1960 Morgan Plus 4 Tires

The 1960 Morgan Plus 4 uses two primary tire sizes: 560-15 in bias-ply construction and 155R15 in radial construction. Both are 15-inch fitments, so the choice is not between different wheel diameters but between two different tire sizing systems and construction types.

That distinction matters because a bias-ply 560-15 and a radial 155R15 create different buying decisions. Start by confirming what is actually on the car now, especially if it has been driven, restored, or modified over the years. Once the present setup is clear, the next step is choosing the right tire style, brand, and wheel-width-compatible option within that fitment path.

The 1960 Morgan Plus 4 uses a 15-inch rim diameter with both of its primary tire sizes. That applies whether the car is fitted with the 560-15 bias-ply size or the 155R15 radial size, so rim diameter stays consistent across the main tire choices.

Rim diameter is only part of the fitment picture on a vintage sports car. Wheel width still needs to be checked before choosing among available tires, especially when switching between bias-ply and radial construction or when the car has replacement wheels. A measured wheel check helps prevent clearance problems and keeps the tire choice aligned with the narrow-rim requirements common to this size range.

Yes. The 1960 Morgan Plus 4 Base uses the same two fitment paths: 560-15 as a bias-ply size and 155R15 as a radial size. There is no separate tire-size split within the covered Base application, so sub-model identification is less of an issue here than construction choice.

That simplifies the search, but it does not eliminate the need to inspect the car itself. Many Morgans have seen long-term ownership changes, wheel replacements, or restoration work, and those changes can affect what tire makes the most sense now. Matching the tire to the car's current wheels and intended use is more important than assuming every surviving example remains set up the same way.

For the 1960 Morgan Plus 4, 560-15 is a bias-ply tire size. It uses the older numeric bias-ply sizing format and represents the traditional construction choice for this application, while 155R15 is the radial-format fitment that appears alongside it.

That matters because the decision is not simply about dimensions. Bias-ply and radial tires differ in construction, appearance, and the way owners usually approach a vintage sports car's setup. A car kept for period-style presentation may stay with 560-15, while a car already running radial-compatible tires may point you in another direction. Wheel width and clearance should be checked before changing from one construction path to the other.

Radial equivalents for 560-15 on a 1960 Morgan Plus 4 include 155R15 and 560R15. The 155R15 option is an 80-series metric radial equivalent, while 560R15 is the bias-look radial equivalent for owners who want a more traditional visual impression.

Those two options serve different purposes even though both are radial alternatives. The 155R15 follows a Euro-metric sizing convention, while 560R15 is intended to preserve more of the visual character associated with vintage tires. The equivalent path is tied to a recommended rim-width range of 4 to 5 inches, and the final choice should still be checked against wheel width, overall dimensions, and available clearance on the car.

Start with the wheel itself. A 1960 Morgan Plus 4 stays on a 15-inch rim diameter in either fitment path, but wheel width remains important when moving from 560-15 bias-ply to a radial alternative such as 155R15 or 560R15. The radial equivalent path also calls for attention to the 4 to 5 inch recommended rim-width range.

Clearance should be reviewed at the fenders, steering range, and suspension, especially on a lightweight sports car that may no longer sit exactly as it did when new. It also helps to inspect the present wheel and tire combination for prior restoration changes. Converting construction without confirming the wheel setup can lead to a tire choice that looks promising on paper but does not suit the actual car.

The first decision is construction. A 560-15 keeps the Plus 4 in a traditional bias-ply format, while 155R15 moves into a radial size on the same 15-inch rim diameter. After that, compare wheel-width compatibility, intended appearance, and how the car will actually be driven and maintained.

Product choice then becomes more specific. The 560-15 range includes blackwall and whitewall bias-ply tires, while 155R15 focuses on blackwall radial offerings across several vintage and sporting series. It helps to inspect the wheels already on the car before narrowing the list, since vintage sports cars often carry replacement wheels or long-ago setup changes that affect which option makes the most sense.

