1958 Wolseley Tire Fitment Guide

1958 Wolseley vehicles use four sizes overall, split by model. The Wolseley 15/50 uses either 155R15 in radial construction or 560-15 in bias-ply construction, while the Wolseley 6/90 uses either 185R15 in radial construction or 640-15 in bias-ply construction. All four sizes fit 15-inch rims, and the listed rim-width ranges vary by size: 155R15 appears on 4.00 to 5.50-inch rims, 560-15 on 4.5 or 4.50 to 5.50-inch rims, 185R15 on 4.5 to 6.50-inch rims, and 640-15 on 4.00 to 5.00-inch rims depending on the tire.

That means year and make alone are not enough for a correct selection. Start by confirming whether your 1958 Wolseley is a 15/50 or a 6/90, then decide whether you want the period feel of the bias-ply size or the road behavior of the radial size used for that model. Once you have those two decisions settled, compare the wheel width on the car to the exact tire's approved rim-width range before moving ahead.

On a 1958 Wolseley, 560-15 is a period numeric bias-ply size. The "15" identifies a 15-inch rim diameter, while the "560" is the old numeric width-based designation rather than a modern millimeter measurement. Within the 1958 Wolseley range, 560-15 belongs to the 15/50 and not the larger 6/90.

That old numeric code matters because it points you toward an era-correct bias-ply tire family, not a later radial equivalent. If your goal is a restoration-minded look for a 15/50, 560-15 is the size to research first, especially because it is available in different whitewall treatments. Before committing, verify that the wheel on the car falls within the approved rim-width range of the exact 560-15 tire you prefer.

On a 1958 Wolseley, 155R15 and 185R15 are Euro-metric radial sizes. The first number is the nominal section width in millimeters, the "R" indicates radial construction, and the final "15" is the 15-inch rim diameter. Within the 1958 Wolseley lineup, 155R15 is used on the 15/50 and 185R15 is used on the 6/90.

Those codes are useful because they separate two different radial footprints for two different models, even though both fit 15-inch wheels. A 15/50 owner should not assume the larger 185R15 is an interchangeable upgrade, and a 6/90 owner should not downsize to 155R15 without very deliberate fitment research. Match the size to the model first, then compare sidewall style, tube type, and any speed rating shown on the specific tire.

For a 1958 Wolseley 15/50, the choice is between two constructions for the same model: 155R15 is the radial option and 560-15 is the bias-ply option. The radial choices are blackwall designs from Firestone and Michelin, while the bias-ply choices come in narrow and wide whitewall styles from Firestone and US Royal. Both fit 15-inch wheels, but they represent different periods and driving character rather than a simple cosmetic swap.

Owners focused on preserving an unmistakably late-1950s appearance often start with 560-15, especially when whitewall detail matters to the finished look. Owners who plan to use the car more regularly on modern roads often look first at 155R15 radial offerings. The key is to decide what matters most for your 1958 Wolseley 15/50 before comparing individual tires: era appearance, sidewall styling, or radial construction.

1958 Wolseley tires are available in several sidewall styles, and the mix depends on size. The 155R15 radial options are blackwall only, 560-15 bias-ply options are offered in narrow whitewall and wide whitewall form, 185R15 radial options appear in redline, narrow whitewall, and blackwall styles, and 640-15 bias-ply options are offered in narrow whitewall and wide whitewall form. That gives the 6/90 especially broad visual flexibility, while the 15/50 radial path stays more understated.

For a late-1950s British saloon, a blackwall or modest whitewall usually looks more in character than a highly stylized custom treatment, though personal taste and show goals still matter. Redlines on 185R15 create a distinctly different look than the more traditional whitewall or blackwall presentation. If appearance is a major part of the project, choose sidewall style only after you have first matched the tire size and construction to the correct 1958 Wolseley model.

Several brands cover 1958 Wolseley fitments, but the brand mix changes by size. Firestone and Michelin appear in 155R15, Firestone and US Royal appear in 560-15, Coker Classic and Michelin appear in 185R15, and BFGoodrich and Firestone appear in 640-15. That means brand choice is tied not only to construction, but also to whether you have a 15/50 or a 6/90.

A useful way to narrow the field is to begin with the model and size, then compare the brands that actually exist within that fitment rather than trying to pick a brand first. Some sizes lean toward blackwall radial offerings, while others center on whitewall bias-ply presentation. Once you know which tire family suits your 1958 Wolseley, brand comparison becomes much more straightforward and avoids chasing options that do not apply to your car.

