setup has broader flexibility. Since all remain bias-ply 20-inch tires, use the wheel dimensions, desired sidewall look, and any published load information as the main deciding points.

1927 Stutz tires in the listed sizes are traditional bias-ply tires, and no speed ratings are shown for the available products here. That means highway use should be approached with the broader realities of a late-1920s automobile in mind: braking, steering response, suspension design, wheel condition, and the age of the car itself matter just as much as the tires. A sound bias-ply tire in the correct size can be used on public roads, but it should be driven within the limits of the vehicle and the tire.

For most owners, that translates into moderate speeds, smooth inputs, and careful planning rather than treating a Stutz like a modern freeway car. Before any sustained highway run, make sure pressures are correct, the tires are fresh enough for the intended use, and the entire chassis has been inspected. The car's mechanical preparedness is often the deciding factor in whether a longer road drive is wise.

Inflation pressure for 1927 Stutz tires should begin with the vehicle's original guidance if it is available, then be checked against the tire manufacturer's specifications for the exact reproduction tire you are using. Among the listed 650-20 products, certain Firestone versions show a maximum load of 2120 pounds at 60 psi. That figure is a load-and-pressure rating for the tire itself, not a universal instruction to run every 1927 Stutz tire at 60 psi in service.

A collector car's actual operating pressure depends on the car, the tire, and how the vehicle is being used. Running every vintage tire at the sidewall maximum can produce a harsh ride or an incorrect footprint, while underinflation can overwork the casing. Match the pressure to the exact size and tire chosen, and do not transfer a figure from one product or size designation to another without confirming it first.

Before taking a 1927 Stutz on a longer drive, inspect each tire for cracking, exposed fabric, cuts, bulges, irregular wear, and proper inflation, and do not forget the spare. Check the valve stems and any tube-related hardware for leakage or age issues, especially if the car has been sitting. On a vehicle from 1927, tire readiness is only part of the picture, so brakes, wheel bearings, steering play, and cooling system condition also deserve attention.

A longer drive puts heat and continuous load into every part of the car, and weak points that stay hidden on a short local outing often show up quickly once miles accumulate. Taking a few minutes to verify the tires and the broader running gear can prevent a roadside problem and protect parts that are expensive or difficult to replace. It is also wise to confirm that your jack and spare arrangement still work with the wheels on the car.