1957 Borgward Hansa Tires

The 1957 Borgward Hansa uses two primary tire sizes: 195R15 in radial construction and 670-15 in bias-ply construction. Both sizes are tied to the Hansa 2400 Series and both use a 15-inch rim, so the basic fitment question is not just diameter but also which tire construction and sizing format is currently on the car.

That matters because a 670-15 bias-ply and a 195R15 radial are not simply two ways of writing the same tire. Before choosing, confirm the actual wheel width, the tires already mounted on the car, and whether the Hansa has been changed from its earlier setup. On a collector car, the right answer often depends on appearance goals as much as road use.

The tire fitments associated with the 1957 Borgward Hansa use a 15-inch rim diameter. That applies to both the 195R15 radial size and the 670-15 bias-ply size, so wheel diameter remains consistent even though the tire constructions and sizing formats differ.

Rim diameter alone does not settle the full fitment decision. Wheel width still needs to be confirmed, especially if the car has replacement wheels or if a radial alternative is being considered in place of a bias-ply tire. Looking at the wheel stampings, the existing tire size, and available clearance around the fender and suspension helps prevent choosing a size that is only partly compatible.

The 1957 Borgward Hansa 2400 Series is associated with both 195R15 radial and 670-15 bias-ply tire sizes. Rather than separating into different sub-model tire applications, the choice revolves around which construction type and tire format the individual car is using or is being changed to.

That means the most useful check is the setup on the actual car. A Hansa still wearing period-style bias-ply tires may point the buyer toward 670-15 options, while a car already converted to radial construction may be better matched to 195R15. The wheel itself should be verified before any change, since matching the 15-inch diameter does not answer every fitment question.

On the 1957 Borgward Hansa, 670-15 is a bias-ply tire size. It uses the older numeric sizing system common to the era, and it is the size with the broadest period-style product assortment, including blackwall, narrow whitewall, and wide whitewall choices across several classic tire series.

That makes 670-15 especially relevant for owners who want a traditional presentation or want to stay with the vintage construction already on the car. Even so, choosing within that size still requires attention to wheel width and the specific product's fitment details. A tire can be correct in nominal size and still call for a closer look at the wheel it will be mounted on.

Radial equivalents for 670-15 include 195R15 as an 80-series metric radial, P205/75R15 as a 75-series P-metric radial, P215/70R15 as a 70-series P-metric radial, and 670R15 as a bias-look radial equivalent. These options give the 1957 Borgward Hansa owner several radial-format paths without changing away from the car's 15-inch rim diameter.

The differences lie in sizing convention and overall presentation rather than a simple yes-or-no fit answer. A 5-7 inch rim-width range is associated with those equivalents, and the final choice should be checked against the car's wheel width, clearance, and intended use. A radial equivalent is a useful alternative to evaluate, but it still needs to suit the actual wheel and chassis setup.

Start by confirming the wheel diameter and actual wheel width on the car, then compare the radial size being considered against the current 670-15 bias-ply setup. For the 1957 Borgward Hansa, radial alternatives tied to 670-15 include 195R15, P205/75R15, P215/70R15, and 670R15, but each should be treated as a fitment choice to verify rather than an automatic swap.

Steering clearance, fender room, suspension condition, and the car's present ride height all deserve a quick check before making the change. It is also worth deciding whether the goal is a traditional visual presentation or a radial-format driving setup, since that will influence whether a conventional metric radial or a bias-look radial makes the most sense for the car.

The main considerations are keeping the correct 15-inch 670-15 bias-ply size, matching the tire to the wheel width, and deciding what visual style suits the car. This size is available in several classic series and from multiple brands, so the decision usually comes down to presentation, construction consistency, and whether the product's specifications suit the way the Hansa will be used.

Sidewall treatment is a major part of that decision because blackwall, narrow whitewall, and wide whitewall versions are all available. It also helps to compare load figures where they are stated, such as 1450@32 psi, 1550 @32 psi, or 1530@45 psi, instead of assuming every 670-15 is built to the same specification. That extra check is especially useful on a heavier European sedan.

