The 1968 Mercedes-Benz 190 sits in the era when Mercedes sedans were known for durable engineering, understated styling, and a road feel shaped as much by tire construction as by chassis design. For owners preserving that character, tire choice matters in both appearance and driving presentation. This model uses either a 700-13 bias-ply tire or a 185R13 radial, both on 13-inch rims. That opens a meaningful choice between a traditional wide whitewall bias-ply look and a metric radial format associated with later road manners. The right selection depends on whether the goal is restoration-oriented appearance, everyday touring confidence, or a careful balance of both.
Which Tire Size Is Right for The 1968 Mercedes-Benz 190
The 1968 Mercedes-Benz 190 uses two primary tire sizes, and the decision is tied mainly to construction rather than wheel diameter since both fit 13-inch rims. Choosing the right tire starts with confirming whether the car is staying with its traditional 700-13 bias-ply setup or using the 185R13 radial size, then matching that choice to the car's current wheels, appearance goals, and road use.
The 185R13 size uses a metric section width in millimeters, radial construction, and a 13-inch rim diameter, with the unstated profile commonly associated with an 80-series radial format. On a 1968 Mercedes-Benz 190, this size represents the radial path and gives the car a more modern sizing convention than the older numeric bias-ply format. Michelin offers this size in the XAS-FF series with a blackwall sidewall treatment. It is the size to evaluate when the car is already set up for radial use or when a radial-format tire is the intended direction.
The 700-13 size is a vintage numeric bias-ply designation in which the leading number refers to nominal section width, approximately 7.00 inches, paired with a 13-inch rim. On the 1968 Mercedes-Benz 190, this size preserves the traditional bias-ply construction and the visual character that many restoration-minded owners want. Firestone offers it in a Classic Bias Ply series with a wide whitewall sidewall style. It is the size to consider when period-style appearance matters most and the car retains wheels and fitment suited to the original-style construction.
Fitment is straightforward here because the covered 1968 Mercedes-Benz 190 sub-model uses the same two tire-size paths. Checking the exact sub-model still matters so the tire choice stays aligned with the car's current wheel setup and whether the goal is bias-ply originality in appearance or radial-format driving use.
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1968 Mercedes-Benz 190 Series
The 1968 Mercedes-Benz 190 Series uses either the 700-13 bias-ply size or the 185R13 radial size, both on 13-inch rims. That gives the owner a clear choice between a traditional period-style presentation and a radial-format alternative, with wheel width and overall vehicle setup worth checking before changing construction.
Bias-Ply to Radial Tire Conversion for the 1968 Mercedes-Benz 190
For the original 700-13 size, three radial-equivalent options are available. 185R13 is the 80-series metric radial equivalent, P185/75R13 is the P-metric 75-series radial equivalent, and P205/70R13 is the P-metric 70-series radial equivalent. These choices reflect different sizing conventions and profile families rather than one automatic substitute. A recommended rim-width range of 4 to 6 inches applies to these equivalents, so wheel width, overall dimensions, and vehicle clearance should all be checked before changing from the bias-ply size.
Modern Radial Equivalents
185R13
Equivalent 80-series Metric Radial (700-13)
P185/75R13
Equivalent P-metric 75-series Radial (700-13)
P205/70R13
Equivalent P-metric 70-series Radial (700-13)
Important Considerations When Replacing Bias Ply With Radial
Compare overall diameter and section width carefully to ensure proper fit.
Verify recommended rim range (4-6 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 1968 Mercedes-Benz 190 Tires for Sale
Available choices for the 1968 Mercedes-Benz 190 center on two very different tire directions: a Michelin XAS-FF blackwall radial in 185R13 and a Firestone Classic Bias Ply wide whitewall in 700-13. That makes construction, sidewall appearance, and rim-width compatibility the key comparisons in the product grid.
Owners of a 1968 Mercedes-Benz 190 usually want clarity on the two tire sizes, the 13-inch rim fitment, bias-ply versus radial selection, and what to inspect before putting a vintage Mercedes back on the road.
