1958 BMW Tire Fitment Guide

1958 BMW vehicles use four sizes split by model. The BMW 501, 502, and 503 use either 185R15 radial tires or 640-15 bias-ply tires, both for 15-inch rims. The BMW 507 uses either 175R16 radial tires or 600-16 bias-ply tires, both for 16-inch rims. Rim width ranges shown by current products include 4.5 to 6.5 inches for 185R15, 4.0 to 5.0 inches for 640-15, and 4.0 to 4.5 inches for 600-16.

That means the first fitment question is not radial versus bias-ply, but which BMW model you have and whether it uses a 15-inch or 16-inch wheel. Once the model is confirmed, the remaining choice is usually between a more period-authentic bias-ply size and a radial alternative in the same rim diameter. Always compare the tire size already on the car with the actual wheel before making a final selection.

On a 1958 BMW tire, 640-15 is a numeric bias-ply size. The 6.40 figure refers to the nominal section width, and the 15 indicates a 15-inch rim diameter. On 1958 BMW applications, that size belongs to the 501, 502, and 503 rather than the 507. Current 640-15 products are bias-ply designs offered with whitewall treatments, which fits the styling expectations many restorers want from a late-1950s luxury BMW.

Numeric sizes can look unfamiliar if you are used to modern metric markings, but they are normal for the era. If your BMW still has original-style wheels and you want a tire that visually matches a period restoration, 640-15 is often the first size to evaluate for the 15-inch cars. It should still be checked against the wheel's actual width and the intended use of the car before moving forward.

No, 1958 BMW models do not all use the same tire size. The 501, 502, and 503 share 15-inch fitments, with 185R15 in radial form and 640-15 in bias-ply form. The 507 stands apart with 16-inch fitments, using 175R16 as the radial choice and 600-16 as the bias-ply choice. That split reflects the difference between BMW's larger luxury models and its flagship sports roadster.

For a buyer, that means year and make alone are not enough to narrow the tire properly. A 1958 BMW sedan, coupe, or roadster may all look period-correct, but the wheel diameter changes the entire fitment path. Identify the model first, then confirm whether the goal is a restoration-style bias-ply look or a radial built around more contemporary driving expectations.

For a 1958 BMW 501, 502, or 503, both sizes fit the same 15-inch wheel diameter, but they represent different construction types. The 185R15 is a radial size offered in redline, blackwall, and narrow whitewall versions, while the 640-15 is a bias-ply size offered in whitewall styles. Radials generally appeal to owners who want more familiar road behavior in regular use, while bias-ply tires appeal to owners aiming for a more era-correct presentation and driving feel.

The better choice depends on how you use the car and how original you want it to appear. A show-focused restoration often leans toward the numeric bias-ply size, while a touring or casual driving car may lean toward the radial if the wheel and clearance are appropriate. Keep the decision tied to the model and wheel diameter first, because the 507 does not share these 15-inch sizes.

1958 BMW tire choices include several sidewall styles depending on size. The 185R15 radial offerings include redline, narrow whitewall, and blackwall options. The 640-15 bias-ply size is available in wide whitewall and narrow whitewall styles, while the 600-16 bias-ply size for the BMW 507 includes both blackwall and wide whitewall choices. Those differences matter because sidewall treatment can change the visual tone of a restoration almost as much as the wheel itself.

Late-1950s European cars are often most at home with restrained sidewall treatments, especially blackwall or narrower whitewall looks, but the right choice depends on the way the specific car is being restored and judged. Sidewall style should be selected alongside size and construction rather than as an afterthought. If authenticity for a particular market delivery matters, compare the finished look against period photos or a BMW marque specialist's guidance.

Several brands cover 1958 BMW fitments. The 185R15 radial size is available from Coker Classic and Michelin, the 640-15 bias-ply size from BFGoodrich and Firestone, and the 600-16 bias-ply size from BFGoodrich, Coker Classic, Avon, and Firestone. That means brand choice changes with size rather than staying the same across the entire BMW range. Some sizes also offer a broader cosmetic spread than others, especially where multiple sidewall styles are available.

