1964 Auto-Union came from a period when the revived German marque was building compact front-drive cars with a strong emphasis on economy, practicality, and European road manners. The Auto-Union 1000 carried forward that character, and its tire choice reflects a distinctly European sizing convention rather than the numeric or alphanumeric systems more familiar on many American classics. For 1964 Auto-Union, the decision is straightforward because the full model range covered here uses one radial size, 155R15, on the same 15-inch rim diameter. The main thing to confirm before choosing a tire is that your car is the 1000 and that you want the right 155R15 specification for your intended use.
Which Tire Size Is Right for Your 1964 Auto-Union
One tire size covers 1964 Auto-Union vehicles here, and it is shared across the full model range. That makes the choice less about comparing multiple fitments and more about understanding what 155R15 means, which version of that radial suits your driving plans, and whether tube type or tubeless construction matters for your wheel setup. Getting that distinction clear before choosing a product saves time and helps match the tire to the car correctly.
Year(s): 1964|Fit(s): 1000|Construction: Radial|Rim: 15 in
155R15 is a Euro-metric radial size with a nominal section width of 155 millimeters and a 15-inch rim diameter; with no aspect ratio stated, this format conventionally refers to an 80-series radial. Firestone and Michelin offer this size in blackwall form, and tube status and speed rating vary by product: some versions are tubeless, one is tube-type, and speed markings include T and H alongside versions without a speed letter shown in the size marking. For a 1964 Auto-Union 1000, this is the model-specific fitment for the year and make, and the real choice is between a more straightforward period-style radial and specialty Michelin variants for buyers who want a particular road feel or era-correct European character.
One model is covered for 1964 Auto-Union. Because the year and make use a single shared tire size, the fitment question is simple, while the more nuanced choice comes down to the type of radial tire you want on the car and how closely you want to echo its original European character. Select the model below for model-specific fitment history and products.
1964 Auto-Union 1000
The 1964 Auto-Union 1000 was part of the marque's compact front-drive family, known for its tidy proportions and distinctly German approach to small-car engineering. Its tires mount on 15-inch wheels, and the fitment centers on a single 155R15 radial size that suits the car's lightweight, European touring character.
Four products are available across one tire size for 1964 Auto-Union vehicles. The 155R15 size includes four radial options from Firestone and Michelin, all with blackwall sidewalls; tube type, tubeless construction, and speed ratings can vary between products.
These FAQs focus on the 1964 Auto-Union's single 155R15 radial fitment, what that Euro-metric size means, how tube-type and tubeless versions differ, and what collectors should check for road use, storage, and restoration-minded authenticity.
Size Basics & Fitment
What tire sizes fit 1964 Auto-Union vehicles?
1964 Auto-Union vehicles covered here use one tire size: 155R15, and it applies to the 1964 Auto-Union 1000. All of the available products for that size mount on a 15-inch rim. Where rim-width guidance is given, 155R15 fits rims from 4.00 to 5.50 inches wide.
That makes 1964 Auto-Union fitment much simpler than many year-make pages where different models use different diameters or constructions. If your car is a 1000 and still wears its original wheel diameter, your next step is not choosing between different fitment sizes, but selecting the 155R15 version that matches your wheel setup, intended driving, and preference for tube-type or tubeless construction.
What does 155R15 mean on a 1964 Auto-Union tire?
On a 1964 Auto-Union tire, 155R15 is a Euro-metric radial size. The 155 is the nominal section width in millimeters, the R identifies radial construction, and the 15 is the wheel diameter in inches. Because no aspect ratio is printed in the basic size, this format conventionally corresponds to an 80-series radial profile.
That code tells you this is a later European-style sizing system rather than an older American numeric or alphanumeric bias-ply designation. For a 1964 Auto-Union 1000, reading the full sidewall still matters because some 155R15-family tires also carry speed and service details such as 82T, 82H, TT, or TL, and those markings can influence which version makes the most sense for your car and wheels.
Do all 1964 Auto-Union models use the same tire size?
Yes. The 1964 Auto-Union coverage here centers on the Auto-Union 1000, and that model uses 155R15 throughout this year and make grouping. There is no second rim diameter or alternate factory-style fitment in this selection to sort through.
That is useful for buyers who know they have a 1964 Auto-Union but have not yet looked closely at the sidewall. Even with one shared size, it is still worth checking the actual tire and wheel on the car before replacement, especially on imported or long-owned collector cars that may have seen wheel changes, old European replacements, or mixed tube and tubeless service over the years.
Buying the Right Tire
What sidewall styles are available for 1964 Auto-Union tires?
1964 Auto-Union tires in 155R15 are available in blackwall form. That blackwall appearance suits the small European-car character of the Auto-Union 1000 and aligns well with the understated look most German compacts of the period carried.