Tire Size & Fitment
What tire size fits a 1968 Mercedes-Benz 190?
The 1968 Mercedes-Benz 190 uses two primary tire sizes: 700-13 in bias-ply construction and 185R13 in radial construction. Both are 13-inch tire sizes, but they follow different sizing systems and represent different construction types, so the choice is not just about dimensions but also about how the car is equipped and how it is meant to be used.
That means the first step is deciding whether the car is staying with a traditional bias-ply setup or using a radial-format tire. A car with older replacement wheels, prior suspension work, or a long history of tire changes should have its actual wheel width and overall clearance checked before a new set is selected.
What size rim does a 1968 Mercedes-Benz 190 use?
The tire sizes used on a 1968 Mercedes-Benz 190 fit a 13-inch rim. Both the 700-13 bias-ply size and the 185R13 radial size share that same rim diameter, so rim diameter itself is consistent even though the tire constructions and sizing formats differ.
Rim diameter is only part of the fitment picture on a vintage Mercedes. Wheel width still matters, especially when moving between a bias-ply and a radial-size alternative, so it is smart to confirm the actual wheel dimensions on the car before assuming any 13-inch tire option is equally suitable.
Does the 1968 Mercedes-Benz 190 Series use the same tire size?
The 1968 Mercedes-Benz 190 Series follows the same basic fitment pattern, with 700-13 bias-ply and 185R13 radial sizes used on the covered sub-model. The key difference is not between sub-models here, but between the two construction paths and the sizing systems tied to them.
For an owner, that simplifies the search because the main decision becomes which construction best suits the car's current setup and intended use. A restoration-oriented car may stay with the bias-ply presentation, while a touring-oriented car may be evaluated around the radial size after wheel and clearance checks.
Bias-Ply & Radial Options
Is 700-13 a bias-ply or radial tire for the 1968 Mercedes-Benz 190?
On the 1968 Mercedes-Benz 190, 700-13 is a bias-ply tire size. It uses the older numeric sizing system and is associated with the traditional construction many owners choose when preserving a period-style look and feel on a vintage Mercedes sedan.
That matters because a bias-ply tire should not be viewed as the same choice as a metric radial just because both fit a 13-inch rim. Construction affects presentation and setup, so anyone moving away from 700-13 should confirm wheel width, overall tire dimensions, and available clearance before switching formats.
What radial tire sizes are equivalent to 700-13?
Radial equivalents for 700-13 include 185R13 as an 80-series metric radial, P185/75R13 as a P-metric 75-series radial, and P205/70R13 as a P-metric 70-series radial. These are recognized equivalent-size options for buyers comparing a traditional bias-ply fitment to more modern radial sizing formats.
Each equivalent represents a different sizing convention, so the decision is not simply about picking any radial with a 13-inch rim diameter. A recommended rim-width range of 4 to 6 inches is associated with these equivalents, and the car should also be checked for wheel compatibility and body or steering clearance.
What should I check before converting my 1968 Mercedes-Benz 190 from bias-ply to radial tires?
Start by confirming the car's actual wheel diameter and width, then compare the intended radial equivalent against the current setup. For a 700-13 bias-ply fitment, the radial options include 185R13, P185/75R13, and P205/70R13, with a recommended rim-width range of 4 to 6 inches attached to those equivalents.
The next step is checking practical fitment on the car itself. Steering clearance, fender clearance, suspension condition, and any past wheel or ride-height changes can influence the outcome, so a conversion should be treated as a measured fitment decision rather than an automatic size swap.
Choosing the Right Tire
What should I consider when choosing a 700-13 tire for a 1968 Mercedes-Benz 190?
Choosing a 700-13 tire for a 1968 Mercedes-Benz 190 starts with confirming that the car is staying with the bias-ply size rather than moving to a radial equivalent. In this size, the available option is a Firestone Classic Bias Ply with a wide whitewall, so the decision centers on maintaining a traditional construction and appearance.
