The 1937 Willys 37 Series came from an era when compact American cars were expected to be economical, practical, and easy to keep on the road. For collectors today, that pre-war character makes tire choice part of the vehicle’s overall presentation, not just a maintenance item. The 1937 Willys 37 Series uses a 550-16 bias-ply tire on a 16-inch rim, which keeps the fitment rooted in the period sizing and construction the car was designed around. Available choices include blackwall and wide whitewall styles across several vintage bias-ply series. The key decision is usually whether to prioritize a more utilitarian look or a more restoration-oriented appearance while staying with the proper size.
Which Tire Size Is Right for The 1937 Willys 37 Series
The 1937 Willys 37 Series uses one primary tire size: 550-16. That is a bias-ply fitment on a 16-inch rim, and it carries across the covered 4 Cyl. sub-model, so the main decision is not size selection but choosing the right brand, sidewall style, and period-style presentation within that correct fitment.
In a numeric bias-ply size like 550-16, the 550 refers to an approximate 5.50-inch nominal section width and the 16 identifies the wheel diameter in inches. This is a traditional bias-ply construction suited to a 1937 Willys 37 Series and matched to the vehicle’s pre-war tire format and stance. Available 550-16 choices include blackwall and wide whitewall designs from Excelsior, Avon, BFGoodrich, and Firestone across several vintage tire series. The practical choice within 550-16 usually comes down to whether the car is being kept more utilitarian in appearance or finished with a more restoration-minded whitewall look.
Tire fitment is straightforward for the covered 1937 Willys 37 Series sub-model. The 4 Cyl. version uses the same primary size, so the focus stays on choosing the right bias-ply style and confirming the wheel setup remains true to the original rim diameter.
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1937 Willys 37 Series 4 Cyl.
The 1937 Willys 37 Series 4 Cyl. uses the 550-16 bias-ply tire size on a 16-inch rim. That keeps tire selection centered on appearance and product details such as blackwall versus wide whitewall rather than sorting between multiple primary fitments.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1937 Willys 37 Series Tires for Sale
Available 550-16 options span Excelsior, Avon, BFGoodrich, and Firestone, with vintage bias-ply series offered in both blackwall and wide whitewall styles. The product grid is most useful for comparing brand character, sidewall presentation, and rim-width compatibility where stated.
For a 1937 Willys 37 Series, the common tire questions usually center on the 550-16 size, 16-inch rim fitment, period-style bias-ply choices, sidewall appearance, and what to inspect before putting a pre-war car back on the road.
Tire Size & Fitment
What tire size fits a 1937 Willys 37 Series?
The 1937 Willys 37 Series uses a 550-16 tire size. This is a numeric bias-ply size used on a 16-inch rim, and the covered 4 Cyl. sub-model follows that same primary fitment.
That makes the first step fairly simple: confirm the car still has 16-inch wheels and then choose among the available 550-16 tires. Since the size itself does not vary here, most buyers end up comparing blackwall versus wide whitewall styling, brand preference, and whether the wheel width matches the tire’s intended range when that specification is given.
What size rim does a 1937 Willys 37 Series use?
The primary tire fitment for the 1937 Willys 37 Series is built around a 16-inch rim. That rim diameter matches the 550-16 tire size, where the final number in the size code identifies the wheel diameter in inches.
Rim diameter is only one part of the check, especially on an older vehicle. A car that has been updated over the years may no longer have its original wheel setup, so it is smart to confirm both the actual wheel diameter and wheel width before choosing a new 550-16 tire, particularly when comparing products with stated rim-width ranges.
Does the 1937 Willys 37 Series 4 Cyl. use the same tire size?
Yes. The covered 1937 Willys 37 Series 4 Cyl. uses the same 550-16 bias-ply tire size as the model core. That keeps fitment consistent rather than splitting the car into multiple primary tire-size groups.
Because the sub-model stays with the same size, tire selection becomes more about how the car will be presented and driven. A buyer can focus on choosing between blackwall and wide whitewall styles, compare vintage series from the available brands, and verify the wheel remains a proper 16-inch setup before moving ahead.
Choosing the Right Tire
What should I consider when choosing a 550-16 tire for a 1937 Willys 37 Series?
Start with the core fitment details: 550-16 size, bias-ply construction, and a 16-inch rim. From there, the meaningful differences are appearance and product specifications, including blackwall or wide whitewall styling, brand, tire series, and any stated rim-width or load information.
