The 1968 Mercedes-Benz 280 sits in a period when Mercedes-Benz balanced formal sedan luxury with refined grand touring and sports-car engineering. Whether the car is a 280 S, 280 SE, 280 SE Coupe & Convertible, or 280 SL/8, tire choice plays a major role in preserving the way the car looks and feels on the road. Fitment spans 14-inch radial and bias-ply options, with 185R14, 195R14, and 735-14 all appearing across the range. That opens the door to blackwall and narrow whitewall presentations, traditional bias-ply selection, and radial alternatives in period-friendly sizing. The right choice depends on the exact sub-model, wheel setup, and whether originality of appearance or road-driving character matters more.
Which Tire Size Is Right for The 1968 Mercedes-Benz 280
Three primary tire sizes appear on the 1968 Mercedes-Benz 280, and the correct one depends on the exact sub-model rather than rim diameter, since all use a 14-inch wheel. Some versions use a radial 185R14 or 195R14, while others also allow the 735-14 bias-ply size. The first step is confirming the specific 280 configuration so the tire choice stays aligned with the car's intended stance, appearance, and construction type.
185R14 is a Euro-metric radial size in which 185 represents nominal section width in millimeters, R identifies radial construction, and 14 is the wheel diameter in inches. On the 1968 Mercedes-Benz 280, this size suits sub-models that use a modern radial-format tire while keeping a classic 14-inch fitment. Available choices include Michelin, Phoenix, and Vredestein, with blackwall and narrow whitewall sidewall treatments. This size makes sense for owners who want a radial tire in the proper overall fitment family while still keeping the car visually in step with its period.
Fit(s): S 8 Cyl., SE 8 Cyl., and SE Coupe & Convertible
Construction: Bias Ply|Rim: 14 in
735-14 is a numeric bias-ply size, with the 7.35 designation referring to nominal section width and the 14 indicating wheel diameter. This format reflects the traditional sizing language used on many period cars and gives the 1968 Mercedes-Benz 280 a distinctly vintage tire presentation when that construction is desired. Available BFGoodrich options include blackwall and narrow whitewall versions in the Silvertown Classic Bias Ply series. This size is worth considering when maintaining a more traditional bias-ply look matters, especially on restoration-oriented cars that are being kept close to period style.
195R14 is also a Euro-metric radial, but with a slightly wider nominal section width than 185R14 while retaining the same 14-inch rim diameter. For the 1968 Mercedes-Benz 280, this size appears on the 280 SE Coupe & Convertible rather than across the full model range, so it should not be treated as a universal fitment. It represents a radial-format choice tied to that specific body configuration. This is the size to evaluate when matching the tire to a coupe or convertible wheel-and-body setup, especially before comparing appearance or construction preferences.
Sub-model fitment matters on the 1968 Mercedes-Benz 280 because not every version uses the same primary tire size. Some share 185R14 and 735-14 choices, the coupe and convertible use a different radial size, and the SL/8 stays with a single radial fitment.
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1968 Mercedes-Benz 280 S 8 Cyl.
The 1968 Mercedes-Benz 280 S 8 Cyl. uses either a 185R14 radial or a 735-14 bias-ply tire on a 14-inch rim. That gives the owner a clear construction choice between a radial-format road tire and a more traditional bias-ply presentation.
The 1968 Mercedes-Benz 280 SE 8 Cyl. shares the same basic tire situation as the 280 S, with 185R14 radial and 735-14 bias-ply fitments. Selection usually comes down to whether the car is being kept in a period-style visual direction or set up around radial construction.
The 1968 Mercedes-Benz 280 SE Coupe & Convertible uses 195R14 as its radial fitment, while 735-14 remains the bias-ply option. That makes wheel and body-style confirmation especially important before choosing between a wider radial-format tire and a traditional numeric bias-ply size.
The 1968 Mercedes-Benz 280 SL/8 uses 185R14 radial tires rather than sharing the broader bias-ply and radial mix seen elsewhere in the 280 range. Tire selection here is more straightforward, with the main decision centered on brand, sidewall treatment, and period-appropriate presentation.
Bias-Ply to Radial Tire Conversion for the 1968 Mercedes-Benz 280
For the 735-14 primary size, three radial-equivalent options are available. 185R14 is the 80-series metric radial equivalent, P195/75R14 is the P-metric 75-series radial alternative, and P205/70R14 is the P-metric 70-series radial alternative. These choices move from classic Euro-metric sizing to progressively more modern P-metric formats and profiles. A recommended rim-width range of 4 to 6 inches applies to this equivalent group, and final selection should still be checked against wheel width, vehicle dimensions, and clearance.
