1959 BMW Tire Fitment Guide

1959 BMW vehicles use four sizes across two models. The 1959 BMW 503 uses either 185R15 radial or 640-15 bias-ply tires on 15-inch rims, while the 1959 BMW 507 uses either 175R16 radial or 600-16 bias-ply tires on 16-inch rims. Where product recommendations are stated, 185R15 rims range from 4.5 to 6.5 inches depending on product, 640-15 ranges from 4.00 to 5.00 inches, and 600-16 centers on 4.00 to 4.50 inches on the products that list a width range.

The practical takeaway is that a 1959 BMW buyer must identify the model first, because the 503 and 507 do not share a common rim diameter. After that, the decision becomes whether the car should stay with a more period-authentic bias-ply type or move to a radial within the correct size family. Checking the wheel diameter stamped on the wheel and the markings on the tire already fitted is the safest place to start before choosing a replacement.

On a 1959 BMW, 640-15 is a numeric bias-ply size. The 640 portion is the period width designation used in older American and European tire sizing practice, while the 15 identifies a 15-inch wheel diameter. For the 1959 BMW range covered here, 640-15 applies to the 503 and not the 507, and the available examples are bias-ply tires rather than radial tires.

That matters because a 640-15 belongs in the older style of tire sizing and usually appeals to owners preserving the look and feel associated with late-1950s fitment. It is not interchangeable with the 507's 16-inch tire family, and it should not be treated as just another 15-inch tire without checking the actual rim width range shown for the product you are considering. On a 503, it is the period-style route rather than the radial route.

No. The 1959 BMW 503 and 1959 BMW 507 use different tire sizes and different rim diameters. The 503 uses 15-inch tire sizes, offered here as 185R15 radial or 640-15 bias-ply, while the 507 uses 16-inch tire sizes, offered here as 175R16 radial or 600-16 bias-ply.

That split is important because year and make alone will not narrow the tire choice far enough on a 1959 BMW. If you are working from an inherited car, an older restoration, or a car with mixed records, verify the model and inspect the wheels before ordering replacement tires. Once the model is confirmed, the remaining choice is easier: select the correct wheel diameter first, then choose the construction type that suits how the car will be used.

For a 1959 BMW 503, the choice between 185R15 and 640-15 is mainly a choice between radial and bias-ply construction on the same 15-inch wheel diameter. The 185R15 options are radial tires, while the 640-15 options are bias-ply tires. Radials in this size include blackwall, narrow whitewall, and redline styles, and some 185R15 products carry H or V speed ratings. The 640-15 range stays in a more traditional bias-ply presentation, with whitewall options and period-style proportions.

A 503 being restored for period character will usually point toward 640-15, especially if appearance and original driving feel matter most. A 503 used more regularly on modern roads may lead an owner toward 185R15 because it keeps the correct 15-inch diameter while moving to radial construction. The key is not to treat them as universal across all 1959 BMWs, because this comparison applies to the 503 only; the 507 belongs to the 16-inch family instead.

1959 BMW tires are available in several sidewall treatments depending on size. The 185R15 radial choices for the 503 include redline, narrow whitewall, and blackwall versions. The 640-15 bias-ply choices for the 503 include wide whitewall and narrow whitewall versions. On the 507 side, the listed 600-16 bias-ply products include wide whitewall and blackwall styles.

Sidewall style affects the car's finished look almost as much as the wheel itself, especially on a late-1950s BMW with a lot of visual emphasis on body line and brightwork. Buyers aiming for a more formal grand touring presentation often lean toward whitewall styles, while a blackwall usually reads more understated and sporting. Event standards can vary, so if the car will be judged, match the sidewall treatment to the car's restoration goal and the market-specific presentation you are trying to recreate.

Several brands cover 1959 BMW fitments, but they are size-specific. In 185R15 for the 503, the listed brands are Coker Classic and Michelin. In 640-15 for the 503, the available brands are BFGoodrich and Firestone. In 600-16 for the 507, the listed brands are BFGoodrich, Coker Classic, Avon, and Firestone. Those brand names sit across both radial and bias-ply constructions depending on the size.

