The 1953 Mercedes-Benz 170 sits in the postwar transition period when Mercedes-Benz sedans still carried strong prewar engineering influence but were evolving toward more modern touring comfort. For collectors, these cars reward careful attention to details that shape both appearance and road manners. Tire fitment on the 1953 Mercedes-Benz 170 is not one-size-fits-all, with 550-16 bias-ply fitment on several sub-models and 640-15 bias-ply or 175R15 radial fitment on certain 170 S variants. That opens the door to traditional blackwall and whitewall bias-ply choices, along with radial-equivalent considerations on the 15-inch setup. The right selection starts with the exact sub-model and wheel diameter already on the car.
Which Tire Size Is Right for The 1953 Mercedes-Benz 170
The 1953 Mercedes-Benz 170 uses three primary tire sizes, and the correct one depends on the specific sub-model and whether the car is on a 16-inch or 15-inch wheel. Several versions use 550-16 bias-ply tires, while certain 170 S models use either 640-15 bias-ply or 175R15 radial tires. The first step is confirming the exact sub-model and wheel diameter before comparing brands, sidewall styles, or radial alternatives.
Fit(s): D, Da & Db, DS, S & D, S & V, and V, Va & Vb
Construction: Bias Ply|Rim: 16 in
550-16 is a vintage numeric bias-ply size in which the 5.50 designation refers to the tire's nominal section width in inches and the 16 identifies the wheel diameter. On the 1953 Mercedes-Benz 170, this is a traditional bias-ply fitment used on several sub-models that retain the taller, narrower look associated with early postwar European sedans. Available choices include blackwall and wide whitewall styles from Excelsior, Avon, BFGoodrich, and Firestone across several classic bias-ply series. This size suits owners focused on period-style presentation and correct wheel-diameter matching on 16-inch setups.
175R15 is a Euro-metric radial size with a 175 millimeter nominal section width, radial construction, and a 15-inch rim diameter. On the 1953 Mercedes-Benz 170, it appears on certain 170 S variants and represents a more modern radial sizing convention than the numeric bias-ply sizes used elsewhere in the model range. Its main relevance is as a 15-inch radial fitment, so the decision centers on confirming that the car is one of the sub-models using this size and that the wheel setup matches. It is the size to evaluate when retaining a radial configuration matters more than a strictly bias-ply presentation.
640-15 is a vintage numeric bias-ply size, with the 6.40 designation indicating nominal section width and the 15 identifying the wheel diameter. For the 1953 Mercedes-Benz 170, this size applies to certain 170 S variants and gives those cars a 15-inch bias-ply fitment distinct from the 16-inch setup used on other versions. Product choices include blackwall, narrow whitewall, and wide whitewall styles from BFGoodrich, Firestone, Avon, and Excelsior in several classic bias-ply series. This is the size to consider when maintaining a traditional 15-inch bias-ply look while also comparing radial-equivalent options carefully.
Sub-model fitment matters on the 1953 Mercedes-Benz 170 because tire size is not consistent across the full range. Most covered versions use 550-16 bias-ply tires, while the 170 S family can be found with either 640-15 bias-ply or 175R15 radial fitment on 15-inch wheels.
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1953 Mercedes-Benz 170 D, Da & Db
The 1953 Mercedes-Benz 170 D, Da & Db uses a 550-16 bias-ply tire on a 16-inch wheel. Tire selection here is mainly about choosing the right period-style bias-ply presentation, brand, and sidewall treatment rather than sorting through multiple primary sizes.
The 1953 Mercedes-Benz 170 DS, S & D also uses the 550-16 bias-ply fitment. That keeps the focus on matching the correct 16-inch tire size first, then selecting between blackwall and whitewall styles that suit the car's intended appearance.
The 1953 Mercedes-Benz 170 S & Sb is the sub-model where fitment needs the closest attention, since both 175R15 radial and 640-15 bias-ply sizes are associated with it. Wheel diameter and the car's current setup should be confirmed before choosing between traditional bias-ply styling and a radial-based approach.
