Hudson 40 Series Tires

The Hudson 40 Series in this fitment group uses one tire size: 550-16 for the 1940 model year. All six available products are built around a 16-inch rim diameter, and the listed constructions are bias-ply. Some products also list a compatible rim-width range of 3.25 to 4.00 inches, which is useful when checking original wheels during a restoration.

That single-size fitment simplifies the search, but it still helps to inspect the actual wheels on the car before choosing a tire. Restored cars sometimes pick up replacement wheels over the years, and sidewall style matters as much as size for a prewar Hudson, especially if the car is being finished for authenticity, touring, or show presentation.

A 550-16 Hudson 40 Series tire uses an older numeric bias-ply size format. The 550 refers to a nominal section width of roughly 5.50 inches, while the 16 refers to the wheel diameter in inches. In the products listed for Hudson 40 Series, that size appears only as a bias-ply construction and matches 16-inch rims.

Modern buyers sometimes expect older numeric sizes to behave like later metric sizes, but they do not translate directly. The best approach is to treat 550-16 as a period size family, then match the tire to the actual wheel diameter and the look you want, whether that means a blackwall touring appearance or a wide whitewall restoration style.

The Hudson 40 Series tires listed here are all bias-ply products in a vintage numeric size, so a tube is required. That is consistent with prewar collector-car practice and with the type of tires offered in 550-16 for this application. Nothing in the listed fitment suggests a tubeless radial alternative for this model group.

Tube selection should match the tire size and wheel condition, and the rim itself should be checked for corrosion, burrs, and old repairs before mounting. On a car like the Hudson 40 Series, proper tube and flap practice is part of preserving both reliability and the ride character expected from a correctly fitted prewar bias-ply setup.

For a 1940 Hudson 40 Series, the listed tire size is 550-16 on a 16-inch wheel. That gives you the basic fitment target, and the available tires are all bias-ply constructions intended for that size family. Where rim width is listed, 3.25 to 4.00 inches is the working range shown for some products.

The practical next step is to verify the stamping or actual measured diameter of the wheel already on the car, then compare that against any original handbook, restoration records, or marque references you have. Once size is confirmed, choose among blackwall or wide whitewall styles according to how original, formal, or road-oriented you want the Hudson 40 Series to appear.

Hudson 40 Series tires in 550-16 are available in both blackwall and wide whitewall form. Blackwall options appear from Excelsior, Avon, BFGoodrich, and Firestone, while wide whitewall options are listed from BFGoodrich and Firestone. All of them remain within the same vintage 16-inch bias-ply fitment category.

That choice lets an owner tune the car’s presentation without changing basic size. Blackwalls usually suit a more restrained, workmanlike, or touring look, while wide whitewalls create a more formal and show-oriented prewar appearance. If the car is being restored to a particular photograph, trim level, or judging standard, sidewall style is worth confirming before final selection.

Four brands appear in the Hudson 40 Series listings: Excelsior, Avon, BFGoodrich, and Firestone. All are offered in the 550-16 size, and all listed products use bias-ply construction. The series represented include Excelsior Bias Ply, Tourist Crossply, Silvertown Classic Bias Ply, and Firestone Classic Bias Ply.

Brand choice on a prewar car often comes down to the balance between historical look, preferred tread style, and sidewall treatment rather than size alone. Since the fitment is otherwise straightforward, owners can focus on the visual character of the tire and how closely it complements the overall restoration direction of the Hudson 40 Series.

The Hudson 40 Series listings include four series names: Excelsior Bias Ply, Tourist Crossply, Silvertown Classic Bias Ply, and Firestone Classic Bias Ply. All of them are bias-ply designs in 550-16, but they represent different branded approaches to vintage-style construction and appearance. Some are offered only as blackwalls, while others also appear in wide whitewall form.

For most Hudson 40 Series owners, the important distinction is less about fit and more about presentation. A series offered in wide whitewall may better suit a formal restoration, while a blackwall-only option may align with a simpler touring look. Comparing series by sidewall style, load information where listed, and overall period character will usually narrow the choice effectively.

A Hudson 40 Series should be stored in a cool, dry, dark space with the tires kept away from sunlight, ozone sources, electric motors, and petroleum contamination. Bias-ply collector tires benefit from clean floors, stable temperatures, and correct inflation during storage. If the car will sit for long periods, reducing sustained load on one contact patch helps preserve the casing shape.

Owners commonly move the car slightly from time to time or support it in a way that avoids long-term flat spotting while still respecting suspension and chassis needs. A prewar Hudson is heavy enough that simple storage habits matter, and routine pressure checks are part of keeping the tire, tube, and wheel assembly in good condition between drives.

