Plymouth P22 Tires

Plymouth P22 fitment in this year range centers on two numeric bias-ply sizes: 640-15 and 670-15. The 640-15 size is listed for 1951 and 1952, while 670-15 appears for 1952. Both sizes use 15-inch rims, but they are different section widths and should not be treated as interchangeable without confirming what the specific car was equipped to use.

That means a 1951 Plymouth P22 points directly to 640-15, while a 1952 Plymouth P22 needs a closer look before choosing. Start with the year, then verify the wheel diameter, any surviving original paperwork, and the current tire size if the car has long-standing fitment history. On a restored or judged car, matching the established size matters for both stance and authenticity.

On a Plymouth P22, 640-15 is an older numeric bias-ply tire size rather than a modern metric code. The 640 represents a nominal 6.40-inch section width, with the decimal omitted in period style, and the 15 identifies the rim diameter in inches. It is a traditional postwar passenger-car bias-ply format used before modern alphanumeric and metric sizing became common.

Understanding that code helps you avoid confusing it with later sizing systems that describe aspect ratio and construction more explicitly. When comparing products for a Plymouth P22, look beyond the size stamp and also check rim-width recommendations, sidewall style, and whether you are preserving an original-style bias-ply driving feel. That context matters as much as the size itself on a collector car.

The 1952 Plymouth P22 is listed with both 640-15 and 670-15. Because both sizes share the same 15-inch rim diameter and the available products are bias-ply, the difference is not a wheel-diameter change or a radial-versus-bias split. It points instead to a configuration difference within the 1952 model range, such as trim level or body style.

A 1952 Plymouth P22 owner should identify the specific car rather than relying on year alone. Check surviving tires, wheel and trim information, restoration records, and marque references so the selected size matches the car’s intended fitment. That extra step helps preserve the correct proportions and keeps the car from looking under-tired or over-tired for its body.

Plymouth P22 tires in the listed sizes are traditional numeric bias-ply designs, and the available products are bias-ply constructions. For these period-style sizes, a tube is required. That applies to both 640-15 and 670-15 in this model group.

Tube use is part of maintaining the correct collector-car tire system rather than a minor accessory choice. When fitting new tires to a Plymouth P22, the tube, flap requirements if applicable, and wheel condition should be considered together so the assembly is appropriate for older rim design and service. A clean, properly prepared wheel is just as important as the tire itself.

The simplest Plymouth P22 check is the year: 1951 uses 640-15, while 1952 may use either 640-15 or 670-15. Since both 1952 sizes are 15-inch fitments, the decision is not made by rim diameter alone. It comes down to confirming which size belongs to the specific configuration of the car.

Begin with any original paperwork, restoration records, old tire sidewall markings, and the car’s body and trim identity. If the Plymouth P22 has been restored in the past, do not assume the current tire size is automatically correct; compare it against period references or marque-club guidance. That approach is especially important when visual accuracy and ride height are part of the restoration goal.

Plymouth P22 tires are available in blackwall, narrow whitewall, and wide whitewall styles across the listed 640-15 and 670-15 sizes. The 640-15 offerings include blackwall, narrow whitewall, and wide whitewall choices, while 670-15 is represented even more broadly in those same sidewall categories. That gives owners flexibility to match either a restrained factory-type appearance or a brighter period look.

Sidewall choice can change the whole presentation of a Plymouth P22 even when the size remains correct. Blackwalls generally suit a more utilitarian or understated restoration, while whitewalls often better match a dressed-up early-1950s passenger-car look. If the car is being restored for judging, compare the sidewall width and style to period photos or marque standards before finalizing the selection.

Plymouth P22 tires in the listed sizes are available from BFGoodrich, Firestone, Avon, Excelsior, US Royal, Coker Classic, Universal Vintage Tire, Goodyear, and STA. Some brands appear only in one of the two sizes, while others offer multiple sidewall variations across the range. All listed products for this model group are bias-ply constructions.

Brand choice on a Plymouth P22 usually comes down to the visual details and period character you want to emphasize. One owner may prefer a traditional blackwall look, while another may be focused on a particular whitewall width or a brand family that matches the rest of the restoration. Once the correct size is settled, brand and sidewall become the main appearance decisions.

Plymouth P22 products span several series names, including Silvertown Classic Bias Ply, Firestone Classic Bias Ply, Excelsior Bias Ply, Super Safety Crossply, US Royal Classic Bias Ply, Coker Classic Bias Ply, Universal Classic Bias Ply, Turbospeed Mk4, Super Cushion, Custom Super Cushion, Super Cushion Deluxe, and Super Transport. Most are standard collector-car passenger bias-ply lines, while some reflect distinct brand families and tread-era identities. The STA Super Transport is the clearest outlier, carrying a military and truck attribute rather than a standard passenger-car description.

For a Plymouth P22, series choice matters most when you are balancing visual authenticity with the role the car plays. Passenger-car classic bias-ply series are the more natural fit for a restoration-minded sedan or coupe, while a truck-oriented series deserves closer thought before use on a passenger application. Keeping the tire series aligned with the character of the car usually produces the most convincing result.

A Plymouth P22 should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, ozone sources, and prolonged heat. Inflation should be checked before the car is parked for a long period, and the vehicle should sit on a clean surface rather than bare earth or damp concrete. If the car will remain still for an extended season, moving it occasionally can help reduce flat spotting in bias-ply tires.