Brand selection is easiest after you settle the model and size. A 501 owner considering a radial is looking at a different brand pool than a 507 owner staying with a 16-inch bias-ply tire. Once the fitment is narrowed, compare sidewall appearance, rim-width compatibility, and any speed or load markings that matter for how the car will actually be driven.

Current 1958 BMW tire offerings show different rim-width ranges by size. The 185R15 radial size fits rims from 4.5 to 6.5 inches wide depending on the product, with some listings starting at 5.00 inches. The 640-15 bias-ply size is shown on rims from 4.00 to 5.00 inches, and the 600-16 bias-ply size is shown on 4.00 to 4.50 inch rims. Those ranges are not interchangeable across all sizes even when the sidewall appearance may seem similar.

Rim width is one of the most important final checks before ordering for a collector BMW. Two tires can share the same wheel diameter but still call for different wheel widths, especially when comparing metric radials with older bias-ply sizes. Measure the actual wheel, not just the tire already mounted on it, and compare that number to the size you plan to use.

Tube requirements depend on the specific 1958 BMW tire size and product. The 185R15 radial products shown here are tubeless, marked TL on the Michelin listings. The bias-ply sizes are not all marked the same way in their size descriptions, so tube use should be confirmed from the specific tire and wheel combination rather than assumed across every 640-15 or 600-16 product. Wheel design matters just as much as tire construction when deciding whether a tube is appropriate.

That makes the wheel itself part of the fitment decision, especially on original late-1950s rims. If your BMW retains factory-style wheels, check whether the wheel was intended for tube-type use and whether the valve stem, bead area, and overall condition support your tire choice. A marque specialist or experienced vintage tire installer can help confirm the correct setup before the tires are mounted.

Within each model group, the paired sizes share the same rim diameter. The BMW 501, 502, and 503 use either 185R15 or 640-15 on 15-inch rims, while the BMW 507 uses either 175R16 or 600-16 on 16-inch rims. That means original wheels can often remain in service when moving between the two listed sizes for a given model, provided the wheel diameter is correct.

The remaining question is wheel width and overall condition, not simply diameter. A radial and a bias-ply tire in the same nominal wheel diameter may call for different acceptable rim-width ranges, so the original wheel should be measured and inspected before finalizing the change. That step is especially worthwhile on unrestored or long-stored wheels where corrosion, previous repairs, or age may affect serviceability.

A 1958 BMW should be stored in a cool, dry, dark space away from direct sunlight, electric motors, welders, furnaces, and other ozone sources that accelerate sidewall aging. Keep the tires properly inflated, move the car periodically if practical, and avoid letting it sit for months on one contact patch. Bias-ply tires such as 640-15 and 600-16 are especially prone to temporary flat-spotting during long static storage, while any vintage-style tire can suffer from age-related cracking if the environment is poor.

If the car will sit for an extended season, many owners use tire cradles or stands to reduce stress on the carcass and suspension. Storage habits affect both appearance and ride quality, which matters on a collector BMW that may only see occasional use. Good storage also protects the spare, which is easy to forget until the day it is actually needed.

Tires on a 1958 BMW are usually judged more by age than by mileage. A collector-car tire should be evaluated closely once it reaches roughly five to seven years from its date of manufacture, and many owners consider replacement as it approaches about ten years even if the tread still looks good. That guideline matters because low-use classics often age out before they wear out, especially when they spend long periods parked.

Check the date code and inspect the sidewalls, tread blocks, and bead area rather than relying on appearance alone. A BMW that only goes to shows or weekend drives can still be riding on aged rubber with reduced safety margins. When in doubt, age, storage history, and condition should carry more weight than remaining tread depth.

Tires on a 1958 BMW should be inspected before every drive and again before any longer outing. Look for cracking, cuts, bulges, irregular wear, embedded debris, and any sign that the tire is no longer holding pressure consistently. If your BMW uses a tube-type setup or an older wheel arrangement, include the valve stems and any tube-related hardware in the inspection routine as well.

Short pre-drive checks are especially important on cars that sit between uses, because age and storage conditions can change a tire's condition without adding any mileage. A quick walk-around can catch a slow leak or sidewall issue before it becomes a roadside problem. On a valuable vintage BMW, that habit is simple insurance for both safety and preservation.