For a restoration-minded owner, blackwall is usually the most natural visual choice on a 1964 Auto-Union unless there is strong market-specific evidence for something else on an individual car. Since the visual style is consistent across the available 155R15 options, the real buying decision usually comes down to brand, tread family, speed marking, and whether you need a tube-type or tubeless tire for the wheels you plan to use.
What brands make tires for 1964 Auto-Union vehicles?
Firestone and Michelin both make 155R15 tires for 1964 Auto-Union vehicles. Firestone offers the F560 Radial in this size, while Michelin offers the Michelin X, XAS, and XAS-FF. All are radial tires sized for the Auto-Union 1000's 15-inch fitment.
Those brand choices give 1964 Auto-Union owners a useful spread of period-flavored European radial options rather than forcing a single look or driving character. Buyers who want a straightforward classic radial can compare that against Michelin's more specialized vintage-European offerings, then narrow the choice by checking whether a given tire is tube-type or tubeless and whether its speed marking matches the way the car will actually be driven.
What is the difference between Michelin X and Michelin XAS for the 1964 Auto-Union?
For the 1964 Auto-Union, both Michelin X and Michelin XAS are 155R15-family radial choices, but they differ in sidewall marking and service details. Michelin X appears as 155R15 82T TL, making it a tubeless T-rated version, while Michelin XAS appears as 155HR15 82H TT, making it a tube-type H-rated version. The XAS also carries a stated rim-width range of 4.00 to 5.50 inches.
That means the choice is not simply one Michelin versus another. A 1964 Auto-Union owner should look at wheel condition and intended use first: the X can appeal to someone wanting a tubeless classic radial in the stock size, while the XAS may suit a buyer seeking a more specialized vintage-European specification and who is prepared to run the tube-type setup it calls for.
Fitting & Setup
What rim width do 1964 Auto-Union tires require?
For 1964 Auto-Union 155R15 tires, the published rim-width range is 4.00 to 5.50 inches on the products that carry that specification. All of the available tires in this fitment mount on 15-inch rims, so diameter is consistent even where a width range is not printed on every version.
That gives owners a useful benchmark when checking original wheels or period replacements. Before choosing a tire, measure the actual wheel or confirm its stamped dimensions, because correct rim width supports proper tread shape, sidewall behavior, and clearance. On a small European car like the Auto-Union 1000, staying within the intended width range is especially helpful for preserving the steering feel the car was designed around.
Do 1964 Auto-Union tires require inner tubes?
1964 Auto-Union 155R15 tires do not all use the same tube arrangement. Tube status varies by product: Michelin XAS is marked TT for tube type, Michelin XAS-FF and Michelin X are marked TL for tubeless, and some 155R15 versions do not show a TT or TL marking in the size line.
That variation matters because the wheel, valve stem arrangement, and condition of the rim all influence whether a tubeless tire can be used as intended. If your 1964 Auto-Union still has original-style wheels, inspect the rims carefully and match the tire's service type to the wheel setup rather than assuming every 155R15 radial is interchangeable from a tube standpoint.
Maintenance, Storage & Longevity
How should I store a 1964 Auto-Union when the tires are fitted?
A 1964 Auto-Union 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 accelerate rubber aging. Keep the tires properly inflated, avoid prolonged contact with standing moisture, and move the car periodically so the tires are not parked on one footprint for months at a time.
Even though the Auto-Union uses radial tires in this fitment, collector cars still benefit from careful storage habits because low annual mileage can hide age-related deterioration. If the car will sit for an extended season, many owners either roll it occasionally or support it in a way that reduces sustained load. That helps protect the sidewalls, maintain shape, and preserve the driving feel when the car goes back on the road.
How long do tires on a 1964 Auto-Union typically last?
Tires on a 1964 Auto-Union usually age out before they wear out, especially on a collector car that sees modest annual mileage. A sound rule is to begin careful evaluation around five to seven years of age and to treat roughly ten years as the point where replacement deserves serious consideration regardless of tread depth. The DOT date code on the sidewall is the best guide to actual tire age.
That matters because a 1964 Auto-Union 1000 is light and easy to drive on tires that may still look visually acceptable long after the rubber has hardened. If the car is used for tours or highway travel, age becomes even more important than remaining tread. A tire with plenty of tread but advanced age can compromise ride quality, braking feel, and confidence in ways that are easy to miss until the car is under load.
How often should tires on a 1964 Auto-Union be inspected?
Tires on a 1964 Auto-Union should be inspected before every drive and again before any longer outing. Look for sidewall cracking, tread separation, cuts, punctures, bulges, irregular wear, and loss of air pressure. If your chosen 155R15 setup uses tubes, include the valve stems and any signs of slow leakage in the inspection routine.
