1955 DKW F91 Tires

The 1955 DKW F91 uses two applicable tire sizes: 560-15 in bias-ply construction and 155R15 in radial construction. Both sizes are tied to a 15-inch rim, so the key difference is not wheel diameter but the tire format and construction style you want on the car.

That means the first decision is whether the F91 is staying with a traditional bias-ply setup or moving to a radial-format alternative. Once that is settled, compare wheel width, overall tire presentation, and the car’s current setup, especially if it has been modified or is no longer on its original wheels.

The applicable tire sizes for a 1955 DKW F91 use a 15-inch rim. Both the 560-15 bias-ply fitment and the 155R15 radial fitment are built around that same rim diameter, which keeps the wheel-size question relatively simple compared with vehicles that use multiple diameters.

Rim diameter is only part of the fitment picture, so it is still worth confirming the actual wheel width before choosing a tire. That is especially important when comparing bias-ply and radial options, because the tire may share the same 15-inch diameter while having different rim-width preferences and overall proportions.

Yes. The 1955 DKW F91 Base uses the same two applicable sizes as the model overall: 560-15 in bias-ply construction and 155R15 in radial construction. There is no separate sub-model-only tire size here, so the fitment question stays focused on construction and tire style.

That consistency helps narrow the choice, but it does not remove the need to inspect the car itself. An F91 with replacement wheels or previous suspension work should still be measured carefully, and a restoration-minded owner may also want to decide whether blackwall, narrow whitewall, or wide whitewall presentation suits the car’s intended look.

On the 1955 DKW F91, 560-15 is a numeric bias-ply tire size. It uses the traditional older sizing format, with the leading number representing the nominal section width family and the 15 indicating the rim diameter. That makes it the vintage-construction choice among the two applicable sizes.

Choosing 560-15 usually comes down to preserving a period-style look and staying with bias-ply construction. Before settling on it, confirm the wheel setup on the car, since some F91s may now wear later wheels or tires, and make sure the sidewall style you choose matches the appearance goal you have in mind.

Radial equivalents for 560-15 include 155R15 and 560R15. The 155R15 is the 80-series metric radial equivalent, while 560R15 is the bias-look radial equivalent for buyers who want a radial construction but a more traditional tire presentation.

Those two options serve different purposes, so they should be evaluated against the car’s wheels and intended use rather than treated as automatic substitutions. A 4 to 5 inch recommended rim-width range applies to this equivalent path, and overall dimensions, body clearance, and the condition of the suspension should all be checked before converting.

A 1955 DKW F91 can be approached either way because both a 560-15 bias-ply fitment and a 155R15 radial fitment are used on the car. The best choice depends less on the year and more on what matters most to you: a traditional vintage presentation or a radial-format setup.

Bias-ply and radial tires can change the look and character of an older car, so the decision should match the purpose of the vehicle. A restoration-oriented F91 may lean toward 560-15, while a road-use-focused car may lead you to evaluate 155R15 or 560R15 after confirming wheel width, clearance, and the condition of the steering and suspension.

Start with the basics: make sure the car is actually set up for the 560-15 bias-ply size on a 15-inch wheel. Then compare the available construction details and product character within that size, including blackwall, narrow whitewall, or wide whitewall presentation, along with the tire series and rim-width specifications attached to each option.

The right choice depends on how the F91 will be used and how you want it to look. A cleaner blackwall may suit a simpler vintage appearance, while whitewall versions change the car’s visual character noticeably. It also helps to compare load figures where they are stated, especially if the car is driven regularly rather than displayed.

The 1955 DKW F91 has sidewall variety depending on size and construction. In 560-15 bias-ply, choices include blackwall, narrow whitewall, and wide whitewall. In 155R15 radial, the available products are blackwall designs, which gives the radial side of the fitment a more understated and European-style appearance.

Sidewall style matters because it changes the visual balance of a small 1950s car more than many owners expect. The cleaner blackwall look keeps attention on the wheel and body shape, while whitewalls create a more decorative period-style presentation. Match that decision to the car’s trim, restoration goal, and how authentic or personalized you want the finished look to feel.

Tires for the 1955 DKW F91 are available from several brands across its two fitment paths. Radial choices in 155R15 include Firestone, Michelin, Avon, and Vredestein. Bias-ply choices in 560-15 include Firestone, US Royal, Coker Classic, and Pro-Trac.

Brand is only one part of the decision, so it helps to compare each tire’s series, sidewall style, construction, and wheel-width suitability at the same time. Two tires may share the same basic size but appeal to very different goals, especially when one owner wants a clean roadgoing radial and another wants a more restoration-oriented bias-ply look.

For a period-style 1955 DKW F91, the 560-15 bias-ply size is the natural starting point because it keeps the car in a vintage numeric format and traditional construction. That size is also available in several visual treatments, including blackwall, narrow whitewall, and wide whitewall, which gives the owner room to shape the final presentation.

A restoration-focused decision should look beyond size alone and consider how the tire supports the car’s overall character. If exact originality matters, it is wise to compare the intended choice with marque references, period photos, or other vehicle-specific historical guidance. That extra step helps separate a broadly period-style look from a truly exact restoration approach.

Tire construction changes the look of a restored 1955 DKW F91 as much as it changes the driving feel. A 560-15 bias-ply tends to preserve the older sizing language and vintage visual character, while a 155R15 radial introduces a more modern tire format even though it still fits the same 15-inch rim diameter.

That difference is important on a compact 1950s car, where tire shape and sidewall treatment are easy to notice. A radial can still look restrained, especially in blackwall form, but a bias-ply or bias-look radial generally aligns more closely with a traditional restoration presentation. The best choice depends on whether appearance or modernized road use takes priority.

Yes. Even though the 1955 DKW F91 uses 15-inch fitments, modifications can still change whether a chosen tire is appropriate for the car. Aftermarket wheels, altered wheel width, suspension changes, or bodywork repairs can all influence clearance, stance, and how well a 560-15 or 155R15 setup suits the vehicle.

A modified F91 should be checked at the wheel opening and through the steering range before settling on any tire. It also helps to verify the actual wheel width already on the car, since many older vehicles no longer wear their original rims. That step is especially important when moving between bias-ply and radial constructions.

Before driving a 1955 DKW F91 on new tires, inspect the wheels for damage or rust, confirm the rim diameter and width, and make sure the tires are seated and inflated correctly. It is also smart to look over the steering and suspension so the new tires are not being asked to compensate for worn mechanical parts.

Once the car is on the ground, check clearance at full steering lock and under normal suspension movement. A short, careful road test can reveal rubbing, vibration, or pull that should be corrected early. Older collector cars often sit for long periods, so this is also the right time to confirm there are no leaks, cracks, or age-related issues elsewhere.

Collector-car tires on a 1955 DKW F91 should be inspected regularly even if the car is driven only occasionally. Check air pressure, tread condition, sidewall cracking, cuts, bulges, and any sign of slow air loss. Low-use vintage cars can develop tire issues through age and storage conditions long before tread wear becomes the problem.

Storage habits matter almost as much as miles. Keeping the F91 away from prolonged sunlight, excess heat, moisture, and ozone sources helps protect both bias-ply and radial tires. It is also worth rolling the car periodically or avoiding long static loading on one spot, especially when preserving appearance and casing condition is part of long-term ownership.