Rim-width requirements for 1958 Wolseley tires vary by size. The 155R15 radial size appears on 4.00 to 5.50-inch rims, 560-15 bias-ply products appear on 4.5-inch rims or 4.50 to 5.50-inch ranges depending on brand, 185R15 radial products cover 4.5 to 6.50-inch applications, and 640-15 bias-ply products span 4.00 to 5.00-inch widths depending on the exact tire. The approved width range belongs to the specific tire, not just the size alone.

That is why wheel measurement is worth doing before final selection, especially if your 1958 Wolseley has had wheels changed over the years. A size may be broadly correct for the model yet still have one brand or series that is a better match to the wheel than another. Confirm the wheel width on the car, then match it against the individual tire's approved range rather than assuming all products in the same size behave identically.

Inner-tube requirements on 1958 Wolseley tires depend on the exact size and product. The 185R15 radial choices listed are tubeless, while the 155R15 radial category varies by product: Michelin X is TL, Michelin XAS is TT, and Michelin XAS-FF is TL. The listed 560-15 and 640-15 bias-ply products do not carry TT or TL markings in their size lines here, so the buyer should treat tube fitment as a tire-and-wheel combination question rather than making one assumption across the board.

The practical step is to check both the tire marking and the wheel itself before installation. A tube-type tire needs to stay tube-type, and an older wheel may also influence whether tube use is advisable even when a tire is offered in tubeless form. For a 1958 Wolseley that still uses original-style wheels, this is one of the most important details to settle before mounting anything.

Within each 1958 Wolseley model, the bias-ply and radial alternatives share the same 15-inch rim diameter. That means a 15/50's 560-15 and 155R15 both belong to 15-inch wheels, and a 6/90's 640-15 and 185R15 also belong to 15-inch wheels. Rim diameter compatibility is the easy part; the more important detail is whether the wheel width falls inside the approved range for the exact tire chosen.

Original wheels can often remain in service when moving between the two size paths for the same model, but they still need to be checked rather than assumed. Measure the wheel, inspect its condition, and compare it with the specific tire's listed rim-width requirement before proceeding. That approach preserves authenticity where possible while keeping the fitment decision grounded in the actual wheel under your 1958 Wolseley.

A stored 1958 Wolseley should be kept in a cool, dry, dark place away from direct sunlight, electric motors, battery chargers, and other ozone-producing equipment that can accelerate sidewall aging. Tire pressures should be kept up during storage, and the car should be moved periodically or supported in a way that reduces long static loading. Bias-ply tires, such as 560-15 and 640-15, tend to flat-spot more readily during long periods of inactivity than radial tires.

Collectors who let a 1958 Wolseley sit for months at a time should build tire care into the storage routine, not treat it as an afterthought. Even a beautifully restored car can develop vibration, cosmetic cracking, or avoidable stress if it stays parked in poor conditions. A little preventive storage discipline goes a long way toward preserving both the look and the drivability of vintage tires.

Tires on a 1958 Wolseley should be judged by age and condition as much as by tread wear. Collector-car tires often age out long before they wear out, so it is wise to begin evaluating them closely once they are around five to seven years old and to treat roughly ten years as a serious replacement point regardless of mileage. The DOT date code on the tire is the starting point for that timeline.

This matters because a lightly used Wolseley can still be riding on tires that look acceptable at first glance but have hardened rubber or age-related cracking. Annual review is not enough once a tire gets older; the closer it gets to that upper age range, the more conservative the owner should become. Age, storage history, and visible condition together tell the real story.

Tires on a 1958 Wolseley should be inspected before every drive and again before any longer outing. Look for sidewall cracking, tread separation, punctures, bulges, embedded debris, uneven wear, and pressure loss. If your tire setup uses inner tubes or older-style valve hardware, valve stems and air retention deserve the same attention as the tread and sidewall.

Frequent inspection is especially important on a collector car because use tends to be intermittent, and problems can develop while the car is parked rather than while it is being driven. A quick walk-around and pressure check can catch most issues before they become a roadside problem. On an older saloon like a 1958 Wolseley, that simple routine is one of the easiest ways to protect the car and the drive.