Modern Radial Equivalents
185R14
Equivalent 80-series Metric Radial (735-14)
P195/75R14
Equivalent P-metric 75-series Radial (735-14)
P205/70R14
Equivalent P-metric 70-series Radial (735-14)
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 280 Tires for Sale
Available tires for the 1968 Mercedes-Benz 280 span radial and bias-ply construction, with choices from Michelin, Phoenix, Vredestein, and BFGoodrich. Buyers can compare blackwall and narrow whitewall styles, classic radial series such as Michelin MXV and Sprint Classic, and the traditional Silvertown Classic Bias Ply line.
Common questions for the 1968 Mercedes-Benz 280 usually center on sub-model tire size, 14-inch rim fitment, bias-ply versus radial construction, equivalent radial sizing for 735-14, and how to balance period appearance with real-world road use.
Tire Size & Fitment
What tire size fits a 1968 Mercedes-Benz 280?
A 1968 Mercedes-Benz 280 can use 185R14, 735-14, or 195R14, depending on the exact sub-model. The 280 S and 280 SE use 185R14 radial or 735-14 bias-ply, the 280 SE Coupe & Convertible use 195R14 radial or 735-14 bias-ply, and the 280 SL/8 uses 185R14 radial.
That means the model name alone is not enough to choose a tire confidently. Before comparing brands or sidewall styles, confirm whether the car is an S, SE, SE Coupe & Convertible, or SL/8, then match the tire to that configuration and its 14-inch wheel setup.
What size rim does a 1968 Mercedes-Benz 280 use?
The tire fitments for the 1968 Mercedes-Benz 280 use a 14-inch rim diameter. That applies across the 185R14 radial, 735-14 bias-ply, and 195R14 radial sizes, so the wheel diameter stays consistent even when tire construction or sub-model fitment changes.
Rim diameter is only one part of the fitment picture, though. Wheel width still matters, especially when comparing bias-ply and radial options, so it is smart to confirm the actual wheel on the car before selecting a tire for restoration use or regular driving.
Do all 1968 Mercedes-Benz 280 sub-models use the same tire size?
No, not all 1968 Mercedes-Benz 280 sub-models use the same tire size. The 280 S and 280 SE share 185R14 radial and 735-14 bias-ply fitments, the 280 SE Coupe & Convertible use 195R14 radial and 735-14 bias-ply, and the 280 SL/8 uses 185R14 radial.
That variation is important because the correct radial size changes by sub-model even though the wheel diameter remains 14 inches. A coupe, convertible, sedan, or SL should be matched to its own configuration first, then the owner can sort out construction, sidewall style, and brand.
Bias-Ply & Radial Options
Is 735-14 a bias-ply or radial tire for the 1968 Mercedes-Benz 280?
735-14 is a bias-ply tire size on the 1968 Mercedes-Benz 280. It appears as the traditional numeric bias-ply fitment for the 280 S, 280 SE, and 280 SE Coupe & Convertible, while 185R14 or 195R14 cover the radial-format fitments used elsewhere in the range.
That distinction matters because a bias-ply tire changes both the look and the construction compared with a radial. Owners considering 735-14 usually do so for a period-style presentation, while anyone moving away from it should also confirm wheel width, clearance, and the intended driving character of the car.
What radial tire sizes are equivalent to 735-14?
Radial equivalents for 735-14 include 185R14 as the 80-series metric radial, P195/75R14 as the P-metric 75-series radial, and P205/70R14 as the P-metric 70-series radial. These are alternative radial sizing formats associated with the 735-14 bias-ply fitment rather than additional primary sizes for every sub-model.
Each option should be treated as a fitment comparison point, not as an automatic swap. The equivalent group carries a recommended rim-width range of 4 to 6 inches, and the final choice should be checked against the car's actual wheel width, body clearance, and overall setup.
What should I check before converting my 1968 Mercedes-Benz 280 from bias-ply to radial tires?
Start by confirming which sub-model is being fitted and whether the car currently uses the 735-14 bias-ply size. From there, compare the intended radial choice such as 185R14, P195/75R14, or P205/70R14 with the wheel's 14-inch diameter and appropriate width range before making the change.
Construction changes can affect the way the car sits and the space available around suspension and bodywork. It is also wise to inspect the wheels, alignment condition, and steering clearance so the radial alternative matches the vehicle's actual setup rather than just the nominal tire size.
Choosing the Right Tire
What should I consider when choosing a 1968 Mercedes-Benz 280 tire?
