1966 Fiat 1300 & 1500 Tires

The 1966 Fiat 1300 & 1500 uses two primary tire sizes: 155R13 in radial construction and 560-13 in bias-ply construction. Both are 13-inch fitments, but they represent different sizing systems and different tire presentations on the car.

Choosing between them starts with confirming how the car is set up now and what kind of result is desired. A 560-13 keeps the vintage numeric bias-ply format, while 155R13 follows a Euro-metric radial format. Wheel width, current wheel type, and any prior suspension or wheel changes should be checked before settling on one direction.

Both primary tire sizes associated with the 1966 Fiat 1300 & 1500 use a 13-inch rim diameter. That applies whether the car is using the 560-13 bias-ply size or the 155R13 radial size.

Rim diameter is only one part of the fitment picture, so it helps to confirm wheel width before choosing a tire. The available products show different rim-width ranges depending on size and tire model, which matters when comparing a narrow bias-ply wheel setup to a radial-compatible wheel arrangement on a restored or driver-quality car.

Yes. The 1966 Fiat 1300 & 1500 Wagon uses the same two tire sizes associated with this model range: 155R13 in radial construction and 560-13 in bias-ply construction. The Wagon follows the same 13-inch fitment pattern rather than requiring a separate diameter.

That means the decision is less about finding a unique Wagon-only size and more about choosing the right construction and appearance. Wagon owners should still verify the actual wheels on the car, especially if it has been modified over the years, and then decide whether a traditional bias-ply look or a radial setup better suits the vehicle.

560-13 is a bias-ply tire size on the 1966 Fiat 1300 & 1500. It uses the older numeric sizing format and is offered in classic bias-ply product lines with traditional whitewall treatments that suit a mid-1960s European car presentation.

That makes 560-13 the size to evaluate when maintaining a vintage construction and period-style appearance matters most. Before choosing it, confirm the wheel width on the car and compare it with the rim-width requirements of the available products, since bias-ply tires in this size are associated with narrower wheel ranges than the radial alternatives.

Radial equivalents for 560-13 include 155R13 as an 80-series metric radial, P155/75R13 as a P-metric 75-series radial, and P155/70R13 as a P-metric 70-series radial. These are equivalent-size alternatives for the original bias-ply format rather than additional primary bias-ply sizes.

Each option should be treated as a fitment path that needs verification on the actual car. The equivalent range is associated with a 4 to 5 inch recommended rim width, and the final check should include wheel compatibility, overall tire dimensions, and clearance at the fenders and steering components before making the switch.

That choice depends on the role of the car and the look you want to preserve. A 560-13 bias-ply keeps the vintage sizing format and supports a more traditional visual presentation, while 155R13 gives the car a radial fitment that stays within the same 13-inch wheel diameter.

Owners focused on restoration-oriented appearance often start with the bias-ply option, especially when whitewall style matters. Drivers leaning toward regular road use may prefer the radial route, but the car's actual wheels should be measured first so the chosen tire matches the wheel width and the car still has suitable clearance in service.

Start with the two correct size paths for the car: 560-13 in bias-ply construction or 155R13 in radial construction. From there, the most important factors are wheel diameter, wheel width, intended appearance, and whether the car is being kept closer to a vintage presentation or set up for regular road use.

Product differences also matter once the basic fitment direction is set. Some choices focus on blackwall radial styling, while others emphasize narrow or wide whitewall bias-ply looks. Comparing rim-width compatibility, tire series, and load figures where available helps narrow the field without turning the decision into a brand ranking exercise.

The available sidewall styles for this fitment include blackwall in the 155R13 radial size, plus narrow whitewall and wide whitewall in the 560-13 bias-ply size. Those visual differences can change the car's overall presentation just as much as the tire construction does.

Blackwall radials tend to suit owners who want a cleaner, more understated driver look, while whitewall bias-ply tires create a more traditional period-style appearance. The right choice depends on how the car is being finished and used, but the sidewall style still needs to be selected within the correct size and wheel-compatible product range.

Michelin and Dunlop offer radial choices in 155R13, while BFGoodrich and Firestone offer bias-ply choices in 560-13. That gives the 1966 Fiat 1300 & 1500 a useful spread of brands across both construction types rather than limiting the owner to a single style of replacement.

The practical way to use that brand variety is to compare what each option represents. Michelin and Dunlop center on blackwall radial presentation, while BFGoodrich and Firestone cover classic bias-ply whitewall looks. Once size and construction are settled, series details, rim-width range, and appearance become more useful comparison points than brand name alone.

For a period-style 1966 Fiat 1300 & 1500, the 560-13 bias-ply size is the natural starting point because it preserves the vintage numeric format and supports classic whitewall presentations. Available choices include both narrow whitewall and wide whitewall versions, which lets the appearance be tailored without leaving the traditional size family.

That does not automatically make one sidewall or brand exact for every car, so originality-minded restorations should still be checked against marque references or historical documentation. For many owners, though, staying with the correct bias-ply size and selecting a whitewall treatment that suits the car's era delivers the right visual character.

Tire construction changes the visual character of the car as much as the size code does. A 560-13 bias-ply gives the 1966 Fiat 1300 & 1500 a distinctly vintage presentation, especially in narrow or wide whitewall form, while a 155R13 radial blackwall reads as a more modernized road-going setup.

That makes construction an appearance decision as well as a fitment decision. Owners restoring for a traditional small-European-car look often stay with the bias-ply path, while those building a driver may prefer the radial route. Either way, the tire should still match the wheel dimensions and the finished stance of the actual vehicle.

Yes. Modifications can affect tire fitment on a 1966 Fiat 1300 & 1500 even when the tire size itself is correct. Aftermarket wheels, altered wheel width, suspension changes, ride-height adjustments, or bodywork variations can all change how a 13-inch tire clears the car in real use.

That is especially important when moving between the 560-13 bias-ply and 155R13 radial fitment paths, or when considering a radial equivalent for the bias-ply size. Checking wheel width, steering clearance, and space at the fender openings helps prevent choosing a tire that matches the code on paper but conflicts with the vehicle's current setup.

Before road use, inspect the wheels for damage or corrosion, verify that the rim diameter and width match the chosen tire, and confirm proper inflation. It also helps to look over suspension and steering components so the new tires are being installed on a sound chassis rather than masking worn hardware.

A short clearance check is wise once the tires are mounted. Turn the steering from lock to lock, look for rubbing at the inner wheelhouse and fender edge, and recheck the tires after the first miles for air loss or unusual contact marks. That routine is useful on any collector-era Fiat, especially one that has sat for long periods.

Collector-car tires should be inspected regularly for cracking, cuts, bulges, uneven wear, and slow air loss, even if the 1966 Fiat 1300 & 1500 is driven only occasionally. Low annual mileage does not stop tires from aging, so condition matters just as much as remaining tread depth.

Storage habits also play a big role in tire life. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires between drives, and maintaining proper inflation reduces flat-spotting and stress on the casing. Any sign of age-related deterioration deserves attention before returning the car to regular road use.