1951 Opel Olympia Tires

The 1951 Opel Olympia uses two recognized tire sizes: 560-15 in a bias-ply construction and 155R15 in a radial construction. Both sizes are tied to a 15-inch rim diameter, so the fitment decision centers more on tire type and intended use than on changing wheel diameter.

That means the next step is deciding whether the car should keep a more traditional bias-ply presentation or move to a radial layout. A buyer should confirm the actual wheel width on the car, especially if the Olympia has had wheel changes over the years, and then compare the available sidewall and series choices within the selected size.

The tire options associated with the 1951 Opel Olympia use a 15-inch rim diameter. That applies to both the 560-15 bias-ply fitment and the 155R15 radial fitment, so the wheel diameter remains consistent even though the tire construction and sizing format differ.

Rim diameter alone is not the whole fitment story, though. Before choosing between the two sizes, it helps to verify the wheel's actual width as well as its condition, especially on an older restored car. That matters more when considering radial tires, since rim-width compatibility can be narrower or broader depending on the specific product selected.

The 1951 Opel Olympia Base is associated with the same two fitment choices used on this page: 560-15 bias-ply and 155R15 radial. In practical terms, the Base model does not introduce a separate wheel diameter or an extra tire size that changes the basic selection process.

The real decision for a Base-model owner is which direction better suits the car's purpose. A restoration-oriented Olympia may lean toward the 560-15 bias-ply for a more traditional look, while a driver-focused car may be evaluated around 155R15 radial options. Either way, the installed wheels and available clearance should be checked before making the final choice.

On the 1951 Opel Olympia, 560-15 is the bias-ply tire size. It uses a vintage numeric sizing format, and it represents the traditional construction path for this car, with available products in blackwall, narrow whitewall, and wide whitewall sidewall treatments.

That matters because a bias-ply tire affects both appearance and the overall character of the car differently than a radial. Buyers considering 560-15 should look closely at sidewall style, tire series, and wheel-width compatibility, especially if the Olympia is being restored for a period-style presentation rather than simply fitted for general driving.

Two radial-equivalent sizes are available for 560-15 on a 1951 Opel Olympia. The first is 155R15, which is the 80-series metric radial equivalent. The second is 560R15, a bias-look radial equivalent that keeps a more vintage-style sizing appearance while changing to radial construction.

These are useful alternatives, but they should be evaluated rather than assumed. A recommended rim-width range of 4 to 5 inches applies to the radial equivalents, so wheel width is an important checkpoint. It also helps to compare the actual wheel setup, tire clearance, and the intended use of the car before moving away from the original bias-ply format.

That depends on what matters most for the car. The 560-15 bias-ply route suits owners who want a more traditional look and a vintage-style tire presentation, while the 155R15 radial route gives the Olympia a classic narrow radial fitment on the same 15-inch rim diameter.

The best choice is usually guided by the car's purpose rather than a blanket rule. A show-focused or restoration-oriented Olympia may favor bias-ply construction and its period-style sidewalls, while a car driven more regularly may be evaluated around radial options. Wheel width, clearance, suspension condition, and the tire's visual effect on the car should all be reviewed before deciding.

Start with the basic direction of the car. A 560-15 bias-ply tire gives the 1951 Opel Olympia a more traditional vintage presentation, while a 155R15 radial follows a classic Euro-style radial format on the same 15-inch rim diameter. Construction choice is the first and most important filter.

After that, compare details that affect fitment and presentation, including rim-width compatibility, sidewall style, tire series, and any stated load figures. It also helps to think about how the car will actually be used. A lightly driven restoration and a regularly road-driven Olympia can justify different tire priorities even when both remain within the correct fitment family.

Sidewall style depends on which size and construction you choose. In 560-15 bias-ply, the 1951 Opel Olympia has blackwall, narrow whitewall, and wide whitewall options. In 155R15 radial, the available products are blackwall tires, giving a more understated and European-style presentation.

That makes sidewall choice a major part of the car's finished look. Whitewalls can shift the Olympia toward a more formal restoration-oriented appearance, while blackwalls keep things simpler and more restrained. Before deciding on style alone, it still makes sense to confirm the tire's construction, wheel compatibility, and how the finished look matches the rest of the car's trim and stance.

The 1951 Opel Olympia has tire options from Firestone, Michelin, Avon, Vredestein, US Royal, Coker Classic, and Pro-Trac. Those brands cover both primary fitment directions, with radial choices centered around 155R15 and bias-ply choices centered around 560-15.

Brand is only one part of the decision, so it helps to compare the broader product character at the same time. Some tires differ mainly by construction and sidewall treatment, while others differ by series focus and rim-width specification. Narrowing the choice first by size and intended appearance usually makes the brand comparison more useful and less overwhelming.

For a period-style 1951 Opel Olympia, the 560-15 bias-ply fitment is the natural starting point. It uses the traditional numeric sizing format and offers the kind of narrow vintage profile that many restoration-minded owners want, with blackwall, narrow whitewall, and wide whitewall versions available.

The final choice depends on how strictly the car is being restored and what visual presentation suits it best. If exact historical accuracy matters, period photos, marque references, and other vehicle-specific documentation are worth consulting before settling on a sidewall treatment. For many owners, the most practical goal is a tire that looks appropriately vintage without overstating originality.

Tire construction changes more than ride feel on a restored 1951 Opel Olympia; it changes the car's visual stance and overall character. A 560-15 bias-ply tire preserves a distinctly traditional look, while a 155R15 radial gives the car a later-style radial presentation even though both fit a 15-inch wheel.

That visual difference becomes more noticeable on a small postwar European sedan, where tire shape and sidewall style are easy to see. Whitewall bias-ply tires can create a stronger restoration-oriented impression, while blackwall radials tend to look cleaner and more understated. Matching the tire construction to the car's trim, wheel finish, and intended era of presentation usually brings the best result.

Yes, modifications can affect tire fitment on a 1951 Opel Olympia even when the tire size itself is appropriate. Aftermarket wheels, changes in wheel width, altered suspension height, brake conversions, or body work can all influence how a 560-15 or 155R15 tire sits within the fender and steering range.

That is why an older car should be checked as it exists today, not just as it may have left the factory decades ago. Measuring wheel diameter and width, looking at inner and outer clearance, and checking steering travel can prevent surprises. Those steps matter even more when changing construction type or moving from bias-ply to a radial alternative.

Before driving a 1951 Opel Olympia on new tires, inspect the wheels for damage, confirm the correct rim diameter and width, and make sure the tires are seated and inflated properly. It is also wise to look over the steering and suspension for looseness, since worn components can affect how an older car responds even with fresh tires installed.

A short, careful road test is usually the best next step. Listen for rubbing, watch for pull or vibration, and recheck pressure after the first miles. On a collector car that has been stored, it also helps to inspect brake condition, wheel fasteners, and any signs of fluid leaks so the Olympia is road-ready as a complete system, not just at the tire level.

Collector-car tires on a 1951 Opel Olympia should be maintained with regular pressure checks, visual inspections, and sensible storage habits. Whether the car wears 560-15 bias-ply tires or 155R15 radials, low annual mileage does not prevent aging, so sidewall cracking, flat-spotting, cuts, bulges, and slow air loss all deserve attention.

Storage conditions matter almost as much as road use. Keeping the Olympia away from prolonged sunlight, excess heat, moisture, and ozone sources can help preserve tire condition over time. Periodic inspections are important even when the car is not driven often, and any sign of unusual wear should prompt a closer look at alignment, suspension condition, and wheel setup.