Frequent checks are especially worthwhile on a compact vintage car because small changes in tire condition can have an outsized effect on steering response and ride quality. A short walk-around and pressure check take only a few minutes, but they can reveal aging rubber or a slow leak before it becomes a roadside problem. Many collector owners pair tire inspection with a quick look at fluid levels and brake feel before each drive.
Restoration & Authenticity
What tires were originally fitted to the 1964 Auto-Union 1000?
A 1964 Auto-Union 1000 belongs to an era when European passenger cars were already well into radial-tire use, and the stock-size fitment here is 155R15 in radial construction. That makes a 155R15 radial the right starting point for an owner seeking an authentic period-appropriate replacement. Original-equipment branding could vary by market and delivery history, so size and construction are the most dependable baseline.
For restoration work, that means getting the size family and visual character right before worrying about finer details. A blackwall 155R15 radial looks appropriate on a compact German car of this period, and owners pursuing high-level originality should compare sidewall markings, tread style, and service type against factory literature or marque-club guidance for their exact market version before making the final decision.
Does correct tire fitment matter for showing a 1964 Auto-Union?
Yes, correct tire fitment matters when a 1964 Auto-Union is judged for authenticity. Show standards often pay attention to whether the tire size matches the car's period fitment, whether the construction type suits the era, and whether the sidewall appearance fits the way the car would have been presented when new. On a compact European car, an obviously modernized sidewall or an incorrect size can stand out quickly.
For a 1964 Auto-Union 1000, staying with a 155R15 blackwall radial keeps the overall look in the right historical lane. Event-specific judging can still differ, especially between preservation classes and touring-oriented classes, so serious exhibitors should check the standards used by the hosting club or concours. That extra step is often more valuable than chasing small details that a particular event may not score at all.
What is the difference between Michelin XAS and Michelin XAS-FF for the 1964 Auto-Union?
For the 1964 Auto-Union, Michelin XAS and Michelin XAS-FF are both 155HR15 82H radial tires for 15-inch wheels, and both carry a 4.00 to 5.50 inch rim-width range. The practical difference in the sidewall marking shown here is service type: XAS is marked TT for tube type, while XAS-FF is marked TL for tubeless use. Both are blackwall tires.
That distinction can matter in restoration because some owners want to stay close to an original wheel setup, while others prefer a tubeless-compatible approach when the wheel allows it. Since both versions preserve the same basic size family and H speed marking, the decision often comes down to wheel design, rim condition, and how strictly you want to mirror an earlier service configuration on the car.
Safety & Road Use
Are 1964 Auto-Union tires safe for highway driving?
Yes, 1964 Auto-Union tires can be suitable for highway driving when they are in good condition, correctly matched to the wheel, and used within their service limits. In 155R15, speed markings include T at 118 mph and H at 130 mph on products where a speed rating is shown. Those ceilings are well above normal U.S. highway speeds.
On a 1964 Auto-Union 1000, the tire's rated capability is only part of the picture. Brake performance, suspension condition, steering play, and the general realities of a 1960s compact car matter just as much on modern roads. Before a longer highway trip, make sure the tires are properly inflated, age-appropriate, and free of damage, then treat the car as the vintage machine it is rather than driving it by modern-vehicle expectations.
What inflation pressure should I use for 1964 Auto-Union tires?
Inflation pressure for 1964 Auto-Union tires should be set with both the car and the tire in mind. One 155R15 option carries a maximum load figure of 1045 pounds at 44 psi, but that is a tire rating reference rather than a universal running pressure for every 1964 Auto-Union. Factory operating pressure should come from the owner's manual, door-jamb information if present, or marque literature for the Auto-Union 1000.
That distinction is important because collector cars often ride and steer poorly when inflated to a tire's sidewall maximum instead of the vehicle's intended service pressure. Use the vehicle recommendation as your baseline, then confirm that the tire you choose is capable of carrying the car safely at that pressure. If you change between tube-type and tubeless versions, recheck pressure retention after installation and during the first few drives.
What should I check before taking a 1964 Auto-Union on a longer drive?
Before taking a 1964 Auto-Union on a longer drive, inspect each tire for sidewall cracking, weather checking, cuts, punctures, bulges, and uneven tread wear. Confirm cold inflation pressure, make sure valve stems are sound, and check the spare as carefully as the four road tires. If your 155R15 setup uses a tube-type tire, pay extra attention to valve-stem condition and any signs of slow air loss.
A longer trip in a vintage Auto-Union also deserves a broader pre-drive check that includes brakes, steering, wheel bearings, fluid levels, lights, and charging health. Tires are the first contact point with the road, but they are only one part of roadworthiness on a sixty-year-old car. A careful inspection routine helps you catch small issues in the garage rather than discovering them when the car is far from home.