A 1958 BMW 501 would have been delivered in the bias-ply era, so bias-ply construction is the historically appropriate starting point when aiming for original-type fitment. Among the listed sizes for the 501, 640-15 is the bias-ply choice and 185R15 is the radial alternative. No single original equipment brand should be assumed across every market or delivery condition, but the construction type itself is the bigger authenticity marker for a car of this period.

That means a restoration intended to reflect late-1950s showroom character will usually begin with the 640-15 size, then narrow further by sidewall style. Owners pursuing event-level accuracy should still compare their car against period literature, photos, and BMW marque-club guidance, because export markets and later owner changes can complicate what is on the car now. The current radial option is useful, but it serves a different goal than strict originality.

Correct tire fitment does matter when showing a 1958 BMW, especially on judged restorations. Size, construction type, and sidewall treatment all affect whether the car looks consistent with its era and model. A radial on a car judged for strict originality may draw attention if the class expects period-correct bias-ply construction, and an overly modern sidewall treatment can stand out even when the wheel diameter is right.

The standard is not identical at every event, so it helps to know whether the car is being shown for authenticity, touring presentation, or a looser driver class. For many owners, the goal is simply a visually convincing period look rather than absolute concours scoring. If the event is important, check the rulebook and ask a BMW club or judging authority what they expect before committing to a tire style.

For a 1958 BMW using 185R15, Michelin XVS and Coker Classic radial options differ in sidewall treatment, speed marking, and rim-width coverage. The Coker Classic 185R15 is offered as a redline radial with a listed load of 1355 pounds at 35 psi and a 5.00 to 6.50 inch rim-width range. Michelin XVS appears in narrow whitewall and blackwall forms, with H-rated versions to 130 mph and a V-rated version to 149 mph; depending on the listing, approved rim width spans either 4.5 to 6 inches or 5.00 to 6.50 inches.

Those differences make the choice partly visual and partly technical. A buyer chasing a specific period appearance may favor one sidewall style over another, while a buyer with a known wheel width may find one listing aligns more neatly with the wheel already on the car. Speed-marked Michelin options also appeal to owners who want that explicit rating on the sidewall rather than a more appearance-driven presentation.

1958 BMW tires can be suitable for highway driving when the tire's size, condition, and speed rating match the way the car is used. Among the listed products, 185R15 radial options include Michelin H-rated tires to 130 mph and V-rated tires to 149 mph, while one 600-16 bias-ply option from Avon carries an H rating to 130 mph. Other bias-ply offerings in 640-15 and 600-16 are more about period construction and appearance than modern speed-marked touring use.

The limiting factor on a 1958 BMW is often the car itself as much as the tire. Brakes, suspension, steering condition, alignment, and age-related mechanical wear usually matter more to real-world highway safety than headline speed capacity. Any vintage BMW that will see regular road use deserves a full inspection and a tire choice that matches both the model and the intended driving pace.

Inflation pressure for 1958 BMW tires should be matched to the specific size and product, then checked against BMW's original recommendations for the car. Available load and pressure markings include 185R15 at 1355 pounds at 35 psi, 640-15 at either 1190 pounds at 32 psi or 970 pounds at 32 psi depending on the product, and 600-16 at 1400 pounds at 32 psi or 1,433 pounds on the Avon listing. Those figures describe the tire's rated capacity point, not a blanket setting for every BMW model.

Use the original owner's manual or factory literature for the vehicle's recommended running pressure, then compare that guidance to the reproduction or modern tire you are considering. Do not transfer a pressure figure from a 15-inch sedan tire to a 16-inch 507 tire, or from one brand's casing to another without checking. Pressure should always be set cold and rechecked after periods of storage.

Before taking a 1958 BMW on a longer drive, inspect each tire for visible cracking, bulges, cuts, punctures, uneven wear, and proper cold inflation pressure. Confirm that the valve stems are sound, and if the car uses a tube-type arrangement, make sure that part of the system is also in good condition. Do not forget the spare, because a spare that has aged out is not a real backup even if it still holds air.

Tires are only one part of the checklist on a late-1950s BMW. Wheel fasteners, brakes, steering response, fluid levels, and the general readiness of a seldom-driven collector car should all be checked before a trip. A careful pre-drive inspection reduces the chance that a small age-related issue turns into a roadside problem far from home.