1961 Riley One Point Five Tires

A 1961 Riley One Point Five uses two primary tire sizes: 560-14 in bias-ply construction and 155R14 in radial construction. Both sizes are built for 14-inch wheels, so the main fitment question is not wheel diameter alone, but which construction and wheel-width range match the car.

That means the next step is to confirm the actual wheels on the car before choosing a tire. The 560-14 bias-ply options are tied to a narrower rim-width range than the 155R14 radial choices, so a car with changed wheels may suit one size better than the other.

The 1961 Riley One Point Five uses a 14-inch rim diameter with both of its primary tire sizes, 560-14 and 155R14. Even though the wheel diameter stays the same, the two tire constructions are not interchangeable without checking more than the rim diameter alone.

Rim width matters just as much as diameter when choosing between these tires. The available 560-14 bias-ply products are intended for narrower rims than the available 155R14 radial products, so measuring the wheel is a smart step before deciding on a period-style bias-ply or a radial alternative.

The 1961 Riley One Point Five Base is associated with both of the model’s primary tire sizes, 560-14 bias-ply and 155R14 radial. Rather than pointing to different trim-based fitment, that setup gives the Base model a choice between two construction types on the same 14-inch rim diameter.

For the owner, that makes the selection more about the car’s current wheels and the intended result than about sub-model differences. A restoration-oriented car may lean toward the 560-14 bias-ply look, while a driver-focused car may be evaluated around the 155R14 radial and its wider rim-width compatibility.

560-14 is a bias-ply tire size for the 1961 Riley One Point Five. In this application it represents the traditional numeric bias-ply fitment, and the available products in that size are BFGoodrich Silvertown Classic Bias Ply tires offered in blackwall, narrow whitewall, and wide whitewall versions.

That matters because bias-ply construction affects both appearance and wheel compatibility. The available 560-14 tires are built for a narrower rim-width range than the available 155R14 radial options, so anyone moving between constructions should confirm wheel width as carefully as overall visual style.

The 1961 Riley One Point Five can be equipped with either a 560-14 bias-ply tire or a 155R14 radial, both on 14-inch wheels. The right choice depends on what matters most for the car: a more traditional period-style presentation with the bias-ply size, or a radial construction option in 155R14.

Appearance is only part of the decision. The available radial and bias-ply products are intended for different rim-width ranges, so the actual wheels on the car need to be measured before changing construction. It also helps to consider whether the car is being restored for period look, regular road use, or a blend of both.

Before changing a 1961 Riley One Point Five from 560-14 bias-ply tires to 155R14 radials, confirm that the car still has 14-inch wheels and that the wheel width suits the radial tire’s specified range. The available 155R14 radials use a broader rim-width range than the available 560-14 bias-ply options.

It also helps to inspect clearance at the fenders and steering components, especially if the car has replacement wheels, suspension work, or body changes. A radial alternative can be considered for the Riley, but the tire should still be checked against the actual wheel, the vehicle’s stance, and its intended use.

Start with the two primary fitment paths for the 1961 Riley One Point Five: 560-14 bias-ply or 155R14 radial, both for 14-inch rims. From there, the main considerations are wheel width, intended appearance, tire construction, and whether the car is being set up for period-style presentation or broader road use.

Product details help narrow the choice further. The 560-14 bias-ply tires are offered with blackwall and whitewall treatments, while the 155R14 radial options are blackwall only. Brand, tire series, maximum load figures, and product weight can also be useful comparison points once the correct size and construction are confirmed.

Sidewall choices for the 1961 Riley One Point Five depend on which tire size and construction you choose. In 560-14 bias-ply, available styles include blackwall, narrow whitewall, and wide whitewall. In 155R14 radial, the available options are blackwall.

That difference makes sidewall style an important part of the selection process. A buyer looking for a more traditional or restoration-oriented appearance may naturally focus on the bias-ply offerings, while someone choosing the radial size will be comparing blackwall options by brand, series, and wheel compatibility rather than sidewall treatment.

Tire choices for the 1961 Riley One Point Five come from Michelin, Firestone, and BFGoodrich. Michelin and Firestone offer the 155R14 radial fitment, while BFGoodrich covers the 560-14 bias-ply size through the Silvertown Classic Bias Ply line.

Brand should be considered alongside size, construction, and presentation rather than by itself. The brand decision also ties directly to the type of tire being chosen, since the radial and bias-ply selections are split across different brands and series rather than overlapping in the same exact fitment.

For a period-style 1961 Riley One Point Five, the 560-14 bias-ply size is the natural starting point. Its numeric bias-ply format and available blackwall, narrow whitewall, and wide whitewall presentations make it the closer visual match for an owner focused on traditional stance and vintage character.

That does not automatically make one sidewall treatment historically exact for every car. When originality matters at a high level, the best approach is to compare the tire choice against marque references, older photos, or restoration records for the specific car, then confirm the wheel width suits the selected bias-ply tire.

Tire construction changes the visual character of a restored 1961 Riley One Point Five as much as it changes the driving setup. A 560-14 bias-ply gives the car a more traditional vintage presentation, while a 155R14 radial reads as a later-style radial fitment even though it still uses the same 14-inch rim diameter.

Sidewall treatment adds another layer to that decision. Whitewall options are available in the bias-ply size, while the radial choices are blackwall only, so the tire can noticeably influence how formal, sporting, or understated the finished car appears. Matching that look to the build’s intent usually leads to the best result.

Yes, modifications can affect tire fitment on a 1961 Riley One Point Five even when the car still uses a 14-inch wheel. Aftermarket wheels, changes in rim width, suspension work, ride-height changes, or body repairs can all influence whether a 560-14 bias-ply or 155R14 radial remains the better match.

That is especially important here because the available bias-ply and radial tires are intended for different rim-width ranges. A car that has been altered may still accept the original-style diameter, but it should be checked for wheel compatibility, steering clearance, and fender room before a new tire is selected.

Before driving a 1961 Riley One Point Five on new tires, inspect the wheels for correct diameter and width, check that the tires are seated properly, and verify pressure against the tire’s intended use. It is also wise to look over valve stems, lug hardware, and the visible condition of suspension and steering components.

A short test drive should be paired with another visual check afterward. Look for any signs of rubbing at full steering lock, unusual sidewall contact, or fresh marks inside the wheelhouse. On a low-use collector car, it also makes sense to monitor air retention and recheck the tires after the first few heat cycles.

Tires on a collector 1961 Riley One Point Five should be kept properly inflated, inspected regularly for cracking, bulges, cuts, and uneven wear, and protected from long periods of heat, direct sunlight, and ozone exposure. That applies whether the car is running 560-14 bias-ply tires or 155R14 radial tires.

Low annual mileage does not eliminate tire aging, so condition matters as much as tread depth on an older collector vehicle. It helps to move the car periodically, keep the tires clean and dry, and inspect them before each outing rather than assuming a garage-kept tire is automatically ready for road use.