1939 De Soto 6 Air Stream Tires

The 1939 De Soto 6 Air Stream uses a 650-16 tire in bias-ply construction. That size is the primary fitment for this vehicle, and the covered 7 Passenger version uses the same 650-16 size as well.

That makes the buying decision more about choosing the right version of the tire than choosing between multiple sizes. Once 650-16 is confirmed on the car, the next steps are checking the actual wheel setup and then deciding between blackwall or wide whitewall styling, classic passenger-car tread, or a more utility-focused pattern depending on how the De Soto will be driven and presented.

The primary tire fitment for the 1939 De Soto 6 Air Stream is built around a 16-inch rim. The 650-16 size itself confirms that wheel diameter, since the final number in the tire code identifies the rim diameter in inches.

Wheel diameter is only part of the fitment picture on an older car. It is still worth confirming the actual wheel width on the vehicle, especially if the car has had wheels changed over the years, because available 650-16 products do not all share the same rim-width specification. That check helps narrow the correct tire choices before focusing on sidewall style or tread design.

Yes. The covered 1939 De Soto 6 Air Stream (7 Passenger) uses the same 650-16 bias-ply tire size as the core 1939 De Soto 6 Air Stream fitment. There is no separate primary tire size to sort through for that sub-model.

That consistency simplifies the search, but it does not remove the need to inspect the car’s current wheel and tire setup. A long-owned or restored vehicle may have replacement wheels, mixed tire ages, or utility-style tires installed at some point, so it still helps to confirm the wheel diameter, wheel width, and the appearance goal before settling on a specific 650-16 product.

Start with the confirmed fitment: 650-16 in bias-ply construction on a 16-inch wheel. From there, the meaningful differences are sidewall style, tread character, rim-width specification, and whether the tire is aimed at classic passenger-car presentation or a more utility-oriented application.

A restoration-minded car often calls for a traditional blackwall or wide whitewall look, while a driver with a more utilitarian setup may lean toward highway or truck-style tread options. It also helps to compare product details such as load capacity where stated and the wheel-width range each tire is built around, because those factors affect whether a particular 650-16 is a sensible match for the car’s actual setup.

The available 650-16 tires for a 1939 De Soto 6 Air Stream include both blackwall and wide whitewall sidewall treatments. That gives the car owner a clear appearance choice while staying within the correct primary tire size and traditional bias-ply construction.

Sidewall style changes the look of a prewar car more than many buyers expect. A blackwall usually gives the De Soto a more restrained and practical presentation, while a wide whitewall creates a dressier period-style look. The right choice depends on how the car is being restored, the trim and paint combination, and whether the goal is formal appearance, general touring, or a more understated driver setup.

650-16 tires for the 1939 De Soto 6 Air Stream are available from BFGoodrich, Firestone, Coker Classic, Garfield, Lester, Goodyear, Excelsior, STA, and Tornel. Those options span classic bias-ply passenger-car styles along with some highway, military, and truck-oriented series in the same size.

Brand choice should be considered alongside the tire’s actual character, not by name alone. One 650-16 may be focused on wide whitewall presentation, another on a plain blackwall touring look, and another on a more commercial or utility tread. Comparing the tire series, sidewall style, and wheel-width suitability usually tells an owner more than the brand badge by itself.

A period-style 1939 De Soto 6 Air Stream starts with the proper 650-16 bias-ply size. From there, the choice usually comes down to whether the car looks right with a blackwall or wide whitewall and whether a classic passenger-car tread better suits the intended presentation than a more utility-oriented design.

Appearance choices on prewar cars are highly visual, so it helps to consider the car as a whole rather than isolating the tire by itself. Buyers pursuing a stricter restoration should compare tire style against marque references, period photos, or other vehicle-specific historical sources. Buyers building a touring car can stay within the correct size while choosing the sidewall treatment that best complements the finished vehicle.

On this De Soto, the primary fitment is a 650-16 bias-ply tire, and that construction plays a major role in the car’s restored look. Bias-ply tires carry the visual proportions and traditional stance most buyers expect on a late-1930s full-size American car.

Construction affects more than the sidewall itself because it shapes the overall presentation of the wheel opening and the car’s posture. Even within the same 650-16 size, a blackwall gives a more reserved look while a wide whitewall adds stronger period-style visual impact. For a restoration-focused build, the construction and sidewall treatment should support the era the car is meant to represent.

Yes. Even though the primary fitment is 650-16 on a 16-inch wheel, modifications can change what works on a specific 1939 De Soto 6 Air Stream. Wheel swaps, altered wheel width, brake changes, suspension work, or body and fender adjustments can all affect practical tire selection.

That is why an older car should be inspected as it sits rather than assumed to be completely stock. A buyer considering new 650-16 tires should confirm the actual wheel diameter and width, then look at steering travel and body clearance at the front and rear. Those checks matter especially on a restored car with replacement parts or long-ago modifications of uncertain origin.

Before road use, inspect the wheels, valve stems, lug hardware, and overall wheel condition along with the new tires themselves. On the tires, look for proper inflation, secure bead seating, and any visible issues such as cuts, bulges, or damage from mounting or storage.

A prewar car also deserves a broader road-readiness check before the first drive. Steering and suspension condition, brake function, alignment, and wheel-bearing health all influence how a newly installed set of 650-16 tires will behave. It also helps to verify that each tire clears fenders and suspension through full steering travel, especially if the car has seen prior restoration or mechanical changes.

Collector-car 650-16 tires should be maintained with regular pressure checks, routine visual inspection, and careful storage. Even when tread wear is minimal, a seldom-driven 1939 De Soto 6 Air Stream can still develop age-related issues such as sidewall cracking, flat spotting, or air loss over time.

Good storage habits help preserve both safety and appearance. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources can reduce premature deterioration, and moving the vehicle periodically helps avoid long-term stress in one contact patch. A quick inspection before each drive is worthwhile on any low-mile collector car, especially one running traditional bias-ply tires.