1965 Triumph Spitfire Tires

The 1965 Triumph Spitfire is associated with two primary tire sizes: 560-13 in bias-ply construction and 155R13 in radial construction. Both sizes use a 13-inch rim, so the choice is less about wheel diameter and more about which construction and sizing system suits the car you have in front of you.

That matters because a Spitfire kept in period-style trim may stay with 560-13, while a car already running radial-compatible wheels may use 155R13. Before selecting a tire, confirm the wheel width, inspect the current tire and wheel combination, and make sure the car has enough clearance for the size and construction you plan to run.

The tire fitments associated with the 1965 Triumph Spitfire use a 13-inch rim diameter. That applies to both the 560-13 bias-ply size and the 155R13 radial size, so the wheel diameter remains the same even though the sizing format and construction can differ.

Rim diameter is only part of the fitment picture on a small sports car like the Spitfire. Wheel width still needs to match the tire being considered, especially when moving between bias-ply and radial choices. Checking the actual wheel on the car is worthwhile if it has been restored, modified, or fitted with replacement wheels over the years.

The 1965 Triumph Spitfire Base is associated with both of the tire sizes used on this page: 560-13 in bias-ply form and 155R13 in radial form. That means sub-model identification is simple here, because the Base does not introduce a different wheel diameter or a separate tire size family.

The practical question becomes which setup your specific car is built around today. A Spitfire still wearing narrow vintage wheels may be better aligned with the bias-ply fitment, while a car equipped for radial use may point toward 155R13. Looking at the current wheels and tire construction will usually clarify which direction makes sense.

For the 1965 Triumph Spitfire, 560-13 is a bias-ply tire size. It uses the older numeric bias-ply sizing system, where the first number reflects nominal section width and the final number indicates the 13-inch rim diameter. In this application, 560-13 represents the traditional construction choice rather than a radial format.

That distinction matters because changing from 560-13 bias-ply to a radial alternative is more than a simple label change. Wheel width, tire profile, and overall presentation can all shift when construction changes. Owners keeping a restoration-oriented look often start with the bias-ply size, while owners considering more modern radial sizing should inspect the wheel and clearance setup first.

Radial equivalents for 560-13 include 155R13 as an 80-series metric radial, P155/75R13 as a 75-series P-metric radial, and P155/70R13 as a 70-series P-metric radial. These are three distinct ways to move from the original bias-ply size into radial construction while staying within the equivalent-size range tied to the 1965 Triumph Spitfire.

Each equivalent uses a different sizing convention, so they should be treated as alternatives to compare rather than automatic replacements. A recommended rim-width range of 4 to 5 inches is part of the equivalency picture for 560-13, and the car should also be checked for wheel compatibility, steering clearance, and overall fit before making the switch.

A 1965 Triumph Spitfire can be equipped with either a 560-13 bias-ply tire or a 155R13 radial, so the right choice depends on what you want from the car. Bias-ply keeps the vintage construction style in place, while radial fitment follows a more modern tire design within the same 13-inch wheel diameter.

Owners focused on a period-style look often lean toward the bias-ply option, especially when the wheels and overall restoration follow an earlier presentation. A radial may make more sense on a car already set up around radial-compatible wheels. Before changing construction, verify wheel width, inspect suspension and steering clearance, and compare the overall setup rather than choosing by size code alone.

Start with the correct size and construction for the way your 1965 Triumph Spitfire is set up now. The decision is between 560-13 bias-ply and 155R13 radial, both on 13-inch rims, so wheel width and intended use become just as important as the size itself when narrowing the options.

After that, compare details that change the character of the tire choice, including brand, tire series, sidewall treatment, and the wheel-width range tied to each product. A restoration-oriented car may call for a classic bias-ply presentation, while a driver built around radial fitment may point toward Michelin or Dunlop radial choices in the 155R13 range.

