1947 Nash Tire Fitment Guide

1947 Nash vehicles use two different tire sizes, and they are tied to the model rather than shared across the full lineup. The Ambassador 60 uses 6.50-15, while the Ambassador 600 uses 600-16. Those sizes do not share the same wheel diameter, so the Ambassador 60 follows a 15-inch fitment and the Ambassador 600 follows a 16-inch fitment. For 600-16, available products fit 16-inch rims and include examples intended for 4.00- to 4.50-inch rim widths.

The practical takeaway is that a 1947 Nash owner should identify the car by model before comparing brands or sidewall styles. Once that is established, the search becomes much simpler because each model has one clear numeric bias-ply size path. If your car has changed wheels at some point in its life, verify the actual rim diameter on the car before ordering so the tire size matches the wheel that is installed today.

On a 1947 Nash, 6.50-15 is a numeric bias-ply tire size. The 6.50 portion identifies the nominal section width in inches, and the 15 identifies the wheel diameter in inches. It is an older sizing format used widely in the period before modern metric and alphanumeric systems became common. For 1947 Nash applications, this size belongs to the Ambassador 60.

That matters because a modern buyer may mistake the first number for wheel size, when the wheel size is actually the number after the dash. On a 1947 Nash, reading the code correctly helps prevent crossing over into the wrong model’s fitment. If your Ambassador 60 is being restored for an era-correct appearance, keeping the proper numeric bias-ply format is part of preserving the look and stance Nash intended for the car.

On a 1947 Nash, 600-16 is also a numeric bias-ply tire size. The 600 identifies the nominal section width in the period numeric system, and the 16 identifies a 16-inch wheel diameter. It is not a metric or radial size code, even if one product in this size includes an added speed-rating letter in the full marking. For 1947 Nash applications, 600-16 is used on the Ambassador 600.

Understanding that old numeric code is helpful when comparing reproduction tires, because the visible sidewall marking may differ slightly from one brand to another while still referring to the same fitment family. A buyer shopping for a 1947 Nash Ambassador 600 can then focus on the remaining decisions, such as blackwall versus whitewall appearance and which brand best suits the car’s intended presentation and use.

For 1947 Nash fitments, the 600-16 size is available in both blackwall and wide whitewall styles. Blackwall offerings include Coker Classic and Avon examples, while wide whitewall options appear from BFGoodrich and Firestone. That gives the Ambassador 600 owner room to choose between a more restrained look and a more formal period presentation. The listed 600-16 whitewalls include widths such as 3.25 inches and 3.50 inches.

Sidewall choice affects the finished character of a 1947 Nash as much as the tire brand does. Many postwar American restorations favor a whitewall look because it suits the styling language of the period, while blackwalls can be appropriate for a more understated or driver-oriented presentation. If appearance matters to your project, decide on the visual goal early so you can narrow the field before comparing other details within the correct model-specific size.

1947 Nash buyers looking at the 600-16 size can choose from BFGoodrich, Coker Classic, Avon, and Firestone. All of those currently represented options are bias-ply products, but they differ in series, sidewall styling, and markings. BFGoodrich and Firestone offerings in this size include wide whitewall versions, while Coker Classic and Avon appear in blackwall form. That spread gives the Ambassador 600 owner several period-flavored directions to consider.

Brand selection usually comes down to how you want the car to look and how closely you want the tire’s presentation to align with a restoration theme. Some owners prioritize a classic American whitewall appearance, while others prefer the simpler blackwall look for a cleaner, less formal finish. Once the model and size are confirmed, compare brands within that exact fitment rather than treating all 1947 Nash tires as interchangeable.

For a 1947 Nash using 600-16 tires, both the BFGoodrich and Firestone options are bias-ply designs with wide whitewall styling and the same listed load marking of 1400 pounds at 32 psi. Both are built for 16-inch rims and list a 4.00- to 4.50-inch rim width range. The visible differences in the current offerings are the whitewall width and tire weight, with the BFGoodrich shown as a 3.50-inch whitewall at 21 pounds and the Firestone shown as a 3.25-inch whitewall at 24 pounds.

