1952 Mercedes-Benz 170 Tires

The 1952 Mercedes-Benz 170 uses more than one tire size, depending on the exact sub-model. The 170 D, Da & Db and the 170 V, Va & Vb use 550-16 bias-ply tires, while the 170 S & Sb appear with either 640-15 bias-ply or 175R15 radial sizing on a 15-inch rim.

That means the first step is identifying the exact 170 variant and confirming the wheel diameter already on the car. A 16-inch car and a 15-inch car are not solving the same tire question, and the 170 S & Sb add a construction choice as well. Checking the actual wheels before ordering helps avoid mixing 15-inch and 16-inch fitments.

A 1952 Mercedes-Benz 170 can use either a 16-inch or a 15-inch rim, depending on the sub-model and tire size. The 550-16 fitment uses a 16-inch rim, while both 640-15 and 175R15 use a 15-inch rim. Rim diameter is one of the main distinctions across this model family.

That makes wheel confirmation essential before choosing a tire. The safest approach is to read the wheel size already on the vehicle and match it to the correct sub-model fitment path. If the car has been changed over the years, especially with replacement wheels, the actual rim diameter matters more than assumption based on model name alone.

No, the 1952 Mercedes-Benz 170 sub-models do not all use the same tire size. The diesel and V-series variants use 550-16 bias-ply tires, while the 170 S & Sb use 15-inch fitments and may appear with either 640-15 bias-ply or 175R15 radial sizing.

This variation matters because the tire decision starts with sub-model identification, not just the model family name. It also affects wheel diameter, construction type, and the range of replacement options you can reasonably consider. On an S or Sb, confirming whether the car is set up for a 15-inch bias-ply or a 15-inch radial arrangement is especially important before comparing products.

Radial equivalents for 640-15 include 175R15 as the 80-series metric radial option, P175/75R15 as the P-metric 75-series alternative, and P185/70R15 as the P-metric 70-series alternative. These sizes provide radial comparison points for the 15-inch 640-15 application rather than additional primary bias-ply fitments.

Each option uses the same 15-inch rim diameter, but that does not make every conversion automatic. The recommended rim width range for these equivalents is 5 to 6 inches, and the vehicle should also be checked for overall dimensions, steering clearance, and body clearance. On a restoration-minded car, construction choice can also change the look and feel of the finished setup.

The answer depends on the sub-model, the wheel setup, and the goal for the car. The 1952 Mercedes-Benz 170 family includes traditional bias-ply fitments in 550-16 and 640-15, while the 170 S & Sb also appear with a 175R15 radial fitment. Both constructions are part of the tire conversation for this model line.

A bias-ply choice preserves a more traditional presentation and construction style, which matters to many restoration-oriented owners. A radial path may make sense on the 15-inch S or Sb application when the wheel setup supports it and the owner wants a radial-format tire. The smart approach is to confirm wheel diameter first, then choose the construction that matches how the car will be used.

Start by confirming that the car is a 15-inch application using the 640-15 size, because that is where the stated radial equivalents apply. The available radial alternatives are 175R15, P175/75R15, and P185/70R15, with a recommended rim width range of 5 to 6 inches for the equivalent setup.

Beyond rim width, inspect the actual wheel condition, verify that the tire clears the fenders and steering range, and consider the car's suspension condition before changing construction. A vehicle that has been modified or sits differently than stock deserves extra attention. Keeping the original bias-ply size may still be the better route when traditional appearance and period-style setup are the priority.

Start with the correct size for the exact sub-model and wheel diameter, because 550-16 and 640-15 do not serve the same 1952 Mercedes-Benz 170 applications. After that, compare construction, sidewall style, brand, and tire series. Both sizes are offered as bias-ply products, and the available choices differ in visual presentation and wheel-width specifications.

A buyer focused on a traditional look may lean toward blackwall or whitewall styling that suits the car's restoration theme, while a road-use buyer may pay closer attention to the wheel-width range and load figures shown on individual products. It is also worth checking whether the car still wears its original wheel setup or has been changed over time.