Sidewall style depends on which tire size and construction you choose for the 1965 Triumph Spitfire. The available 155R13 radial options are blackwall tires, while the 560-13 bias-ply options include narrow whitewall and wide whitewall styles. That creates a clear visual difference between the radial and bias-ply offerings on this application.

The best sidewall choice comes down to the appearance you want the car to present. Blackwall radials suit a restrained sporting look, while whitewall bias-ply tires create a more decorative vintage presentation. Sidewall style should still come after the fitment basics, so confirm the correct size, wheel width, and construction before choosing by appearance alone.

Tires for the 1965 Triumph Spitfire are available from Michelin, Dunlop, BFGoodrich, and Firestone. Michelin and Dunlop cover the 155R13 radial fitment, while BFGoodrich and Firestone cover the 560-13 bias-ply fitment. That brand split also reflects the broader choice between radial and bias-ply construction on this car.

Brand should be considered alongside the tire series, sidewall style, and wheel-width requirements of the specific tire being evaluated. A Michelin XAS-FF or Dunlop SP Sport Aquajet gives a very different starting point from a BFGoodrich or Firestone classic bias-ply. The smartest comparison is within the correct size and construction for your actual wheel setup.

For a period-style 1965 Triumph Spitfire, the 560-13 bias-ply tire is the natural starting point because it preserves the vintage sizing format and traditional construction associated with the era. Available examples include classic bias-ply offerings from BFGoodrich and Firestone, giving the car a more historically familiar visual character than a modern radial format.

The final choice still depends on how strictly the car is being restored and what wheel setup it currently uses. A period-style presentation may point toward bias-ply construction, but exact originality can depend on details beyond size alone. Owners pursuing a highly exact restoration should compare tire appearance against marque references, photographs, and vehicle-specific historical guidance.

A period-style 1965 Triumph Spitfire can be presented with blackwall, narrow whitewall, or wide whitewall tires depending on the direction of the car and the tire size chosen. Blackwall appears on the 155R13 radial options, while narrow whitewall and wide whitewall choices are available in the 560-13 bias-ply size.

The most suitable sidewall is usually the one that matches the visual goal of the restoration rather than the one that simply stands out most. Whitewalls create a more decorative vintage look, while blackwall keeps the presentation more understated and sporting. Sidewall style should complement the wheel and construction choice instead of overriding basic fitment requirements.

Yes, modifications can affect tire fitment on a 1965 Triumph Spitfire even when the tire size itself appears correct. Changes such as aftermarket wheels, altered wheel width, suspension work, ride-height changes, or body adjustments can influence how a 560-13 or 155R13 tire sits in the wheel opening and steers at full lock.

A Spitfire’s compact size makes those details worth checking carefully. Cars that have been updated over the years may no longer match the wheel setup implied by a stock-style fitment. Measuring the actual wheel, checking inner and outer clearance, and inspecting for rubbing marks around the suspension and fenders can prevent surprises after the tires are mounted.

Before driving a 1965 Triumph Spitfire on new tires, inspect the wheels, lug hardware, valve stems, and overall clearance around the fenders and suspension. It is also wise to confirm that all four tires are the intended size and construction, and that inflation is set appropriately for the tires being installed.

A short shakedown drive should be followed by another look at clearance and tire seating, especially on a car that has not been used regularly. Collector vehicles can hide worn steering or suspension parts that become more noticeable once fresh tires are fitted. Watching for vibration, pull, air loss, or rubbing early helps catch problems before a longer trip.

Collector-car tires on a 1965 Triumph Spitfire should be checked regularly for pressure, visible cracking, bulges, cuts, uneven wear, and signs of air loss. That applies whether the car is running 560-13 bias-ply tires or 155R13 radials, since long storage and infrequent use can age tires even when tread wear looks minimal.

Storage conditions matter almost as much as mileage on a lightly used sports car. Keeping the Spitfire away from prolonged sunlight, excess heat, moisture, and ozone sources can help preserve tire condition. It also helps to inspect the tires before each drive and after longer storage periods so age-related issues are caught before the car returns to the road.