The 1953 Mercedes-Benz 170 S & V uses the 550-16 bias-ply size. For this version, the practical choice is usually among available bias-ply brands and sidewall styles while keeping the 16-inch wheel fitment in mind.
The 1953 Mercedes-Benz 170 V, Va & Vb uses 550-16 bias-ply tires. That makes tire selection relatively straightforward, with the main decision shifting to restoration-oriented appearance, brand preference, and confirming compatibility with the car's existing 16-inch wheels.
Bias-Ply to Radial Tire Conversion for the 1953 Mercedes-Benz 170
For the original 640-15 size, three radial-equivalent options are available. 175R15 is the 80-series metric radial equivalent, P175/75R15 is the P-metric 75-series radial equivalent, and P185/70R15 is the P-metric 70-series radial equivalent. These choices differ mainly by sizing convention and profile family rather than serving as automatic substitutes for one another. A recommended rim-width range of 5 to 6 inches applies to the equivalent-size comparison, and any conversion should still be checked against the car's wheel setup, overall dimensions, and clearance.
Modern Radial Equivalents
175R15
Equivalent 80-series Metric Radial (640-15)
P175/75R15
Equivalent P-metric 75-series Radial (640-15)
P185/70R15
Equivalent P-metric 70-series Radial (640-15)
Important Considerations When Replacing Bias Ply With Radial
Compare overall diameter and section width carefully to ensure proper fit.
Verify recommended rim range (5-6 in) and load needs match your vehicle specifications.
Check fender clearance, steering clearance, and stance before installation.
Consider suspension condition and intended road use when choosing equivalents.
Important Fitment Notes
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1953 Mercedes-Benz 170 Tires for Sale
Available tires for the 1953 Mercedes-Benz 170 span 550-16 and 640-15 bias-ply fitments from Excelsior, Avon, BFGoodrich, and Firestone. Depending on size, the choices include blackwall, narrow whitewall, and wide whitewall styling across several classic tire series.
These FAQs focus on the fitment questions that matter most for a 1953 Mercedes-Benz 170, including sub-model tire size differences, 15-inch versus 16-inch wheel fitment, bias-ply and radial choices, appearance decisions, and road-use checks on a collector car.
Tire Size & Fitment
What tire size fits a 1953 Mercedes-Benz 170?
The 1953 Mercedes-Benz 170 uses more than one tire size depending on the sub-model. The primary fitments are 550-16 bias-ply, 640-15 bias-ply, and 175R15 radial. Most of the covered 170 variants use 550-16, while certain 170 S models are associated with 15-inch fitments in either 640-15 bias-ply or 175R15 radial form.
The practical step is to confirm the exact sub-model and the wheel diameter currently on the car before choosing a tire. A 16-inch car and a 15-inch car are not making the same tire decision, and a 170 S setup should be checked especially carefully if the car has been restored, converted, or fitted with different wheels at some point in its life.
What size rim does a 1953 Mercedes-Benz 170 use?
The 1953 Mercedes-Benz 170 uses 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. That means wheel diameter is a key part of fitment on this model range, not just the tire size itself.
Checking the actual wheel on the car matters before ordering any replacement tire. A 550-16 bias-ply tire belongs on a 16-inch wheel, while the 15-inch bias-ply and radial choices belong on 15-inch wheels. On an older Mercedes-Benz, restored or replacement wheels can change what is currently installed, so measuring the wheel and confirming the present setup is always worthwhile.
Do all 1953 Mercedes-Benz 170 sub-models use the same tire size?
No, the 1953 Mercedes-Benz 170 sub-models do not all use the same tire size. The 170 D, Da & Db, 170 DS, S & D, 170 S & V, and 170 V, Va & Vb use 550-16 bias-ply tires. The 170 S & Sb is the exception, with 15-inch fitments associated with both 640-15 bias-ply and 175R15 radial tires.
That difference means the sub-model name should be treated as a fitment checkpoint, not just a trim label. The 170 S family deserves extra attention because it introduces both a different wheel diameter and a different construction path. Before selecting a tire, confirm the car's exact version and inspect the wheels already on the vehicle so the replacement matches the setup actually being used.