Beyond size alone, check whether the car's wheels match the tire's rim-width requirements and whether the look suits the intended restoration style. A bias-ply tire is usually selected as much for visual character as for fitment, so it makes sense to match the tire choice to the car's overall presentation.
What sidewall styles are available for 1968 Mercedes-Benz 190 tires?
The available sidewall styles for the 1968 Mercedes-Benz 190 are blackwall and wide whitewall. The blackwall style appears on the 185R13 Michelin XAS-FF radial, while the wide whitewall style appears on the 700-13 Firestone Classic Bias Ply option.
That gives the car two very different visual directions. A blackwall radial usually suits a cleaner later-service look, while a wide whitewall bias-ply creates a more traditional presentation, so sidewall choice should be weighed alongside construction type rather than treated as a separate cosmetic decision.
What brands offer tires for the 1968 Mercedes-Benz 190?
Michelin and Firestone both offer tires for the 1968 Mercedes-Benz 190, but they serve different fitment paths. Michelin covers the radial side with the XAS-FF in 185R13, while Firestone covers the bias-ply side with a Classic Bias Ply 700-13 wide whitewall.
That means brand choice is closely tied to size format, construction, and appearance rather than name alone. It is more useful to decide whether the car should wear a radial blackwall or a bias-ply wide whitewall first, then compare the applicable tire's wheel compatibility and intended use.
Restoration & Appearance
Which tire should I choose for a period-style 1968 Mercedes-Benz 190?
For a period-style 1968 Mercedes-Benz 190, the 700-13 bias-ply tire is the natural starting point because it keeps the vintage numeric sizing format and traditional construction associated with the car's era. In the available selection, that route is represented by a Firestone Classic Bias Ply with a wide whitewall sidewall treatment.
That does not automatically make every period-style car a wide whitewall car, since restoration goals can vary by market, trim history, and owner preference. When exact originality matters, compare the tire choice against photos, marque references, and the car's own history before settling on the final presentation.
How does tire construction affect the appearance of a restored 1968 Mercedes-Benz 190?
Tire construction changes the visual character of a restored 1968 Mercedes-Benz 190 as much as the size designation does. A 700-13 bias-ply keeps the traditional vintage format and, in the available option, pairs it with a wide whitewall, while the 185R13 radial presents the car in a more modern metric blackwall style.
Those differences influence how the car sits visually and how authentic the overall presentation feels to the owner's restoration goal. Construction choice should be made early in the project so wheel selection, stance, and trim details all support the same finished appearance rather than working against each other.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1968 Mercedes-Benz 190?
Yes, modifications can affect tire fitment on a 1968 Mercedes-Benz 190 even when the tire size itself is correct. Aftermarket wheels, altered wheel width, suspension changes, ride-height adjustments, or body repairs around the fender openings can all influence how a 700-13 or 185R13 tire sits and clears the car.
That is especially important when changing from the bias-ply size to a radial equivalent or vice versa. A car that has been modified should be measured as it sits now, with attention to steering clearance and wheel dimensions, instead of relying only on the original fitment path.
What should I inspect before driving a 1968 Mercedes-Benz 190 on new tires?
Before driving a 1968 Mercedes-Benz 190 on new tires, inspect the wheels for correct diameter and condition, verify that the tires are seated properly, and check inflation pressure carefully. It is also wise to look over suspension and steering components so the new tires are not being asked to compensate for worn mechanical parts.
A short, cautious test drive is the best way to confirm that the car tracks properly and that there is no rubbing at full steering lock or over bumps. Vintage cars often spend long periods parked, so a full road-use check should include listening for vibration and rechecking air pressure after the initial drive.
How should tires on a collector 1968 Mercedes-Benz 190 be maintained?
Tires on a collector 1968 Mercedes-Benz 190 should be maintained with regular pressure checks, visual inspections, and careful storage habits. Even if tread wear is minimal, a low-use vintage car can still develop age-related issues such as sidewall cracking, flat spotting, bulges, or slow air loss over time.
Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires between drives. It also pays to inspect the tires before every outing, since collector cars often sit longer than daily drivers and may show condition changes before mileage ever becomes the issue.