For the 1957 Borgward Hansa, the 670-15 bias-ply product range includes blackwall, narrow whitewall, and wide whitewall sidewall styles. Those choices appear across several brands and series, giving the owner flexibility to shape the car's overall look without stepping outside the established 15-inch tire fitment.

The best sidewall choice depends on the visual direction of the car rather than a universal rule. A blackwall tends to give a restrained, utilitarian look, while narrow and wide whitewalls move the Hansa toward a more formal mid-century presentation. Since sidewall style does not replace fitment checks, the final choice should still match the wheel and the exact 670-15 product specification being considered.

Available 670-15 tires for the 1957 Borgward Hansa come from Firestone, US Royal, Coker Classic, Universal Vintage Tire, BFGoodrich, Excelsior, Avon, Goodyear, and STA. Those brands cover a broad range of vintage bias-ply choices, including different sidewall appearances and several period-style tire series.

Brand selection should be treated as one part of the decision rather than the whole decision. It makes sense to compare the exact tire series, sidewall treatment, wheel-width specification, and any stated load capacity alongside the brand name. On a collector car like this, the most suitable tire is often the one that best balances appearance, fitment details, and the way the car will actually be driven.

For a period-style 1957 Borgward Hansa, 670-15 bias-ply is the natural starting point because it preserves the vintage numeric sizing format and opens the widest range of traditional-looking tire choices. Within that size, the look can be tailored through blackwall, narrow whitewall, or wide whitewall versions from several classic bias-ply series.

The right choice depends on how the car is being restored and what visual character you want it to present. Exact originality claims should be checked against marque-specific references, period photos, or restoration documentation for the individual car. A period-style result does not always require the same sidewall treatment on every Hansa, so appearance research is worth doing before committing.

Tire construction changes the visual character of a restored 1957 Borgward Hansa more than many buyers expect. A 670-15 bias-ply keeps the car in a distinctly vintage sizing and construction format, while a 195R15 radial moves the look toward a later, more modern tire presentation even though the rim diameter stays at 15 inches.

That difference becomes even more noticeable when sidewall style enters the decision. Whitewall width, blackwall simplicity, and the shape associated with bias-ply versus radial construction can all influence how authentic or updated the car appears. Owners who want a radial option without completely abandoning a traditional look may also want to evaluate the 670R15 bias-look radial carefully.

Yes, modifications can change tire fitment on a 1957 Borgward Hansa even when the tire still carries a correct-looking 15-inch size. Aftermarket wheels, wheel-width changes, altered ride height, suspension work, or body repairs can all affect how a 195R15 radial or 670-15 bias-ply sits in the wheel opening and clears surrounding components.

A car that has been restored over many decades may not match its earlier wheel setup exactly, so measuring matters. Check wheel width, look for rubbing points at full steering lock, and inspect clearance at the fender and suspension before settling on a size or construction change. That simple review can prevent problems that are easy to miss when the car is standing still.

Before driving a 1957 Borgward Hansa on new tires, inspect the wheels for the correct 15-inch diameter and sound condition, verify that the tires are seated properly, and confirm that there is no interference at the fenders, steering components, or suspension. Tire pressure should also be checked carefully, along with valve stems and any signs of uneven wheel or brake-drum condition.

A short, cautious first drive is worthwhile because it can reveal pull, vibration, rubbing, or clearance issues that are not obvious in the garage. It also helps to recheck pressure after the initial drive and confirm that lug hardware is secure. Collector cars often sit for long periods, so a fresh tire installation is the right time to inspect the rest of the rolling setup too.

670-15 tires on a collector 1957 Borgward Hansa should be maintained with regular pressure checks, routine visual inspection, and careful storage habits. Look closely for sidewall cracking, cuts, bulges, uneven wear, and slow air loss, especially if the car is driven only occasionally. Bias-ply tires on low-use collector cars deserve attention even when tread depth still looks serviceable.

Storage conditions matter almost as much as mileage. Keeping the car away from prolonged sunlight, excess heat, damp conditions, and ozone sources such as electric motors helps preserve the rubber over time. It is also smart to inspect the tires before each drive rather than assuming a garage-kept car is automatically road-ready, since age-related deterioration can develop with very little use.