A more understated driver presentation often points buyers toward blackwall options, while a restoration-oriented look may favor a wide whitewall. It also helps to compare wheel width against any published rim-width range and to think about how the car will be used, since a lightly driven collector vehicle may call for different priorities than a regularly roaded pre-war car.
What sidewall styles are available for 1937 Willys 37 Series tires?
The available 550-16 tires for a 1937 Willys 37 Series include both blackwall and wide whitewall sidewall styles. Those two looks create a noticeably different visual effect even though they remain within the same primary size and bias-ply construction.
Blackwall tires tend to give the car a simpler, more utilitarian presentation, while wide whitewalls create a more dressed, restoration-oriented appearance. Since sidewall treatment changes the visual character of the car more than the fitment itself, it is worth considering the vehicle’s finish, trim level, and overall restoration direction before settling on one style.
What brands offer tires for the 1937 Willys 37 Series?
The 550-16 fitment for the 1937 Willys 37 Series is available from Excelsior, Avon, BFGoodrich, and Firestone. Those options appear across several vintage bias-ply series, including Excelsior Bias Ply, Tourist Crossply, Silvertown Classic Bias Ply, and Firestone Classic Bias Ply.
Brand choice on a pre-war fitment like this is usually less about chasing one name and more about matching the tire’s look and specifications to the car. Comparing sidewall style, stated rim-width compatibility, weight, and any published load figure can help narrow the field once the correct 550-16 size has already been established.
Restoration & Appearance
Which tire should I choose for a period-style 1937 Willys 37 Series?
A period-style 1937 Willys 37 Series starts with the proper 550-16 bias-ply size on a 16-inch rim. Keeping that original-style sizing format and construction preserves the visual proportions that suit a pre-war Willys much better than jumping immediately to a modern-looking alternative.
The next decision is usually sidewall presentation rather than size. Blackwall options support a simpler, workmanlike appearance, while wide whitewalls create a more formal restoration look. If exact historical accuracy matters beyond general period style, the final choice should be checked against marque literature, period photography, or other vehicle-specific references.
How does tire construction affect the appearance of a restored 1937 Willys 37 Series?
On a restored 1937 Willys 37 Series, bias-ply construction plays a major role in the car’s visual character because it matches the vintage sizing format and overall tire profile associated with the period. In this fitment, 550-16 remains a traditional bias-ply presentation on a 16-inch rim.
Appearance is not only about whitewalls or brand markings; construction influences the stance and visual relationship between tire and wheel. Staying with a bias-ply tire helps maintain that older look, while the choice between blackwall and wide whitewall fine-tunes the final presentation. That distinction matters on a pre-war restoration where tire style is highly visible.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1937 Willys 37 Series?
Yes. Even though the 1937 Willys 37 Series uses a 550-16 tire on a 16-inch rim, modifications can change whether that fitment still works as expected. Common issues include replacement wheels, altered wheel width, suspension changes, brake conversions, or body and fender work completed long after the car left its original configuration.
A pre-war car should be checked as it sits today rather than assumed to retain stock dimensions. Measuring actual wheel diameter and width, then looking for steering, fender, and suspension clearance, helps prevent surprises. That is especially important when a vehicle has been stored, restored in stages, or assembled from parts over many decades.
What should I inspect before driving a 1937 Willys 37 Series on new tires?
Before driving a 1937 Willys 37 Series on new tires, inspect the wheels for damage or excessive corrosion, confirm the 16-inch rim setup is sound, and make sure the tires are seated and inflated properly. It is also worth checking the valve stems, lug hardware, and general condition of the steering and suspension components.
Roadworthiness on an older collector car depends on more than fresh rubber. A careful look at clearance through full steering travel, along with a short low-speed test for rubbing, vibration, or air loss, can reveal setup issues early. After the first drives, recheck pressure and visual condition so the new 550-16 tires can settle in properly.
How should 550-16 tires on a collector 1937 Willys 37 Series be maintained?
A collector-driven 1937 Willys 37 Series benefits from regular pressure checks, visual inspections, and clean storage conditions. On 550-16 bias-ply tires, watch for sidewall cracking, cuts, bulges, uneven wear, and slow air loss, especially if the car spends long periods parked between outings.
Storage matters almost as much as mileage on a pre-war vehicle. Keeping the car away from prolonged sunlight, moisture, and ozone sources helps preserve the tires’ condition, while occasional movement can reduce the effects of sitting in one spot. Before any longer drive, inspect tread and sidewalls again rather than assuming low annual use means the tires are ready.