Tires on a Hudson 40 Series should be inspected before each drive and more thoroughly at regular intervals during the season. On a prewar bias-ply setup, inspection should include air pressure, visible cracking, sidewall scuffing, tread separation, valve condition, and any movement between tire and rim. Because tubes are part of the assembly, slow leaks also deserve attention even when the tread still looks sound.

A collector car that is driven infrequently can still develop age-related issues, so low mileage does not eliminate the need for careful inspection. It is wise to have the tires looked over periodically by a shop familiar with vintage bias-ply and tube-type fitments, especially before tours, events, or longer road outings in a Hudson 40 Series.

Tires on a Hudson 40 Series should be replaced when age, cracking, hardening, casing distortion, repeated air loss, or other structural concerns appear, even if the tread remains deep. Collector tires often age out before they wear out, particularly on cars that spend more time parked than driven. That rule matters even more on a prewar bias-ply application where the tire’s internal condition is as important as what the outside shows.

A specialist inspection is the best way to judge serviceability if there is any doubt, but visible age-related deterioration should never be ignored on a vintage Hudson. Replacement timing should be guided by condition, storage history, and intended use, with a more conservative approach for touring and road driving than for static display alone.

The fitment listed for the Hudson 40 Series is 550-16, and the currently available products in that size are all bias-ply tires. Multiple series are offered, including Excelsior Bias Ply, Tourist Crossply, Silvertown Classic Bias Ply, and Firestone Classic Bias Ply. That means the correct size family is clear, while exact brand or sidewall choice depends on how a specific car was equipped or is being restored.

For a restoration that aims at factory-level accuracy, size should be established first, then period appearance should be checked against original literature, unrestored examples, or marque-club guidance. That process matters because a Hudson 40 Series can look notably different on blackwalls versus wide whitewalls even when the basic 550-16 fitment remains unchanged.

Correct tire fitment can absolutely affect both judging results and how a Hudson 40 Series is perceived by knowledgeable buyers. Size, construction type, and sidewall style all influence whether the car presents as an accurate prewar restoration or a driver-oriented interpretation. A Hudson wearing the correct 550-16 bias-ply profile will usually look more natural than one fitted with a visibly different modern substitute.

Judging standards vary, so owners should check with Hudson clubs, event rules, and the restoration goals for the specific car. If the Hudson 40 Series is being built for formal competition, details such as blackwall versus wide whitewall can matter almost as much as the size itself, especially when the rest of the car is restored to a high standard.

Hudson 40 Series tires are available here in blackwall and wide whitewall styles, both within the correct 550-16 bias-ply size family. Either style can suit a prewar restoration depending on how the individual car was originally presented and what visual character the owner wants to preserve. The listed choices give restorers flexibility without moving away from the proper period size.

A blackwall often supports a more restrained and utilitarian prewar look, while a wide whitewall creates a richer, more formal appearance that many collectors prefer on full-bodied cars of this era. If the goal is judged authenticity, compare the Hudson 40 Series against period photos, surviving original examples, and marque guidance before settling on the sidewall style.

A properly mounted, correctly inflated bias-ply tire in the right 550-16 size can be appropriate for public-road use on a Hudson 40 Series when the rest of the car is in sound mechanical condition. That includes the wheels, tubes, brakes, steering, suspension, and alignment, not just the tire itself. Prewar driving also places different demands on the car than modern highway traffic does.

The practical standard is to treat the tire as one part of a complete vintage system rather than as a standalone safety upgrade. Before regular road use, make sure the Hudson 40 Series has been inspected as a whole and driven within the limits of its era, especially if it has spent long periods off the road or has recently returned from restoration.

Before driving a Hudson 40 Series, check tire pressure, visible sidewall condition, tread condition, valve stems, wheel security, and any signs that the tire has shifted on the rim. Because the listed tires are bias-ply and tube-type, slow leaks and heat buildup deserve particular attention. It is also wise to inspect the spare and the tools needed to service it on the roadside.

A short pre-drive walkaround can prevent the most common vintage-tire problems from becoming trip-ending failures. On a prewar Hudson, tire readiness should be paired with a quick brake, steering, and fluid check so the car’s road behavior matches the limits of the tires and the pace of modern traffic.

A Hudson 40 Series fitted with period-style 550-16 bias-ply tires should be driven at moderate speeds that respect both the tire design and the capabilities of a 1940 chassis. Even when the tires are new, they are built to deliver vintage character rather than modern high-speed behavior. Smooth steering inputs, longer braking distances, and reasonable cruising speeds are part of using them correctly.

The safest approach is to drive the Hudson 40 Series at speeds that feel settled for the car, the road, and the surrounding traffic rather than trying to match modern interstate pace. If the car sees regular road use, careful balancing, correct inflation, and a full chassis inspection will do as much for confidence as the tire choice itself.