Bias-Ply & Radial Options
Is 640-15 a bias-ply or radial tire for the 1953 Mercedes-Benz 170?
640-15 is a bias-ply tire size on the 1953 Mercedes-Benz 170. It is used on certain 170 S variants with a 15-inch wheel and follows the vintage numeric bias-ply sizing system rather than a modern metric radial format. That makes it the traditional 15-inch fitment choice for owners who want to keep a period-style construction and appearance.
A buyer considering 640-15 should decide whether the goal is to stay with an original-style bias-ply presentation or to evaluate one of the available radial equivalents. Bias-ply and radial choices can change the overall feel and look of the car, so wheel width, current wheel diameter, and available clearance should all be checked before moving away from the existing setup.
What radial tire sizes are equivalent to 640-15?
Radial equivalents for 640-15 include 175R15 as an 80-series metric radial, P175/75R15 as a P-metric 75-series radial, and P185/70R15 as a P-metric 70-series radial. These are all 15-inch radial alternatives associated with the 640-15 size. A recommended rim-width range of 5 to 6 inches applies to the equivalent-size comparison.
Those equivalents give the owner several ways to approach a 15-inch radial conversion, but they should be treated as alternatives rather than automatic replacements. The wheel already on the car, the rim width, and the available fender and steering clearance still need to be confirmed. On a restored 170 S, that check becomes especially important if wheel or suspension changes have been made over time.
What should I check before converting my 1953 Mercedes-Benz 170 from bias-ply to radial tires?
Start by confirming that the car is one of the 15-inch 170 S variants associated with a radial option or with radial-equivalent sizing from 640-15. Then verify the actual wheel diameter and wheel width on the car, because a 16-inch 550-16 setup is a different fitment path than a 15-inch 640-15 or 175R15 setup. The available equivalent range for 640-15 references a 5 to 6 inch rim width.
The rest of the check is vehicle-specific: compare the new tire's dimensions with the current setup, inspect steering and fender clearance, and account for any suspension wear or aftermarket wheel changes. A radial conversion can be a sensible option, but it should be approached as a measured fitment decision rather than a simple same-size swap on every 1953 Mercedes-Benz 170.
Choosing the Right Tire
What should I consider when choosing a tire for a 1953 Mercedes-Benz 170?
The first consideration is the correct size and wheel diameter for the exact car. A 1953 Mercedes-Benz 170 may use 550-16 bias-ply, 640-15 bias-ply, or 175R15 radial, so the sub-model and current wheel setup should be confirmed before anything else. Once the fitment is established, construction type and intended use become the next decision points.
After that, compare the characteristics that matter to your goals, such as blackwall versus whitewall appearance, the available tire series, and wheel-width compatibility where it is stated. A restoration-oriented car may lean toward traditional bias-ply styling, while a road-driven 15-inch 170 S may prompt closer attention to radial alternatives. The right choice starts with fitment, then narrows by appearance and use.
What sidewall styles are available for 1953 Mercedes-Benz 170 tires?
Available sidewall styles for the 1953 Mercedes-Benz 170 include blackwall, wide whitewall, and narrow whitewall, depending on the tire size selected. The 550-16 fitment is offered in blackwall and wide whitewall forms, while the 640-15 fitment expands the appearance choices to include blackwall, narrow whitewall, and wide whitewall options. Those sidewall treatments can change the car's visual character considerably.
Choosing among them depends on how the car is being presented. A blackwall typically gives a restrained, utilitarian look, while whitewall treatments bring more visual emphasis to the wheel opening and can suit a more formal restoration style. Since appearance preferences often vary by market, body style, and restoration goal, sidewall choice should be guided by the look you want rather than by assumptions about one universal original treatment.
What brands offer tires for the 1953 Mercedes-Benz 170?
Tires for the 1953 Mercedes-Benz 170 are available from Excelsior, Avon, BFGoodrich, and Firestone in the applicable bias-ply sizes. Brand availability depends on the specific fitment, with 550-16 and 640-15 each offering a mix of classic bias-ply choices. Some brands also appear in distinct tire series, such as Firestone Classic Bias Ply, Silvertown Classic Bias Ply, Tourist Crossply, and Super Safety Crossply.
