De Soto 6 Deluxe & Custom Tires

De Soto 6 Deluxe & Custom models use five listed tire sizes across the 1940 to 1947 span: 600-16 for 1940, 650-16 for 1940, 1941, 1946, and 1947, 6.25-16 for 1941, 700-15 for 1946 and 1947, and 6.50-15 for 1946. The 600-16, 650-16, and 6.25-16 sizes are 16-inch wheel fitments, while 700-15 and 6.50-15 are 15-inch wheel fitments.

That means year alone is not always enough, especially in 1946 when both 16-inch and 15-inch sizes appear. Match the tire size to the actual wheel diameter on the car, then compare the wheel and tire against the car's existing setup, original paperwork, or a De Soto specialist's guidance before making a final selection.

On a De Soto 6 Deluxe & Custom, 650-16 is a numeric bias-ply tire size. The 650 indicates a nominal 6.50-inch section width, and the 16 indicates a 16-inch rim diameter. It is one of the most widely used sizes in this model group, appearing in 1940, 1941, 1946, and 1947.

The practical point is that 650-16 is not interchangeable with the 15-inch sizes simply because the overall tire looks similar at a glance. Confirm that the wheel itself is 16 inches and that the car has room for the intended section width before choosing among blackwall, whitewall, or truck-style variations in the same numeric size.

The 1946 De Soto 6 Deluxe & Custom shows three listed sizes because that year spans more than one wheel and tire setup. The sizes are 650-16, 700-15, and 6.50-15, which means 1946 includes both 16-inch and 15-inch wheel fitments rather than a single universal combination.

That kind of split usually means the buyer must identify the exact wheel diameter and configuration on the individual car instead of relying on the model year alone. A measurement of the wheel, a careful look at the existing tire sidewall, and comparison with period service information will narrow the choice much faster than starting with appearance alone.

De Soto 6 Deluxe & Custom models in this range use both 16-inch and 15-inch rim diameters. The 16-inch fitments are 600-16, 650-16, and 6.25-16, while the 15-inch fitments are 700-15 and 6.50-15. The first 15-inch sizes appear in 1946, while 16-inch applications continue to appear in the same later period.

That overlap is the most important fitment detail on this page because a 15-inch tire cannot be mounted on a 16-inch wheel, and the reverse is equally true. Confirm the wheel diameter directly on the car before moving on to sidewall style, brand preference, or whether you want a passenger-car look or a more utility-oriented tread design.

Start with the model year, then narrow the choice by the wheel diameter actually fitted to the car. A De Soto 6 Deluxe & Custom may use a 16-inch size such as 600-16, 650-16, or 6.25-16, or a 15-inch size such as 700-15 or 6.50-15, with 1946 being the key overlap year where more than one wheel diameter appears.

The most reliable approach is to compare the current tire sidewall, measure the wheel, and review any original paperwork that stayed with the car. If the car has been restored before, do not assume the existing tires are correct; restorations often substitute a close-looking size that changes stance, steering feel, or speedometer behavior.

De Soto 6 Deluxe & Custom tire listings include blackwall, wide whitewall, and double-whitewall sidewall styles, though the exact choices vary by size. The broadest variety appears in 600-16, while 650-16 and 700-15 also offer both blackwall and wide whitewall options. That gives restorers room to choose either a restrained service look or a more formal period presentation.

For a restoration-minded car, sidewall style has a strong effect on stance and visual character even when the tire size is correct. Compare the look you want with period photos of cars similarly equipped, and be sure the sidewall style you select is offered in the exact size and wheel diameter your De Soto actually uses.

Brands represented for De Soto 6 Deluxe & Custom sizes include BFGoodrich, Coker Classic, Firestone, Garfield, Excelsior, Lester, Goodyear, STA, Tornel, Avon, Ford Script, and Camac. Some of these are passenger-car styled bias-ply tires, while others are military, transport, or truck-oriented offerings in the same nominal size. Brand availability changes from one size to another rather than staying uniform across the full model range.

That matters because choosing a brand is not only about name recognition; it also affects tread style, sidewall appearance, and whether the tire presents as a passenger-car restoration tire or a utility-pattern alternative. Once you have confirmed the right size, compare brands within that size for the visual and driving character that best suits your De Soto.

De Soto 6 Deluxe & Custom listings cover a wide mix of series, including classic passenger-car bias-ply lines such as Silvertown Classic Bias Ply, Firestone Classic Bias Ply, Coker Classic Bias Ply, Garfield Classic Bias Ply, Lester Classic Bias Ply, and Excelsior Bias Ply, along with utility-oriented series such as Military NDT, Classic Military, Classic Truck, Transport, Transport Highway, Super Traxion, Super Transport, and Traxion. There are also Avon series such as Turbospeed Mk4, Tourist Crossply, and Traction Mileage.

The practical difference is that some series are aimed at period-correct passenger-car appearance, while others use military, highway-service, or truck-style tread patterns and load approaches in the same size family. If the goal is restoration appearance, start with the classic passenger-car bias-ply series; if the car has a specialized use or non-stock character, the utility-pattern choices may be more relevant.