A 1958 Wolseley 15/50 would have been associated with period-correct bias-ply practice when new, and 560-15 is the bias-ply size offered for that model today. A radial alternative in 155R15 is also available for the same car, but radial fitment represents a later-style construction choice rather than the original norm for a late-1950s British saloon. Original-market details can still vary, so marque references remain useful when absolute authenticity matters.

For a restoration intended to reflect how a 15/50 would have appeared in its own time, 560-15 is the natural starting point, especially when whitewall styling is part of the plan. If the car is being restored to a road-use standard rather than a strict originality standard, the radial alternative may still be attractive. The right answer depends on whether your 1958 Wolseley is being judged, toured, or simply enjoyed.

Correct tire fitment does matter when showing a 1958 Wolseley, especially in events that value factory-era appearance. Judges and knowledgeable enthusiasts often notice whether the size matches the model, whether the construction suits the period, and whether the sidewall treatment looks appropriate for the car's original market character. A modern-looking radial or an overly stylized sidewall can change the visual tone of the car even when the tire physically fits.

That does not mean every show demands the same standard, but it does mean tire choice is part of the restoration conversation, not just a maintenance item. If your goal is serious authenticity, confirm model-specific size, construction, and presentation before mounting tires. Marque clubs and event rules are the best final authority when the distinction between acceptable and ideal matters for your 1958 Wolseley.

For the 1958 Wolseley 15/50, both Firestone and US Royal offer 560-15 bias-ply tires with the same listed maximum load of 970 pounds at 32 psi, but they differ in sidewall treatment and wheel-width coverage. Firestone appears in both narrow and wide whitewall versions with a listed 4.5-inch rim fitment, while US Royal appears in narrow and wide whitewall versions with a broader 4.50 to 5.50-inch rim-width range. The listed weights also differ slightly between brands.

That makes the choice less about basic size and more about how closely the tire matches the wheel and the visual goal of the car. If your 1958 Wolseley 15/50 has a wheel near the wider end of the range, that may influence which 560-15 version you consider first. Sidewall appearance is the other big separator, especially on a restoration where whitewall proportion shapes the overall stance.

1958 Wolseley tires can be suitable for highway driving when they are the correct size, properly installed, in good condition, and used within the speed capability marked on the tire. Among the listed radial products, 155R15 appears in T-rated form to 118 mph and H-rated form to 130 mph, while 185R15 appears in H-rated form to 130 mph and V-rated form to 149 mph; some listed products show no speed letter in the size line. Bias-ply options remain a valid period-type choice, but their road feel differs from a radial.

For most normal road use in a 1958 Wolseley, the car's own age, brakes, suspension, and overall mechanical condition will usually matter more than the tire's absolute speed ceiling. Highway confidence comes from the complete package: correct inflation, sound steering components, proper alignment, and fresh rubber. A tire that is technically appropriate but old, underinflated, or mismatched to the wheel is the real safety concern.

Inflation pressure for 1958 Wolseley tires should follow the vehicle's original handbook guidance first, with the tire maker's stated limits used as the boundary for the exact reproduction or radial product you choose. The listed maximum load figures include 155R15 at 1045 pounds at 44 psi on one product, 560-15 at 970 pounds at 32 psi, 185R15 at 1355 pounds at 35 psi on one product, and 640-15 generally at 1190 pounds at 32 psi, with one listed 640-15 product showing 970 pounds at 32 psi. Those figures are load-capability references, not a universal running-pressure prescription.

The safest approach is to avoid copying one tire's pressure to another size or construction. A 560-15 bias-ply, a 155R15 radial, and a 185R15 radial should not automatically be treated the same just because they all fit 15-inch wheels. Match the pressure strategy to the exact tire on the exact model, then recheck pressures regularly because collector cars often sit long enough for small losses to matter.

Before a longer drive in a 1958 Wolseley, inspect each tire for cracking, cuts, bulges, uneven wear, punctures, and secure valve stems, then verify cold inflation pressures and the condition of the spare. If your tire setup includes a tube-type product, make sure the assembly has been fitted correctly and is holding air consistently. Longer trips also call for a close look at wheel fasteners and visible suspension or steering issues that could affect tire wear or stability.

Tires are only one part of the pre-trip routine, but they are the part that touches the road every second the car is moving. A few minutes spent checking them can prevent the kind of failure that turns a pleasant tour into a recovery job. On a 1958 Wolseley, combine tire checks with a broader mechanical once-over so the car is ready for distance, not just for a short local run.