1960 Jaguar 2.4, 3.4, 3.8 & 3.8S Tires

The 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S uses two primary tire sizes: 185R15 in radial construction and 640-15 in bias-ply construction. Both are 15-inch fitments, so the size decision is tied more to construction and intended presentation than to a change in wheel diameter.

That means the next step is deciding how the car will be used and how original-looking you want it to appear. A radial 185R15 points toward a more modern tire format, while a 640-15 keeps the traditional numeric bias-ply sizing. Wheel width, tire clearance, and any prior wheel changes should still be confirmed before settling on either path.

Both primary tire sizes for the 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S are built around a 15-inch rim diameter. The radial 185R15 and the bias-ply 640-15 each use a 15-inch wheel, so there is no split here between different factory-style rim diameters.

Rim diameter is only one part of the fitment picture on a collector Jaguar. Before changing construction or moving to a radial equivalent, check the actual wheel width on the car as well as clearance at full steering lock and through suspension travel. Cars that have been restored or modified may no longer be wearing their original wheel setup.

640-15 is a vintage numeric bias-ply size. The 6.40 portion refers to the tire's nominal section width in inches, and the 15 identifies the wheel diameter. On this 1960 Jaguar, 640-15 represents the traditional bias-ply fitment rather than a modern metric radial format.

Understanding that format helps when comparing old-style and newer-style tire sizing. A buyer looking at 640-15 should expect a vintage construction choice with period-style sidewall options, while a buyer considering a radial should look at 185R15 or the specific radial equivalents attached to 640-15. Matching the tire to the wheel and intended use is more important than comparing size codes by appearance alone.

640-15 is a bias-ply tire size for the 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S. It is the vintage numeric fitment path on this car, while 185R15 is the radial fitment path, so the two primary sizes also represent two distinct construction types.

That distinction matters because it affects both appearance and setup decisions. A 640-15 bias-ply keeps the traditional tire profile and sidewall presentation many restorations call for, while a radial choice moves the car into a different sizing convention. Anyone switching between the two should confirm wheel width and check clearance instead of assuming that every 15-inch tire behaves the same on the car.

Radial equivalents for 640-15 include 175R15 as the 80-series metric radial option, P175/75R15 as the 75-series P-metric option, and P185/70R15 as the 70-series P-metric option. No bias-look radial equivalent is attached to 640-15 here, so the available alternatives stay within conventional radial sizing formats.

Those choices give the buyer several ways to move from a numeric bias-ply size into radial construction, but they still need to be evaluated on the actual car. A recommended rim-width range of 5 to 6 inches applies to the equivalent path, and overall dimensions, wheel width, steering clearance, and suspension condition should all be checked before making the change.

Start by confirming which bias-ply size is on the car now and which radial size is being considered in its place. For a 640-15 conversion, the available radial-equivalent sizes are 175R15, P175/75R15, and P185/70R15, and the equivalent path calls for a 5 to 6 inch rim-width range.

The practical checks are wheel width, actual wheel condition, suspension wear, steering clearance, and fender clearance under load. A car that has sat for long periods or has older steering and suspension components may respond differently once construction changes. The safest approach is to treat radial sizing as an alternative fitment to verify carefully, not as an automatic swap.

A 185R15 tire for this Jaguar should first be chosen on the basis of correct size, radial construction, and compatibility with the car's 15-inch wheel. From there, the meaningful differences are brand, tire series, sidewall treatment, and the rim-width specifications attached to the specific product.

The available 185R15-style choices include Coker Classic, Michelin, Avon, and Universal Vintage Tire, with blackwall, narrow whitewall, and redline options. Some products also vary in weight, load specification, or wheel-width range. A buyer trying to balance appearance and road use should compare those details closely rather than choosing only by sidewall style.

Sidewall choices for the 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S include blackwall, narrow whitewall, redline, and wide whitewall, depending on the tire size and product selected. The 185R15 radial options include blackwall, narrow whitewall, and redline, while 640-15 bias-ply offerings add both narrow and wider whitewall treatments.

That gives the car very different visual personalities even before construction is considered. A blackwall often suits a restrained sporting look, while whitewalls lean more formal and redlines create a more distinctive period-style accent. Sidewall appearance should be matched to the car's restoration direction and the chosen size rather than selected independently of fitment.

Tires for the 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S are available from Coker Classic, Michelin, Avon, Universal Vintage Tire, BFGoodrich, Firestone, and Excelsior. The brand mix depends on whether the car is being fitted with the 185R15 radial size or the 640-15 bias-ply size.

Brand choice should be considered alongside the rest of the product details, not by name alone. Some brands appear in radial touring-style offerings, while others are tied more closely to traditional bias-ply construction and vintage sidewall treatments. It helps to compare tire series, sidewall appearance, and wheel-width compatibility before narrowing the field.

For a period-style presentation, the 640-15 bias-ply fitment is the most traditional starting point on a 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S. That size keeps the vintage numeric format and opens the door to blackwall, narrow whitewall, and wide whitewall treatments that suit a classic saloon's visual character.

Exact originality can vary by market, trim history, and how the individual car was delivered, so buyers pursuing a high-level restoration should compare tire appearance against marque references and vehicle-specific historical documentation. For a road-driven car, a radial 185R15 can still deliver a restoration-aware look, especially in understated sidewall styles.

Tire construction changes more than ride and handling on a restored 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S; it also changes the way the car sits visually. A 640-15 bias-ply brings a more traditional vintage presentation, while a 185R15 radial introduces a later-style metric tire format and a different sidewall character.

That is why construction choice should be made early in the restoration process rather than after the car is finished. Once wheel finish, stance, and trim details are in place, sidewall style becomes much more noticeable. Matching the tire's construction and sidewall treatment to the overall restoration goal usually produces a more coherent result.

Yes. A 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S may have wheel, suspension, or ride-height changes that alter how either a 185R15 radial or a 640-15 bias-ply fits the car. Even though both primary sizes are built for 15-inch rims, wheel width and body clearance can change substantially once modifications enter the picture.

Aftermarket wheels, different offsets, lowered springs, steering component changes, and body repairs can all influence available space. A buyer should inspect the actual wheel dimensions on the car and check clearance at the fender, suspension, and steering lock points before choosing a tire. That step is especially important when moving from bias-ply sizing to a radial alternative.

Before road use, inspect the wheels for correct diameter and sound condition, make sure the tires are inflated properly for the chosen setup, and look over the car's suspension and steering components. On a vintage Jaguar, fresh tires can only perform as intended if the wheel and chassis condition are equally ready.

A careful owner should also check for rubbing marks, uneven ride height, loose wheel hardware, and any signs that the car has been sitting long enough to develop suspension or brake issues. After the first few drives, recheck pressure, look for unusual wear patterns, and confirm that nothing contacts the tire through turns or bumps.

Collector-car tires on a 1960 Jaguar 2.4, 3.4, 3.8 & 3.8S should be checked regularly for pressure loss, tread wear, sidewall cracking, cuts, bulges, and signs of flat-spotting from long storage. This applies whether the car wears 185R15 radials or 640-15 bias-ply tires, because low annual mileage can still hide age-related deterioration.

Storage conditions matter as much as mileage on a vintage car. Keeping the Jaguar away from prolonged sunlight, excess heat, moisture, and ozone sources helps protect the rubber, and moving the car periodically can reduce long-term stress in one contact patch area. Any tire showing age-related damage deserves professional evaluation before regular road use.