Collector cars tend to age their tires through time and environment more than through mileage, and a Plymouth P22 is no exception. Proper storage helps preserve sidewalls, whitewalls, and casing shape, all of which matter on a low-use postwar car. If the car is displayed more often than driven, storage discipline becomes one of the biggest factors in tire life.

Tires on a Plymouth P22 should be inspected before each meaningful drive and at regular intervals even when the car is mostly parked. On a bias-ply collector tire, inspection should include air pressure, sidewall cracking, tread separation signs, valve condition, uneven wear, and any changes in how the car sits. Tube-type assemblies also deserve periodic attention at the wheel and stem area.

Regular inspection matters because collector cars often see long dormant periods followed by occasional road use, which can hide problems until the car is moving. A Plymouth P22 that appears fine in the garage can still have age-related deterioration or pressure loss. Building inspection into every outing is a simple habit that protects both the car and the people riding in it.

A Plymouth P22 tire should be replaced when age, cracking, hardening, bulges, repeated air loss, or casing distortion appear, even if the tread still looks deep. Collector tires can age out long before they wear out, especially on cars that accumulate very few miles. Tread depth alone is not a reliable indicator of serviceability on an early-1950s bias-ply application.

That is especially important for a Plymouth P22 because the car may spend much of its life parked, shown, or driven only occasionally. Age-related failure modes tend to develop quietly, so replacement decisions should be tied to condition and inspection history rather than mileage alone. If there is any doubt about an older tire’s structural health, a specialist evaluation is wise before further road use.

Plymouth P22 models in this range use period-style numeric bias-ply tire sizing, with 640-15 listed for 1951 and both 640-15 and 670-15 listed for 1952. The available series are all in keeping with mid-century collector replacement practice, but that does not mean every series or sidewall style was original to every individual car. Original fitment for a specific Plymouth P22 depends on the year and the exact configuration.

For restoration work, the best path is to treat the listed sizes as the starting point and then match the final choice to the car’s surviving evidence and marque references. The correct answer may involve not only the size but also whether the car should wear blackwalls, narrow whitewalls, or wide whitewalls. Authenticity comes from the full combination, not the size alone.

Correct tire fitment can absolutely affect both judging and perceived value on a Plymouth P22. Size, overall stance, sidewall treatment, and period-appropriate construction all contribute to whether the car looks coherent for its year and specification. A tire that is close but not quite right can stand out immediately on a carefully restored early-1950s Plymouth.

That does not mean every Plymouth P22 needs the same presentation, because preservation cars, drivers, and show restorations often have different goals. For formal judging, marque clubs and period reference material are the best standard for deciding which size and sidewall style belong on the car. Getting those details right helps the vehicle read correctly at first glance.

Plymouth P22 tires are offered in blackwall, narrow whitewall, and wide whitewall styles, and all three can make sense depending on the exact restoration objective. Blackwall gives the most restrained and workmanlike look, while narrow and wide whitewalls move the car toward a more upscale early-1950s presentation. The right choice depends on how the specific Plymouth P22 was equipped and how faithfully the restoration is being pursued.

On a judged Plymouth P22, sidewall style should be chosen with the same care as paint trim or hubcaps. A broad whitewall can dramatically change the personality of the car, even when the tire size is otherwise correct. Period photographs, sales literature, and marque-club guidance are the best way to settle the question for a specific build.

A correctly fitted new bias-ply tire can be appropriate for public-road use on a Plymouth P22 when the rest of the car is mechanically sound and the tires are in proper condition. The listed sizes are vintage-type 15-inch bias-ply fitments intended for collector use, so they should be understood as part of an older driving system rather than as a modern touring-car setup. Safe use depends on condition, inflation, wheel integrity, alignment, and realistic speeds.

A Plymouth P22 on period-style tires should be driven with the manners of a 1950s car in mind, not with modern-car assumptions. Steering feel, braking distances, and tracking behavior will reflect bias-ply construction and older chassis design. If the car is newly restored or newly acquired, a full mechanical inspection before regular road use is the responsible starting point.

Before driving a Plymouth P22, check tire pressure, visible sidewall condition, valve stems, wheel security, and any signs of uneven wear or casing damage. On a tube-type bias-ply setup, a slow leak or sidewall issue can develop while the car is parked, so a visual once-over is not enough by itself. The tires should also be matched in size and general condition across the axle.

That pre-drive routine matters because a collector Plymouth P22 may sit for weeks or months between outings. A few minutes in the garage can reveal issues that would otherwise show up at speed, especially on older roads or in warm weather. Treat the tire check as part of the car’s startup process, just like fluids, brakes, and lights.

A Plymouth P22 fitted with original-type bias-ply tires should be driven at prudent, moderate speeds that respect both the tire design and the age of the vehicle. Even when the tires are new, the car’s suspension, steering, brakes, and overall road manners are from the early 1950s, not the modern highway era. Appropriate speed is therefore governed by the entire vehicle package, not by tire size alone.

In practical use, a Plymouth P22 is best enjoyed with smooth inputs, extra following distance, and speeds that suit secondary roads and relaxed touring. Collector tires perform best when the driver avoids sudden lane changes, hard cornering, and extended high-speed running that the car was never meant to sustain. The goal is confident, period-appropriate use rather than pushing the limits of an antique design.