The main decision points are the exact sub-model, the correct tire size, and whether the car should stay with bias-ply construction or use a radial fitment. A 280 S, 280 SE, 280 SE Coupe & Convertible, and 280 SL/8 do not all share the same tire choices, even though they use 14-inch wheels.
After size and construction are settled, compare sidewall appearance, tire series, and wheel-width compatibility. A restoration-oriented sedan may lean toward a traditional numeric bias-ply look, while a road-driven SL/8 or sedan owner may focus more on the available radial choices in the correct format.
What sidewall styles are available for 1968 Mercedes-Benz 280 tires?
Tires for the 1968 Mercedes-Benz 280 are available in blackwall and narrow whitewall styles. The radial 185R14 offerings include both blackwall and narrow whitewall choices, while the 735-14 bias-ply selection is also available in blackwall and narrow whitewall form.
Sidewall style changes the visual tone of the car more than the fitment itself, so it is worth choosing with the vehicle's presentation in mind. A blackwall usually gives a cleaner understated look, while a narrow whitewall can better support a formal period-style appearance on a restoration-focused car.
What brands offer tires for the 1968 Mercedes-Benz 280?
Michelin, Phoenix, Vredestein, and BFGoodrich all offer tires for the 1968 Mercedes-Benz 280. Michelin, Phoenix, and Vredestein cover the 185R14 radial fitment, while BFGoodrich supplies the 735-14 bias-ply options in the Silvertown Classic Bias Ply series.
Brand choice should come after confirming the correct size and construction for the specific car. Once that is handled, it becomes easier to compare each brand by sidewall style, tire series, rim-width specification, and whether the goal is a traditional bias-ply look or a classic radial presentation.
Restoration & Appearance
Which tire should I choose for a period-style 1968 Mercedes-Benz 280?
A period-style 1968 Mercedes-Benz 280 often starts with the tire size and construction that match the specific sub-model's traditional fitment pattern. For cars that use 735-14, a numeric bias-ply tire delivers the most traditional presentation, while 185R14 or 195R14 radial choices keep the car within a classic European sizing theme.
The right answer depends on how strictly the car is being restored and how it will be used. Owners aiming for exact historical accuracy should compare their car with marque references and restoration documentation, while drivers focused on visual character can weigh bias-ply appearance against radial-format alternatives.
How does tire construction affect the appearance of a restored 1968 Mercedes-Benz 280?
Tire construction changes the visual impression of a restored 1968 Mercedes-Benz 280 because a 735-14 bias-ply presents the car in a more traditional vintage format, while 185R14 and 195R14 radials give it a more modernized period-European tire profile. Sidewall treatment further shapes that appearance.
A blackwall keeps the look restrained, while a narrow whitewall adds a more formal restoration-oriented accent. Construction choice should also be viewed alongside the car's body style and intended finish, since a sedan, coupe, convertible, or SL may call for a different visual balance even within the same model family.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1968 Mercedes-Benz 280?
Yes, modifications can affect tire fitment on a 1968 Mercedes-Benz 280 even when the nominal tire size is correct. Aftermarket wheels, altered wheel width, suspension changes, or body modifications can all change the amount of room available for a 185R14, 195R14, or 735-14 tire.
That is why it helps to inspect the actual wheel and vehicle setup instead of relying only on the original fitment pattern. Clearance at the fender edge, steering range, and suspension components should all be checked, especially if the car has been lowered, restored with non-stock parts, or converted between constructions.
What should I inspect before driving a 1968 Mercedes-Benz 280 on new tires?
Before driving a 1968 Mercedes-Benz 280 on new tires, inspect wheel condition, tire pressure, valve stems, and the visible space around the tire at full steering lock. It is also smart to check for rubbing risks, uneven suspension height, and whether the chosen tire matches the car's actual wheel diameter and width.
A collector car may have sound-looking wheels or suspension parts that still need attention after long storage. Road use is much more confidence-inspiring when the tires are paired with clean bead seats, properly functioning brakes and steering, and a quick recheck after the first few miles of driving.
How should tires on a collector 1968 Mercedes-Benz 280 be maintained?
Tires on a collector 1968 Mercedes-Benz 280 should be maintained with regular pressure checks, periodic visual inspection, and close attention to age-related deterioration. Look for sidewall cracking, bulges, cuts, uneven tread wear, and slow air loss, since low-use vintage cars can age tires out before they wear them out.
Storage conditions matter just as much as mileage on a classic Mercedes. Keeping the car away from prolonged sunlight, moisture, heat, and ozone sources helps preserve the tire, and occasional movement can reduce flat-spotting on vehicles that spend long periods parked between drives.