Brand should be considered alongside the size, construction, sidewall style, and wheel specifications that apply to the car. A useful comparison is not just who makes the tire, but how that tire is presented and whether it supports the look and use you have in mind. On an older Mercedes-Benz, appearance and fitment usually matter more than choosing a brand name in isolation.
Restoration & Appearance
Which tire should I choose for a period-style 1953 Mercedes-Benz 170?
A period-style 1953 Mercedes-Benz 170 usually starts with the primary tire size and construction that belong to the exact sub-model. That means 550-16 bias-ply for most covered versions, or 640-15 bias-ply for certain 170 S cars using 15-inch wheels. Staying with the proper primary bias-ply size preserves the traditional tall, narrow visual character that suits a postwar Mercedes-Benz sedan of this era.
After the size is settled, the appearance choice shifts to details such as blackwall or whitewall styling and the particular tire series available in that fitment. For buyers chasing exact historical authenticity, period photos, marque-club guidance, and restoration documentation are the right next references. Those sources can help narrow the final look without confusing a period-style replacement with a verified factory-delivery specification.
How does tire construction affect the appearance of a restored 1953 Mercedes-Benz 170?
Tire construction can change the visual impression of a restored 1953 Mercedes-Benz 170 even when the wheel diameter stays the same. A bias-ply tire preserves the traditional presentation associated with the car's original era, while a radial can give the car a more modern tire look depending on the size format and sidewall design. That difference is most relevant on 15-inch 170 S applications where both bias-ply and radial paths exist.
For a restoration-minded owner, the choice is usually between maintaining an earlier visual character and adopting a more modern road-use approach. Sidewall style also matters, since blackwall, narrow whitewall, and wide whitewall options can shift the car's look significantly. The most convincing result usually comes from treating size, construction, and sidewall treatment as one coordinated appearance decision rather than choosing each element separately.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1953 Mercedes-Benz 170?
Yes, modifications can affect tire fitment on a 1953 Mercedes-Benz 170. Wheel changes, altered rim width, suspension work, ride-height changes, or body repairs around the fenders can all influence how a replacement tire sits and clears. That matters even more on a model range that already uses both 15-inch and 16-inch wheel fitments, because the wrong starting assumption can lead to the wrong tire being selected.
A car that has been restored over many decades may no longer match its original wheel setup exactly. Measuring the wheel diameter and width already on the car is a smart first step, followed by checking steering lock, fender clearance, and overall space around the tire. Those basic checks help prevent problems whether the car stays with bias-ply construction or moves toward a radial alternative.
What should I inspect before driving a 1953 Mercedes-Benz 170 on new tires?
Before driving a 1953 Mercedes-Benz 170 on new tires, inspect the wheels for the correct diameter and general condition, and make sure the tires are seated and inflated properly for the application being used. Then look for adequate clearance at the fenders, suspension, and steering components through the full range of motion. On an older collector car, it is also wise to check for worn suspension parts that can affect tire behavior.
A short local drive is the best way to confirm that the setup behaves as expected before longer road use. Pay attention to any rubbing, pulling, vibration, or unusual steering response, and recheck the tire pressure after the initial run. Since many 1953 Mercedes-Benz 170s are driven infrequently, a fresh installation should be treated as a full system check rather than just a tire swap.
How should tires on a collector 1953 Mercedes-Benz 170 be maintained?
Tires on a collector 1953 Mercedes-Benz 170 should be inspected regularly even if the car sees limited mileage. Look for cracking, cuts, bulges, uneven wear, and slow air loss, and keep the tire pressure consistent for the setup being used. Older cars that spend long periods parked can age tires through time and storage conditions long before the tread appears worn out.
Good storage habits help preserve both bias-ply and radial tires. Keep the car away from prolonged sunlight, excessive heat, moisture, and ozone sources, and move or drive it occasionally to avoid one position carrying the full load for too long. Before any longer outing, give each tire and wheel a fresh visual inspection so age-related issues are caught before they become road-use problems.