Sidewall choices for the 1960 Morgan Plus 4 depend on the tire size you choose. In 560-15 bias-ply form, available styles include blackwall, narrow whitewall, and wide whitewall. In 155R15 radial form, the available products stay with a blackwall presentation.

That means sidewall style can guide the decision as much as construction for some owners. A blackwall often suits a restrained sports-car look, while whitewall choices shift the car toward a more stylized period presentation. Because appearance preferences vary widely on restored British cars, it is worth viewing the sidewall choice as part of the whole wheel-and-tire presentation rather than as a purely cosmetic afterthought.

Tire choices for the 1960 Morgan Plus 4 include Firestone, Michelin, Avon, Vredestein, US Royal, Coker Classic, and Pro-Trac. Those brands are spread across the two main fitment paths, with several radial offerings in 155R15 and several bias-ply offerings in 560-15.

Brand matters mainly as part of a broader selection process rather than as a shortcut to the answer. It still helps to compare each tire's size, construction, sidewall treatment, tire series, and wheel-width suitability before deciding. A Plus 4 kept near a traditional presentation may lead you one direction, while a driver-oriented setup on narrow vintage rims may point you toward a different combination within the same overall fitment range.

A period-style 1960 Morgan Plus 4 often starts with the 560-15 bias-ply size because it preserves the vintage numeric format and traditional construction associated with the car's era. Within that size, blackwall, narrow whitewall, and wide whitewall choices create different visual outcomes without moving away from the bias-ply fitment path.

The right selection depends on what kind of restoration story the car is telling. Some owners want a restrained sports-car presentation, while others are aiming for a more stylized vintage appearance. When exact originality matters, compare the tire choice against marque references, period photos, or restoration documentation tied to the individual car rather than assuming any currently available sidewall treatment is automatically correct.

Tire construction changes the visual character of a restored 1960 Morgan Plus 4 as much as it changes the technical fitment path. A 560-15 bias-ply tire maintains a traditional vintage presentation, while a 155R15 radial introduces a later-style metric sidewall format even though it remains appropriate to the same 15-inch wheel diameter.

That difference becomes especially noticeable on an open British sports car where the wheel-and-tire package is easy to see. Owners who want radial construction without giving up as much traditional appearance may also consider the 560R15 bias-look radial equivalent. Appearance goals should be weighed alongside wheel compatibility and the car's present setup so the finished look and fitment work together.

Yes. Modifications can affect tire fitment on a 1960 Morgan Plus 4 even when the tire size itself is correct. Replacement wheels, changed wheel widths, suspension alterations, ride-height changes, or bodywork adjustments can all influence how a 560-15 or 155R15 tire sits and clears the car.

That is why the tire decision should start with the car as it exists today, not just the original application. A Plus 4 with aftermarket wheels or past restoration changes may need closer checking at the fenders and through full steering travel. Taking a few measurements before choosing a tire helps avoid chasing a historically familiar size that does not suit the current setup.

Before driving a 1960 Morgan Plus 4 on new tires, inspect the wheels, lug hardware, valve stems, and the basic condition of the suspension and steering components. It also makes sense to verify inflation, confirm that the tire seats properly on the rim, and check that there is no rubbing at rest.

A short, careful road test should follow with attention to steering feel, brake response, and clearance through turns and bumps. Vintage sports cars can reveal fitment issues only after the suspension begins to move. Rechecking tire pressure and looking for any fresh scuffing after that first drive is a sensible final step before using the car for regular road miles.

Collector-car tires on a 1960 Morgan Plus 4 should be maintained with regular pressure checks, periodic visual inspections, and attention to age-related condition as well as tread. Look for cracking, bulges, cuts, uneven wear, or signs of air loss, since low-use vintage cars often age their tires long before they wear them out.

Storage habits matter nearly as much as mileage. Keeping the car away from prolonged sunlight, excess heat, standing moisture, and ozone sources helps protect both bias-ply and radial tires. It also helps to inspect the tires before any longer outing, because a Plus 4 that spends much of its time parked can still develop condition issues that are easy to miss between drives.