That means the brand question should come after the fitment question, not before it. Start by identifying whether you own a 503 or 507 and whether you want radial or bias-ply construction. Once those two decisions are made, the brand list narrows quickly and the remaining differences come down to sidewall style, speed rating where shown, and the rim-width range that matches your wheel. That approach avoids comparing brands that are not even in the same size family.

Rim width recommendations vary by size and by product within the 1959 BMW range. The 185R15 radial products for the 1959 BMW 503 list rim-width ranges from 4.5 to 6.5 inches depending on the tire. The 640-15 bias-ply products for the 503 span 4.00 to 5.00 inches. The 600-16 bias-ply products for the 1959 BMW 507 that publish a width range center on 4.00 to 4.50 inches.

Those ranges are a reminder that wheel diameter alone is not enough when you are fitting a collector car tire. If the car has original wheels, confirm the actual wheel width before selecting a tire, especially when comparing a radial with a bias-ply option for the same model. If the car has aftermarket wheels or restored wheels of uncertain origin, measure them directly so the tire's approved rim-width range and the wheel's true width agree.

Tube status depends on the exact size and product chosen for a 1959 BMW. The listed 185R15 radial products for the 1959 BMW 503 are marked TL, indicating tubeless construction. The bias-ply products shown for 640-15 and 600-16 are not marked with a tubeless designation in the same way, so buyers should confirm the sidewall marking and the wheel type before deciding whether a tube is needed.

That matters most on restored original wheels, because a tire's construction and a wheel's design both influence whether a tube setup is appropriate. A tubeless radial does not automatically mean every original wheel should be run without a tube, and a bias-ply tire should never be assumed one way or the other without checking the product marking. If the car still wears older wheels, this is a good point to consult a BMW marque specialist before final fitment.

A 1959 BMW should be stored in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Tires should be kept at the correct inflation pressure during storage, and the car should be rolled periodically or supported in a way that avoids prolonged loading on one contact patch. Bias-ply tires tend to flat-spot more readily during long static periods than radials, so storage habits matter even more when a 503 or 507 is kept mostly for occasional use.

Good storage practice protects both appearance and service life on a collector BMW. If the car will sit for months, clean the tires, keep them off wet concrete when possible, and avoid parking in a position where one side gets regular window light. When the car comes back into service, let the tires warm and round out gradually rather than expecting a long-stored bias-ply tire to feel fully settled in the first few miles.

Tire age usually matters more than mileage on a 1959 BMW, because cars like the 503 and 507 are often driven infrequently. A sensible rule is to evaluate the tires carefully once they reach five to seven years of age and to treat roughly ten years as the point where replacement deserves serious consideration even if the tread still looks good. The DOT date code on the tire sidewall is the practical way to confirm age.

A lightly used collector car can fool its owner into thinking the tires are still fresh because wear is minimal. Sidewall cracking, hardening, internal age, and long periods of inactivity can matter far more than miles traveled. If a 1959 BMW has older tires of uncertain age, the safest approach is to inspect them closely and replace them before they become the weak link in an otherwise careful restoration or touring plan.

Tires on a 1959 BMW should be inspected before every drive, with a more thorough inspection before any longer outing. Look for sidewall cracking, tread separation, cuts, bulges, irregular wear, and any sign that the tire is losing pressure over time. If the car uses a tube-type setup, include the valve stems and any tube-related pressure loss in that inspection routine as well.

A brief walk-around catches most tire issues before they become roadside problems, and that matters even more on a late-1950s BMW that may not be driven often enough for problems to reveal themselves gradually. Before a tour or show trip, check cold inflation pressure, inspect the spare, and make sure each tire still matches the intended size and construction for the car. Collector tires age quietly, so frequent inspection is part of normal ownership.

For a 1959 BMW 503, the period-correct construction type would have been bias-ply rather than radial in normal original-equipment context for the era. In the fitments covered here, that points to 640-15 as the bias-ply size associated with the 503, while 185R15 represents the radial alternative now available on the same 15-inch wheel diameter. No original-equipment brand should be assumed from modern replacement offerings alone.