That means the decision is largely about appearance and brand character rather than a different basic fitment. A wider whitewall changes the visual emphasis of the car and can make a postwar Nash look a little more formal. If you are trying to match a specific restoration style, compare the whitewall width and overall look first, then confirm wheel compatibility and any remaining details on the exact tire you plan to run.

For 1947 Nash applications in 600-16, available tires are listed for 16-inch rims with a 4.00- to 4.50-inch rim width range. That gives Ambassador 600 owners a clear wheel-width reference for the products represented in that size. The wheel diameter itself is fixed by the tire size code, so 600-16 belongs on a 16-inch wheel. Rim width affects how the tire sits and presents on the wheel, even when the diameter is correct.

Because postwar cars sometimes receive replacement wheels over the decades, it is smart to confirm both diameter and width on the actual wheel before choosing a tire. A correct diameter alone does not guarantee the wheel is appropriate for every product in the size. Matching the tire to the wheel’s real dimensions helps preserve proper shape, appearance, and road manners on a 1947 Nash that is driven or shown regularly.

1947 Nash tires in the listed 600-16 offerings do not carry a tube-type or tubeless marker in the size line, so tube requirements should be confirmed against the exact product and wheel being used. That matters especially on older vehicles, where the wheel itself may influence whether a tube is appropriate. The products shown in 600-16 are all bias-ply tires, but a bias-ply construction alone should not be used as the only basis for deciding tube fitment.

A 1947 Nash owner should treat tube choice as part of the wheel-and-tire package, not as an afterthought. Original-style wheels, restored wheels, and replacement wheels can have different needs, and the valve stem setup also deserves attention. Before final installation, check the sidewall marking on the exact tire and confirm the wheel condition so the complete assembly is appropriate for the way the car will be used.

A 1947 Nash should be stored in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment that can age rubber prematurely. Clean, properly inflated tires hold up better in storage than neglected ones, and a collector car should not sit for long periods on underinflated tires. Because 1947 Nash fitments here are bias-ply, they are especially prone to temporary flat-spotting after long static storage.

Move the car periodically or rotate the tire contact patch if it will remain parked for extended stretches. Some owners use stands to reduce long-term load during seasonal storage, but the suspension should still be supported correctly for the vehicle. A few simple storage habits can preserve sidewall appearance, reduce vibration on the first drive, and help your 1947 Nash tires age more evenly over time.

On a collector car like a 1947 Nash, tire age usually matters more than tread wear. Many hobby vehicles accumulate low mileage, so the rubber can age out long before the tread is used up. A sensible rule is to begin evaluating tires closely around five to seven years of age and to treat around ten years as a serious replacement point regardless of remaining tread. The DOT date code on the tire is the starting point for determining age.

That timeline can shorten if the car is stored poorly, driven in strong sun, or left sitting for long periods at low pressure. Bias-ply tires on a 1947 Nash may still look presentable while quietly becoming harder and less forgiving with age. Regular age-based review is one of the easiest ways to avoid trouble on a low-use collector car that may seem fine until the next longer outing.

Tires on a 1947 Nash should be inspected before every drive, and they deserve a more thorough check before any extended outing. Look for sidewall cracking, cuts, bulges, irregular tread wear, and signs that the tire is losing pressure between drives. On an older vehicle, the inspection should also include valve stems and the condition of the spare. Bias-ply tires can hide age-related issues in a car that is only driven occasionally, so visual checks matter.

A quick walkaround catches most problems early and helps you avoid discovering them after the car is loaded for a trip. If the steering suddenly feels different, the car pulls, or ride quality changes, inspect again even if the tires looked acceptable before departure. Building that habit into 1947 Nash ownership is especially valuable because infrequent use can make tire problems easier to overlook.

A 1947 Nash Ambassador 60 would have been fitted in period with bias-ply tires, which was the standard construction for American passenger cars at the time. For this year and make, the Ambassador 60 uses the 6.50-15 size, so an era-correct restoration begins with that numeric bias-ply fitment rather than with a later-style radial or a different wheel diameter. The key point is matching the model first, because 1947 Nash did not use one universal size across the lineup.

