1965 Morgan Plus 4 Tires

A 1965 Morgan Plus 4 can use 155R15, 560-15, 165R15, or 590-15, depending on the exact sub-model and whether the car is set up with radial or bias-ply tires. The Base configuration uses 155R15 or 560-15, while the Plus configuration uses 165R15 or 590-15.

That means the first step is confirming whether the car is a Base or a Plus, not simply ordering by year and model name alone. After that, check whether the wheels and overall setup are intended for radial or bias-ply construction, especially if the car has been restored, modified, or changed from its earlier tire style.

The 1965 Morgan Plus 4 uses 15-inch rims across its primary tire fitments. Both the radial sizes, 155R15 and 165R15, and the bias-ply sizes, 560-15 and 590-15, are built around the same 15-inch wheel diameter.

Rim diameter is only part of the fitment picture, so wheel width still needs to match the tire being considered. On a car like a Morgan, where wheel and tire proportions affect stance and clearance, it is smart to verify the actual wheel width on the car before moving from one size family or construction type to another.

No, the 1965 Morgan Plus 4 sub-models do not all use the same tire size. The Base uses the narrower 155R15 radial or 560-15 bias-ply, while the Plus uses the wider 165R15 radial or 590-15 bias-ply.

That difference matters because it changes more than the number on the sidewall. A buyer comparing products needs to start with the correct sub-model, then confirm the existing wheel width and tire construction so the selected tire matches the car's setup, appearance goals, and available fender and steering clearance.

On the 1965 Morgan Plus 4, 560-15 is a numeric bias-ply tire size used on the Base configuration. Its radial equivalent options are separate sizes, including 155R15 as an 80-series metric radial and 560R15 as a bias-look radial, rather than 560-15 itself being a radial designation.

That distinction is important because bias-ply and radial construction can change the way the car looks and feels even when the wheel diameter remains 15 inches. Before converting, check the wheel width, confirm the car's current setup, and compare the alternative tire's dimensions and clearance rather than assuming any same-diameter tire behaves the same way.

Radial equivalents for 590-15 include 165R15 as an 80-series metric radial, P165/75R15 as a 75-series P-metric radial, and P175/70R15 as a 70-series P-metric radial. These alternatives give the 1965 Morgan Plus 4 Plus owner more than one radial sizing convention to consider while staying in a 15-inch fitment family.

Those options are not identical in format, so the choice should be guided by the wheel setup and the type of look the owner wants. A recommended rim-width range of 4-5 inches is associated with the equivalency, and clearance around the fenders and steering should still be verified before making the change.

Start by confirming the car's exact sub-model and original size family, since a Base and a Plus do not share the same bias-ply and radial pairings. A Base moves between 560-15 and 155R15, while a Plus moves between 590-15 and 165R15 or the other stated radial equivalents tied to that bias-ply size.

Next, inspect the actual wheel width on the car, compare the alternative tire's fitment range, and make sure there is enough clearance at the fenders and during steering movement. Suspension condition, ride height, and any non-stock wheels can affect the result, so conversion should be approached as a full fitment check rather than a simple construction swap.

The first consideration is whether the car is a Base or a Plus, because the 1965 Morgan Plus 4 uses different size pairings by sub-model. After that, the main choice is between bias-ply and radial construction, since each sub-model can be fitted with either a vintage numeric bias-ply size or a radial size on a 15-inch rim.

Once the correct size family is established, compare the tire's intended appearance, sidewall style, brand, and wheel-width compatibility. A restoration-oriented car may lean toward traditional bias-ply styling, while a driver-focused car may point toward one of the radial offerings, but the final decision still needs to match the actual wheels and overall setup.

1965 Morgan Plus 4 tires are available in blackwall, narrow whitewall, and wide whitewall styles, depending on the exact size and product line. Blackwall is the broadest offering across both radial and bias-ply sizes, while whitewall choices appear in several 560-15 and 165R15 products and in selected 590-15 and 165R15 applications.

Sidewall style is mainly an appearance decision, but it should be made only after the correct size and construction are settled. A Morgan's visual character changes noticeably with whitewall width, so buyers often compare period-style presentation against their specific restoration direction instead of treating sidewall design as a purely cosmetic afterthought.

Tires for the 1965 Morgan Plus 4 are available from Firestone, Michelin, Avon, Vredestein, BFGoodrich, US Royal, Coker Classic, American Classic, and Pro-Trac, depending on the exact size. Brand availability varies by whether the car uses 155R15, 560-15, 165R15, or 590-15 and by whether the buyer wants radial or bias-ply construction.

Brand choice should be compared alongside tire series, sidewall treatment, and wheel-width suitability rather than in isolation. Since the Morgan has multiple valid fitment paths, the better question is which brand offers the right combination for the car's exact sub-model, desired appearance, and intended use instead of simply choosing by name alone.

For a period-style 1965 Morgan Plus 4, the starting point is usually the correct bias-ply size for the sub-model: 560-15 for the Base or 590-15 for the Plus. Those sizes keep the car in a vintage numeric format and preserve the traditional visual character many owners want in a restoration-oriented presentation.

The final choice depends on how strictly the car is being restored and what sidewall look suits that goal. Blackwall, narrow whitewall, and wide whitewall options exist in the applicable size range, but exact originality should be verified through marque-specific references or period documentation if the appearance needs to match a very specific historical standard.

Tire construction can noticeably change the look of a restored 1965 Morgan Plus 4 even when the wheel diameter stays at 15 inches. Bias-ply sizes such as 560-15 and 590-15 present the car in a more traditional numeric format, while radial sizes such as 155R15 and 165R15 bring a later-style sizing convention and broader product variation.

That matters on a Morgan because the car's narrow body, exposed fenders, and upright proportions make tire shape and sidewall presentation easy to see. Buyers restoring for show, touring, or mixed use should weigh visual authenticity against construction preference, then confirm the selected tire still matches the car's wheel width and chassis clearance.

Yes, modifications can affect tire fitment on a 1965 Morgan Plus 4 even when the tire size itself is correct for the sub-model. Changes such as aftermarket wheels, altered wheel width, suspension work, ride-height changes, or body adjustments can influence how a 155R15, 560-15, 165R15, or 590-15 tire sits and clears the car.

A modified setup should be measured from the actual car rather than assumed from stock fitment alone. Check steering clearance, fender space, and wheel dimensions before selecting a replacement, especially if the goal is to move between bias-ply and radial construction or to use one of the stated radial equivalents for a bias-ply size.

Before driving a 1965 Morgan Plus 4 on new tires, inspect the wheels for correct diameter and width, confirm the tires are mounted in the proper size for the car's Base or Plus configuration, and make sure inflation is set appropriately for the tire being used. It is also worth checking that there is no rubbing at full steering lock.

A collector-era sports car also benefits from a quick review of suspension condition, wheel hardware, and any signs of uneven ride height that could affect clearance. After the first short drive, recheck pressure and look for fresh marks near the fenders or steering components so any fitment issue is caught early.

Collector-use tires on a 1965 Morgan Plus 4 should be inspected regularly for air loss, tread wear, sidewall cracking, bulges, cuts, and any signs of age-related deterioration. That applies whether the car wears radial sizes such as 155R15 or 165R15 or bias-ply sizes such as 560-15 or 590-15.

Storage conditions matter just as much as mileage on a lightly used Morgan. Keep the car away from prolonged heat, direct sunlight, moisture, and ozone sources when possible, and check pressure before each drive rather than assuming a parked vehicle has held steady. Low annual mileage does not prevent tires from aging out over time.