That distinction matters when the goal is historical accuracy instead of simply keeping the car on the road. A concours-minded owner should confirm market, wheel, and restoration standard before choosing the final tire, because late-1950s European luxury cars can have nuance in presentation. Marque clubs, factory literature, and long-time BMW specialists are the right sources for trim- and market-specific confirmation once you know the car is a 503 and not a 507.

Correct tire fitment absolutely matters when a 1959 BMW is judged seriously. Size, construction type, sidewall style, and overall visual stance all influence whether the car reads as authentically restored. On a car of this era, a modern radial where a bias-ply presentation is expected, or the wrong whitewall treatment for the car's intended appearance, can stand out immediately even before a judge studies finer details.

The level of scrutiny depends on the event. A local casual show may place more emphasis on overall condition, while marque-specific or concours judging can be much stricter about whether the tire looks correct for the period and model. Owners should decide early whether the car is being restored for driving, touring, or judged authenticity, because that goal often settles the tire question faster than comparing brands alone.

Within the 185R15 radial fitment for the 1959 BMW 503, Michelin XVS and Coker Classic radial tires differ in sidewall styling, speed rating, and approved rim-width range. The Coker Classic 185R15 is offered as a redline radial and lists a 5.00 to 6.50 inch rim-width range with a 1355-pound load rating at 35 psi. Michelin XVS examples appear as narrow whitewall and blackwall versions, with H-rated and V-rated products and rim-width ranges spanning 4.5 to 6.5 inches depending on the specific tire.

That means the choice is not simply brand preference. One buyer may want the redline look, while another may need a narrow whitewall or a blackwall to match the car's restoration style. Speed rating may matter as part of the selection process as well, but wheel width should be checked first so the tire and wheel are paired correctly. For a 503, those practical differences are more useful than trying to reduce the decision to one brand being universally right.

1959 BMW tires can be suitable for highway use when the size, condition, inflation, and construction are all appropriate to the car. Among the listed products, 185R15 radial choices for the 503 include H-rated tires to 130 mph and V-rated tires to 149 mph, while one 600-16 product for the 507 is H rated to 130 mph. Bias-ply products without a stated speed rating should be treated according to the manufacturer's marking and used with the understanding that tire construction and road feel differ from a modern radial.

In practice, a healthy 1959 BMW's overall mechanical condition matters as much as the tire itself. Brakes, steering, suspension, wheel condition, and alignment all shape how secure the car feels at sustained speed. For regular touring, many owners prefer the predictability of a radial when the correct radial size exists for their model, while a bias-ply setup may be chosen for authenticity and period feel. Highway use starts with a full vehicle check, not just a speed rating.

Inflation pressure on a 1959 BMW should follow the vehicle's factory recommendation first, with the tire's own rated pressure and load information used as the tire-side reference rather than a substitute for factory settings. In the listed products, 185R15 includes an example rated at 1355 pounds at 35 psi, 640-15 products include 1190 pounds at 32 psi and 970 pounds at 32 psi depending on version, and 600-16 products include 1400 pounds at 32 psi on several offerings.

Those figures are not a command to inflate every tire to the maximum listed value. They show the pressure associated with the tire's rated load capacity. A 1959 BMW owner should consult the car's original handbook or marque references for the intended operating pressure, then make sure the selected tire is being used within its published limits. Never transfer a pressure figure from a 503 tire to a 507 tire, or from one size family to another, just because they are from the same year and make.

Before a longer drive in a 1959 BMW, inspect every tire for cracking, cuts, bulges, exposed cords, and uneven wear, and verify cold inflation pressure on all four tires plus the spare. Confirm that the car is wearing the correct size family for its model, with 15-inch tires on a 503 and 16-inch tires on a 507. If the setup uses tubes or older wheels, pay extra attention to valve stems, pressure retention, and any signs of leakage around the wheel and tire assembly.

Tires are only one part of the trip preparation on a late-1950s BMW. A good pre-drive routine also includes checking wheel fasteners, brake feel, fluid levels, steering response, and the condition of belts and hoses. Collector cars often sit long enough for age-related issues to develop between drives, so a ten-minute inspection before departure is far cheaper than discovering a weak tire or wheel problem far from home.