If the car is being restored for judged authenticity, keep the size format, construction type, and overall visual presentation aligned with postwar expectations. Whitewall treatment and market-specific presentation can vary by car, so marque clubs, period photos, and factory literature are useful next steps when the goal is a highly exact restoration. That research is especially worthwhile when trying to match how a specific Ambassador 60 would have appeared when new.

Correct tire fitment matters on a 1947 Nash because judges and knowledgeable enthusiasts often notice whether the size, construction type, and sidewall style suit the era and the specific model. A wrong wheel diameter or a tire size borrowed from another model in the lineup can change the car’s stance and visual proportions. On a postwar American car, sidewall presentation also contributes heavily to authenticity, especially when the rest of the restoration is carefully finished.

For a show-focused 1947 Nash, think of the tires as part of the body and trim presentation rather than as a separate maintenance item. A tire that is mechanically usable can still look out of place if the sidewall style or fitment does not match the period character of the car. Event standards vary, so club judging guides and marque specialists are the best way to refine the final choice for the type of show you attend.

A 1947 Nash Ambassador 600 would also have used bias-ply tires when new, consistent with normal American passenger-car practice in the late 1940s. For this model, the correct size path is 600-16, not the 15-inch fitment used by the Ambassador 60. That distinction is important because the Ambassador 600 and Ambassador 60 do not share one common tire size despite being in the same year and make family.

A careful restoration should preserve that model-specific identity rather than treating any postwar Nash tire as interchangeable. Once the 600-16 size is established, the rest of the authenticity decision shifts toward presentation, including whether the car should wear a blackwall or a more formal whitewall look. If your goal is high-level originality, compare period imagery and consult Nash-focused enthusiast groups for details tied to market, trim, and owner preference trends of the era.

1947 Nash tires can be suitable for highway use when they are the correct size for the model, are in good condition, and are used within the capability of the exact tire selected. In 600-16, one available Avon bias-ply product carries an H speed rating, which corresponds to 130 mph, while other available products in the same size list load-and-pressure markings instead of a speed letter. Tire capability is only part of the picture on a 1947 Nash, because braking, suspension condition, steering, and overall vehicle age matter just as much in real-world road use.

A safe highway setup starts with honest expectations and a complete mechanical car. Bias-ply tires deliver a period driving character that feels different from later radial-era vehicles, so the driver should allow for that and keep the car properly maintained. If your 1947 Nash will see regular faster-road use, inspect the whole chassis carefully and choose a tire whose markings and intended use fit the way the car will actually be driven.

Inflation pressure for a 1947 Nash should follow the vehicle manufacturer’s recommendation for the car and the limits shown for the exact tire you choose. In 600-16, several available products list a maximum load of 1400 pounds at 32 psi, while another 600-16 offering lists a maximum load of 1,433 pounds. Those figures should not be transferred casually from one product or size to another, because they describe the specific tire rather than the whole year and make range.

The best approach is to start with the factory vehicle guidance for normal operating pressure, then confirm that the chosen reproduction tire’s markings and manufacturer recommendations are compatible with that use. A collector car can feel quite different with only small pressure changes, especially on bias-ply construction. Keeping all four tires evenly set and rechecking pressure before longer drives helps a 1947 Nash track and ride more consistently.

Before a longer drive in a 1947 Nash, inspect each tire for sidewall cracking, cuts, bulges, weathering, embedded objects, and uneven wear. Verify inflation pressure when the tires are cold, and check the valve stems and spare as part of the same routine. On a postwar car, the tire review should sit alongside a broader mechanical inspection that includes brakes, steering, wheel bearings, cooling system, and basic fluid condition. A sound tire cannot make up for age-related weaknesses elsewhere in the car.

Longer outings place sustained heat and load into components that may see only occasional local use the rest of the year. Even if the car has driven well around town, a more thorough pre-trip inspection can uncover issues before they become roadside problems. For a 1947 Nash, that preparation is part of enjoying the car confidently rather than simply assuming an older collector vehicle is ready because it starts and rolls.