A De Soto 6 Deluxe & Custom should be stored in a cool, dry, dark space away from direct sunlight, electric motors, furnaces, and sources of ozone that accelerate rubber aging. Keep the tires clean, maintain proper inflation, and avoid parking for long periods on damp earth, bare concrete, or surfaces contaminated with oil and solvents. Bias-ply collector tires benefit from steady conditions more than frequent exposure to heat and temperature cycling.

If the car will sit for extended periods, move it occasionally or support it in a way that reduces flat-spotting and sidewall stress. Cars stored with show-quality whitewalls should also be kept away from staining materials, since cosmetic damage often becomes permanent long before tread wear would ever justify replacement.

Tires on a De Soto 6 Deluxe & Custom should be inspected before regular road use and at intervals throughout the driving season, even when the car sees only occasional mileage. On a collector car running bias-ply tires, inspection should include inflation, tread condition, sidewall cracking, bead area condition, valve stems, and any signs that the tire has shifted on the rim or the tube has caused distortion.

A low-mileage collector car can age its tires out long before it wears them out, so mileage alone is not a useful guide. If the De Soto has been sitting for months, inspect again before the first drive, because storage-related cracking, air loss, or flat-spotting often appears after inactivity rather than during regular use.

Tires on a De Soto 6 Deluxe & Custom should be replaced when age, cracking, hardening, sidewall damage, repeated air loss, or structural irregularity appears, even if the tread still looks deep. Collector-car tires often age out from time and environment rather than mileage. A bias-ply tire that looks cosmetically acceptable can still be unsuitable for sustained road use if the rubber and casing have deteriorated.

Treat tread depth as only one part of the decision, not the whole decision. If a De Soto has old tires of uncertain history, especially on a long-stored car, have them evaluated before any meaningful driving so that age-related failure risk does not get mistaken for a minor restoration detail.

De Soto 6 Deluxe & Custom models in this range are associated with several period-size fitments rather than one universal original tire. The listed sizes are 600-16, 650-16, 6.25-16, 700-15, and 6.50-15, and the available replacement products are overwhelmingly bias-ply designs in classic passenger-car and service-oriented series. That tells a restorer the car belongs in a period bias-ply world, but not that every example left the factory identically equipped.

For a restoration that aims at factory accuracy, use the size and sidewall style that match the individual car's year and surviving evidence. Period sales literature, build records, and marque-club guidance are the best references when deciding between multiple correct-looking options for a De Soto from this era.

Correct tire fitment absolutely affects how a De Soto 6 Deluxe & Custom is judged and perceived, because tire size, wheel diameter, sidewall treatment, and tread style all influence stance and authenticity. A car fitted with the wrong rim diameter or an obviously non-period sidewall can look out of proportion even to a casual observer. Judges and experienced enthusiasts notice those details quickly on prewar and immediate postwar American cars.

For a higher-level restoration, match the tire not only to the year but to the visual character of the specific car. Whitewall width, blackwall versus whitewall presentation, and the correct 15-inch or 16-inch setup can all support a more convincing restoration and help preserve the car's period-correct appearance.

De Soto 6 Deluxe & Custom tire options include blackwall, wide whitewall, and in some 600-16 offerings, double-whitewall styles. Any of those can look period-appropriate depending on the specific year, trim presentation, and restoration goal, but blackwall and wide whitewall are the strongest mainstream choices within the available fitments. The right answer is usually more about the car's intended presentation than about the size itself.

A conservative driver-quality restoration may lean toward blackwall, while a more upscale show presentation often benefits from a correctly proportioned whitewall. Compare the intended sidewall style with period photography and the trim level of the individual De Soto so the tires support the car's overall visual story rather than competing with it.

Properly selected, properly mounted, and properly maintained period-style bias-ply tires can be suitable for public-road use on a De Soto 6 Deluxe & Custom within the limits of the car's age and design. The key is matching the tire to the correct wheel diameter and size, then making sure the car's steering, brakes, suspension, and alignment are in sound condition. A 1940s full-size car asks more of its tires than a static showpiece does.

Safe road use depends on the entire system, not just fresh rubber. Before any regular driving, verify inflation, inspect for age-related defects, and make sure the car tracks and stops correctly, because a De Soto on the wrong size or on compromised suspension parts will never feel right regardless of brand or tread pattern.

Before driving a De Soto 6 Deluxe & Custom, check tire inflation, sidewall condition, tread condition, valve stems, wheel fasteners, and any signs of rubbing or uneven wear. On a car from this era, it is also wise to confirm that the tires fitted are all the same size family and that the wheel diameter matches the tire marking, especially if the car has changed hands or been restored long ago.

A short pre-drive inspection matters because old cars can sit for long intervals between outings. Add a quick check of steering response and brake feel at low speed before heading into traffic, since many apparent tire problems on collector cars are first noticed as handling changes during the opening miles.

A De Soto 6 Deluxe & Custom fitted with period-style bias-ply tires should be driven at moderate, mechanically sympathetic speeds that respect both the age of the car and the handling character of bias-ply construction. These tires are part of a 1940s driving experience, not a modern high-speed one, and the car's braking, steering geometry, and suspension design all set practical limits before the tire alone does.

The sensible approach is to build speed gradually, pay attention to stability and braking feel, and avoid sustained high-speed cruising until the car has proven itself. Even with new tires, an unrestored or lightly used De Soto deserves conservative road use until the complete chassis and tire package have been fully sorted.