De Soto 6SG Tires

The listed tire size for the De Soto 6SG is 650-16, used for the 1935 model year. All available products tied to that fitment use a 16-inch rim diameter, and most fall into traditional bias-ply passenger-car construction, though heavier-duty truck and military-type tires also appear in the same nominal size.

That means the first fitment check is straightforward: verify that your De Soto 6SG still wears 16-inch wheels. After that, choose the tire type that matches the car’s intended role, with classic passenger-car tread and sidewall styles generally making the most sense for a restored road car and truck-pattern tires better suited to special-use needs.

On a De Soto 6SG, 650-16 is a numeric bias-ply size. The 6.50 identifies the tire’s nominal section width in inches, while the 16 identifies the wheel diameter in inches. In the products available for this size, 16-inch rims are standard, with many listings built around rim widths in the 4.50 to 5.00 inch range.

For a buyer, the practical takeaway is that 650-16 is not a modern metric size and should be matched to the proper vintage wheel. If your De Soto 6SG has replacement wheels, measure the rim carefully before selecting a tire, because numeric prewar sizes depend on both the correct diameter and a wheel width that suits the tire’s designed profile.

The De Soto 6SG uses a 16-inch rim diameter in the available fitment listings for 1935. Every tire product attached to the 650-16 size is built around that 16-inch wheel diameter, even though rim width can vary slightly by product series.

That makes wheel diameter the key measurement to confirm on the car itself, especially if the wheels may have been swapped during an older restoration. Once 16-inch wheels are confirmed, compare the tire’s recommended rim width to your actual wheel so the finished fit preserves the proper stance, tread profile, and steering behavior expected from a prewar De Soto 6SG.

Most De Soto 6SG tire choices in 650-16 are bias-ply designs, and a tube is required for those traditional applications. The one exception in the available listings is a bias-ply 6 ply rated tubeless highway tire, which is a specialty-duty product rather than the typical period-style passenger-car choice.

For a standard restoration or normal collector use, plan on fitting tubes with the passenger-car bias-ply tires. Tube condition matters as much as tire condition on a low-use prewar car, so replacing aged tubes when new tires are installed is a sensible step for reliability, air retention, and avoiding problems that can be blamed on the tire when the tube is actually at fault.

A 1935 De Soto 6SG is matched here to one tire size: 650-16. Confirming that fitment starts with the wheel itself, since all listed products for the De Soto 6SG use a 16-inch rim diameter. The next step is checking whether the car is being restored as a period passenger car or adapted for a different kind of use.

If originality is the goal, compare your wheel and any surviving factory literature, restoration records, or marque references against the tire size and sidewall style you intend to use. If the car has replacement wheels or mixed hardware from an older rebuild, inspect every wheel individually so the tire you choose matches the car’s actual configuration rather than assumptions built around the model year alone.

De Soto 6SG tires in 650-16 are available in both blackwall and wide whitewall styles. The wide whitewall offerings include several different whitewall widths, while blackwall choices appear in both passenger-car and heavier-duty tread families.

That gives a restorer room to tune the finished look of a 1935 De Soto 6SG. A blackwall usually suits a more restrained factory-style presentation, while a wide whitewall can emphasize the formal prewar appearance many owners want; the right choice depends on how the car is being restored and the visual character you want the finished car to project.

The available De Soto 6SG tire brands in 650-16 include BFGoodrich, Coker Classic, Firestone, Garfield, Excelsior, Lester, Goodyear, STA, and Tornel. Those brands cover both traditional passenger-car bias-ply products and heavier-duty truck-oriented tires sold in the same size.

Brand choice is best made after you decide on the kind of restoration or use you have in mind. For a period-correct passenger-car presentation, focus first on the appropriate construction, tread family, and sidewall style; once those are settled, brand becomes a matter of matching the visual and historical character you want for your De Soto 6SG.

De Soto 6SG tires in 650-16 appear in several series, including Silvertown Classic Bias Ply, Coker Classic Bias Ply, Firestone Classic Bias Ply, Garfield Classic Bias Ply, Excelsior Bias Ply, Lester Classic Bias Ply, Deluxe All-Weather, Transport, STA Classic Military, Super Traxion, Transport Highway, Tornel Classic Truck, and Firestone Classic Truck. Those series split broadly between period-style passenger-car bias-ply tires and more commercial, military, or truck-duty constructions and tread patterns.

For most restored De Soto 6SG cars, the passenger-car bias-ply series will be the natural starting point because they better suit the look and road character of a 1935 De Soto. The truck and military families matter if the car has a special-use role, but they should be chosen deliberately, since tread pattern, load emphasis, and overall appearance can move the finished car away from a stock prewar passenger-car presentation.

A De Soto 6SG should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, electric motors, ozone sources, and petroleum contamination. On a collector car that sits for long periods, correct inflation and a clean storage environment matter as much as mileage because age and environment gradually affect the casing even when tread wear remains low.