Sidewall options for 1952 Mercedes-Benz 170 tires include blackwall, wide whitewall, and, in the 640-15 size, a narrow whitewall choice as well. The 550-16 offerings are available in blackwall and wide whitewall, while 640-15 opens up a broader range of whitewall presentation on top of standard blackwall options.

That gives the car owner room to shape the finished look without changing the underlying primary size. Blackwalls tend to keep the appearance restrained and mechanical, while whitewall treatments create a more formal restoration-oriented presentation. Matching the sidewall style to the specific body and trim theme usually matters more visually than simply picking the first available tire in the correct size.

Tires for the 1952 Mercedes-Benz 170 are available from Excelsior, Avon, BFGoodrich, and Firestone across the applicable 550-16 and 640-15 bias-ply sizes. The brand mix varies by size, but these names cover the main options visible for the model's primary fitments.

Brand selection is most useful when paired with the other distinctions that actually affect the finished result, such as sidewall style, tire series, rim-width compatibility, and whether the car uses a 15-inch or 16-inch wheel. Rather than treating brand alone as the decision, compare the whole package in the correct size for the exact sub-model and intended appearance.

A period-style choice starts with retaining the proper primary size for the specific sub-model. On the 1952 Mercedes-Benz 170, that means 550-16 bias-ply for the D and V-series cars, or 640-15 bias-ply for S and Sb cars using the 15-inch bias-ply setup. Those bias-ply sizes provide the most traditional starting point for the vehicle's era.

From there, the appearance decision usually comes down to sidewall treatment and brand presentation rather than changing size. Blackwall keeps the look restrained, while whitewall options can create a more formal mid-century finish. If exact originality matters beyond a period-style presentation, compare the tire choice against marque references, surviving examples, or restoration records specific to the car.

Construction changes the visual character of the car as well as the driving setup. The 1952 Mercedes-Benz 170 family includes bias-ply fitments in 550-16 and 640-15, and those preserve the traditional proportions and presentation associated with a postwar car of this type. The 170 S & Sb also bring a radial-format 175R15 into the conversation on 15-inch wheels.

For many restorations, bias-ply construction supports the more authentic-looking stance and sidewall shape people expect from the period. A radial choice may still be appropriate when the goal includes modernized road use, but it can change the visual impression of the finished car. That is why construction should be treated as both a fitment decision and an appearance decision.

Yes, modifications can affect tire fitment on a 1952 Mercedes-Benz 170, especially because this model family already spans both 15-inch and 16-inch wheel applications. If the car has aftermarket wheels, altered suspension height, brake changes, or bodywork differences, the original size reference may no longer tell the whole story.

That is why the wheel's actual diameter and width should be checked before choosing a replacement tire. Clearance at full steering lock and through suspension movement also matters, particularly when considering a radial alternative for a 640-15 application. Even a correct-looking size deserves verification when the vehicle has moved away from its original wheel and suspension setup.

Before road use, inspect the wheels for damage or corrosion, confirm that the tire size matches the car's sub-model and rim diameter, and check that all tires are inflated properly for the setup being used. It is also wise to look over the valve stems, bead seating, and visible clearance around fenders and steering components.

A collector car that spends long periods parked deserves extra attention once it is back on the road. Recheck pressure after the first drive, listen for rubbing during turns, and watch for any signs of uneven stance or contact. On an older Mercedes-Benz, tire fitment and basic mechanical condition work together, so suspension wear should not be ignored.

Tires on a collector 1952 Mercedes-Benz 170 should be inspected regularly for pressure loss, sidewall cracking, cuts, bulges, and uneven wear, even if the car is driven only occasionally. Low-use collector vehicles can age tires by time and storage conditions as much as by mileage, so visual inspection matters just as much as tread depth.

Storage conditions have a direct effect on long-term tire health. Keeping the car away from prolonged sunlight, moisture, heat, and ozone-producing equipment helps preserve the rubber, and moving the vehicle periodically can reduce flat-spotting from long stationary periods. Before any longer outing, check inflation again and make sure the spare, if carried, is roadworthy too.