1960 Fairthorpe Atomota Tires

The 1960 Fairthorpe Atomota uses two recognized 13-inch tire sizes: 520-13 in bias-ply construction and 145R13 in radial construction. Both sizes apply to the Atomota Base, so the fitment question is really about which construction style the car is set up to use rather than choosing between different trim-specific sizes.

A careful look at the car’s current wheels is the next step, especially if it has been changed over the years. Matching the tire size to the actual wheel width, overall vehicle setup, and intended use matters more here than simply picking one of the two numbers and assuming either construction belongs on every surviving example.

The 1960 Fairthorpe Atomota uses a 13-inch rim with both of its primary tire sizes. That applies to the 520-13 bias-ply fitment as well as the 145R13 radial fitment, so wheel diameter stays consistent even when the construction type changes.

Diameter is only part of the check, since rim width also affects whether a particular tire is appropriate. Before replacing tires, confirm that the car still has 13-inch wheels and inspect the wheel width, bead condition, and overall wheel integrity, especially on a lightly used collector car or one that may have seen older replacement wheels installed.

520-13 is a vintage numeric bias-ply tire size. The 5.20 refers to the nominal section width in inches, while 13 is the rim diameter in inches. On a 1960 Fairthorpe Atomota, that size represents the traditional bias-ply fitment and reflects the tire-sizing language commonly seen on small sports cars of the period.

Understanding that format helps when comparing it with radial alternatives such as 145R13 or the radial equivalents tied to 520-13. The size code alone does not settle interchangeability, so the wheel width, the car’s present ride height, and available clearance should still be verified before moving away from a bias-ply setup.

520-13 is a bias-ply tire size on the 1960 Fairthorpe Atomota. It uses the older numeric sizing system and represents the traditional construction format associated with this car’s vintage tire presentation on a 13-inch wheel.

That matters because a buyer deciding on 520-13 is also deciding to stay with bias-ply construction rather than moving to a radial-format alternative. The visual result, the way the car feels on the road, and wheel-width suitability can all change with a construction swap, so the decision should be made deliberately instead of treating the two formats as automatically interchangeable.

Radial equivalents for 520-13 include 155R13 as the 80-series metric radial option, P155/75R13 as the 75-series P-metric radial option, and P155/70R13 as the 70-series P-metric radial option. These are alternative radial formats associated with the original 520-13 bias-ply size.

The recommended rim-width range for those equivalents is 4 to 5 inches, which makes wheel measurement especially important before conversion. Even with the correct 13-inch diameter, the owner should still compare the actual wheel, suspension condition, and body clearance, since an equivalent size is a useful fitment path rather than an automatic one-size-fits-all replacement.

Start by confirming the actual wheel diameter and width on the car, then compare them with the radial size being considered. On a 1960 Fairthorpe Atomota, that usually means checking whether the wheel setup is appropriate for 145R13 or for a 520-13 radial equivalent such as 155R13, P155/75R13, or P155/70R13.

Clearance around the fenders, steering components, and suspension should also be inspected before making the change. A car that still carries original-style wheels, worn suspension parts, or older alignment settings may need more attention than a recently sorted driver, so it is wise to evaluate the full setup instead of focusing only on the tire code.

The main considerations are staying with the correct 13-inch bias-ply format, selecting a sidewall style that suits the car’s presentation, and checking the wheel width used by the specific tire. In 520-13, the available choices include blackwall, narrow whitewall, and wide whitewall options from Firestone and Premium Sport.

Series differences also matter because Firestone Classic Bias Ply and Premium Sport Lowrider products create different visual impressions even within the same size. A restoration-minded owner may favor a more traditional look, while another owner may simply want the proper size with a preferred sidewall treatment, so the tire should match both the wheel and the intended character of the car.

The available sidewall styles for 1960 Fairthorpe Atomota tires include blackwall, narrow whitewall, and wide whitewall, depending on the tire size and series selected. Blackwall appears in both 145R13 radial and 520-13 bias-ply options, while whitewall treatments are available in 520-13 bias-ply form.

That gives the buyer a meaningful appearance decision without changing the car’s basic 13-inch wheel diameter. A blackwall generally keeps the presentation restrained and sporting, while narrow or wide whitewalls create a stronger period-style visual statement, so sidewall choice should be considered alongside construction type rather than as a purely cosmetic detail.

Michelin, Firestone, and Premium Sport all offer applicable tire choices for the 1960 Fairthorpe Atomota. Michelin and Firestone appear in the 145R13 radial category, while Firestone and Premium Sport supply 520-13 bias-ply options with different sidewall treatments and series character.

Brand choice should be weighed together with construction, sidewall style, and rim-width suitability rather than treated as the only decision. A buyer comparing these options is really sorting through two separate paths: radial-format 145R13 tires in blackwall form, or bias-ply 520-13 tires with a broader range of traditional visual treatments.

For a period-style 1960 Fairthorpe Atomota, 520-13 is the natural starting point because it is the bias-ply size associated with the car’s traditional small-sports-car tire format. That keeps the sizing language and construction closer to what enthusiasts usually expect to see on an early-1960s British specialty car.

Within that size, the appearance can still vary quite a bit depending on whether the goal is blackwall, narrow whitewall, or wide whitewall presentation. If exact restoration authenticity is important, the tire decision should be compared with marque references, period photography, and vehicle-specific history rather than assuming any modern reproduction sidewall treatment is automatically correct.

Tire construction changes more than the way the car drives; it also changes the visual language of the restoration. On a 1960 Fairthorpe Atomota, 520-13 bias-ply tires preserve a more traditional period presentation, while 145R13 radials introduce a later-looking radial format even though the car remains on a 13-inch wheel.

That distinction becomes noticeable on a lightweight British sports car where the tire makes up a large part of the car’s stance. Owners aiming for a vintage visual impression often begin with the bias-ply route, while owners prioritizing radial construction usually accept some change in appearance as part of making the car more road-oriented.

Yes, modifications can affect tire fitment on a 1960 Fairthorpe Atomota even when the tire size itself is recognized for the car. Aftermarket wheels, altered wheel width, suspension changes, or body adjustments can all change how a 520-13 or 145R13 tire sits within the fender opening and how it clears steering and suspension parts.

A car that has been lowered, widened, or updated over the years should be measured carefully before a new set is chosen. That is especially important with a narrow, lightweight specialty car where small changes in wheel setup can have a noticeable effect on clearance, stance, and the practicality of using either bias-ply or radial construction.

Inspect the wheels, valve stems, and lug hardware first, then confirm that the tires are mounted in the correct size and construction for the car’s setup. A 1960 Fairthorpe Atomota should also be checked for obvious interference at full steering lock, along with any signs of rubbing near the fenders or suspension once the car is back on the ground.

Roadworthiness depends on more than tread, so it also makes sense to look at alignment condition, steering play, brake behavior, and tire pressure before heading out. On a seldom-driven collector car, those checks are especially worthwhile because wheel, suspension, and chassis issues often reveal themselves only after fresh tires are installed.

Collector-car tires should be maintained with regular pressure checks, visual inspections, and clean storage conditions. On a 1960 Fairthorpe Atomota, both 520-13 bias-ply and 145R13 radial tires deserve routine checks for cracking, bulges, cuts, uneven wear, and gradual air loss, especially if the car spends long periods parked between drives.

Storage habits matter because heat, sunlight, moisture, and ozone exposure can age low-mileage tires even when tread still looks usable. It also helps to move the car periodically and inspect the contact patch area, since lightly used specialty vehicles can develop age-related tire concerns before the owner notices any obvious change in appearance.