If the car will sit for months at a time, move it periodically or support it in a way that reduces long-term flat spotting and sidewall strain. Keeping the De Soto 6SG clean, covered, and out of harsh temperature swings will help preserve both the appearance and service life of bias-ply collector tires.

Tires on a De Soto 6SG should be inspected before every meaningful drive and more thoroughly at regular intervals during the season. On a prewar car running bias-ply tires, inspection should include inflation pressure, sidewall cracking, tread separation signs, tube-related air loss, bead seating, and any evidence of wheel or rim damage.

That routine is especially important on a collector car because the tires may age out long before they wear out. A careful visual and hands-on inspection of the De Soto 6SG can catch problems early, and any vibration, pull, or sudden change in steering feel should be treated as a reason to stop and examine the tires and wheels before continuing.

Tires on a De Soto 6SG should be replaced when age, cracking, hardening, impact damage, persistent air loss, or structural changes make them questionable, even if tread depth still looks usable. Collector tires often retire because of time and storage history rather than mileage, and that is especially true on prewar bias-ply applications.

Any De Soto 6SG tire that shows sidewall checking, casing distortion, or a noticeable change in ride behavior deserves immediate attention from a specialist familiar with vintage tires. If an older tire’s age cannot be established with confidence, treating it conservatively is the wiser course, since the tire’s condition matters far more than remaining tread on a low-use collector car.

The available fitment for the De Soto 6SG centers on size 650-16, with multiple period-style bias-ply series offered in that size. Those include passenger-car families such as Silvertown Classic Bias Ply, Firestone Classic Bias Ply, Coker Classic Bias Ply, Garfield Classic Bias Ply, Lester Classic Bias Ply, Excelsior Bias Ply, and Goodyear Deluxe All-Weather.

That means size is the firm starting point, while the exact brand, tread, and sidewall style for a particular De Soto 6SG should be matched to surviving original references, restoration history, or marque-club guidance. If the goal is a historically convincing car, getting the overall look and construction type right is often as important as the name molded into the sidewall.

Correct tire fitment can absolutely affect how a De Soto 6SG is judged and how seriously a restoration is taken. Size, sidewall style, tread character, and overall stance all influence whether the car looks authentically prewar, and judges and knowledgeable buyers notice when a tire appears too modern, too commercial, or visually out of period.

For a De Soto 6SG being restored for show, preserving the right 650-16 size and choosing a sidewall and series that suit 1935 styling will usually strengthen the finished result. If the car is intended for touring rather than strict judging, you may have more flexibility, but the closer the tire looks to a proper prewar passenger-car application, the more coherent the restoration will appear.

De Soto 6SG tires in 650-16 are offered in both blackwall and wide whitewall styles, so either visual direction is available within the correct size. For a 1935 American car, both can make historical sense depending on the trim level, presentation, and the specific look the restoration is trying to recreate.

A blackwall De Soto 6SG tends to deliver a restrained, factory-minded appearance, while a wide whitewall creates a more formal and visually rich prewar look. The best choice is the one that matches the car’s original character, surviving period photos, and the standards of the club or judging body relevant to your restoration.

A properly fitted, correctly inflated, undamaged tire in the correct 650-16 size can be suitable for public-road use on a De Soto 6SG when the rest of the car is equally roadworthy. Safety depends on the full system rather than the tire alone, including wheel condition, tubes where required, brake function, steering integrity, suspension condition, and alignment.

A De Soto 6SG is a prewar automobile with driving manners very different from a modern car, so any road use should stay within the limits of the vehicle, the tire design, and the driver’s experience. Conservative speeds, careful route selection, and a full mechanical inspection before regular use are all part of using vintage tires responsibly.

Before driving a De Soto 6SG, check tire inflation, visible sidewall condition, tread condition, valve stems, wheel security, and any sign that a tube or casing is losing air. On a car of this age, it is equally important to inspect brakes, steering play, wheel bearings, and suspension because tire behavior can be affected by mechanical issues elsewhere in the chassis.

A short walk-around before each outing can prevent most avoidable problems. If the De Soto 6SG has been parked for an extended period, roll it forward and inspect the full circumference of each tire rather than relying on the portion you can see at a glance, since flat spotting, cracking, or casing issues may be hidden at first.

A De Soto 6SG on period-style 650-16 bias-ply tires should be driven at conservative speeds that respect both prewar chassis design and vintage tire behavior. These tires are intended to preserve the original character of the car, not to make it behave like a modern radial-equipped vehicle, so smooth inputs and moderate cruising are part of proper use.

The practical rule is to drive the De Soto 6SG well within the comfort range of the car and the road conditions rather than chasing modern traffic pace. If the car feels unsettled, wanders excessively, or reacts poorly to road grooves or crosswinds, reduce speed and reassess the overall setup before continuing.