1958 MG MGA Tires

The 1958 MG MGA uses two primary tire sizes: 560-15 in bias-ply construction and 155R15 in radial construction. Both sizes are tied to 15-inch wheels, so the main fitment decision is not wheel diameter but which construction and size format best match the car's setup and intended use.

That means the right choice depends on how the MGA is equipped and how the owner wants it to present on the road. A restoration-minded car may stay with 560-15 bias-ply, while a road-driven car may be evaluated around 155R15 radial. Wheel width, tire clearance, and any past changes to wheels or suspension should be confirmed before making the final selection.

The primary tire fitments for a 1958 MG MGA both use a 15-inch rim diameter. That applies to the 560-15 bias-ply size and the 155R15 radial size, so the wheel diameter remains consistent even though the construction and sizing systems are different.

Rim diameter is only part of the picture, especially on a small British sports car where wheel width can influence tire choice. Before selecting a tire, it helps to verify the actual wheel on the car, confirm that it is still a 15-inch wheel, and compare the wheel width against the range used by the tire being considered.

The 1958 MG MGA 1600 follows the same overall fitment pattern, with 560-15 bias-ply and 155R15 radial size paths. In practical terms, that means the 1600 is not separated by a different wheel diameter or a completely different tire family within this fitment range.

The important step is deciding which path matches the car's current wheels and the owner's goals. One MGA 1600 may be kept in a more traditional bias-ply presentation, while another may be set up around a radial. Confirming actual wheel width and checking for any prior modifications helps avoid choosing a tire that clashes with the car's present configuration.

560-15 is the bias-ply tire size used on the 1958 MG MGA. It is a vintage numeric bias-ply format, with the 560 designation reflecting the nominal width class and the 15 identifying the wheel diameter.

That matters because a bias-ply tire affects both the visual presentation and the construction type on the car. Owners choosing 560-15 can compare blackwall, narrow whitewall, and wide whitewall styles, while owners considering a move away from bias-ply should evaluate the radial-equivalent options carefully and confirm wheel width, overall dimensions, and clearance before changing constructions.

Radial equivalents for 560-15 include 155R15 and 560R15. The 155R15 option is an 80-series metric radial, while 560R15 is a bias-look radial equivalent that keeps a more traditional appearance while moving to radial construction.

These sizes are useful alternatives, but they should be treated as equivalents rather than automatic replacements. The recommended rim-width range for the equivalent setup is 4 to 5 inches, and the car should also be checked for actual wheel size, clearance around the fenders and suspension, and any non-original wheel or chassis changes before conversion.

Either construction can be appropriate for a 1958 MG MGA because both 560-15 bias-ply and 155R15 radial fitments are used on the car. The better choice depends on whether the priority is maintaining a traditional period-style setup or selecting a radial format within the established 15-inch fitment range.

Bias-ply tires usually make the strongest visual statement for a restoration-oriented MGA, especially when whitewall style is part of the plan. Radials may appeal to owners who want a different construction path for regular road use. The decision should be made with the actual wheel width, the vehicle's present stance, and any prior wheel or suspension changes in mind.

Start with the fact that 560-15 is the MGA's bias-ply size, so the choice is mainly about presentation, brand, and wheel compatibility rather than chasing a different diameter. Available options include blackwall, narrow whitewall, and wide whitewall versions from Firestone, US Royal, Coker Classic, and Pro-Trac within bias-ply construction.

From there, compare the tire's intended character against the car's role. A restoration-minded MGA may favor a traditional sidewall treatment, while a more specialized build may focus on a different bias-ply series. Wheel width should be checked carefully, since some 560-15 offerings are tied to a single rim width while others allow a broader range.

The 1958 MG MGA has meaningful sidewall variety depending on tire size and construction. In 560-15 bias-ply, blackwall, narrow whitewall, and wide whitewall options are available. In 155R15 radial, the available products are blackwall, which gives the radial side of the fitment a more restrained and traditional sports-car presentation.

That sidewall choice changes the look of the car as much as the construction does. A blackwall radial or blackwall bias-ply typically suits a cleaner sporting appearance, while whitewall bias-ply options create a more decorative period-style look. Owners aiming for a historically faithful restoration should compare sidewall style to the car's documentation and era-specific presentation before deciding.

Tire choices for the 1958 MG MGA include Firestone, Michelin, Avon, Vredestein, US Royal, Coker Classic, and Pro-Trac. Those brands span both 155R15 radial and 560-15 bias-ply fitments, so the brand decision comes after the owner settles on the correct size path and construction type.

Brand comparison is most useful when it is tied to the kind of tire being considered. Some offerings emphasize classic radial touring formats, while others focus on traditional bias-ply appearance or specialty use. Instead of treating brand as the first filter, it makes more sense to confirm the tire size, wheel dimensions, sidewall style, and intended use of the MGA first.

For a period-style 1958 MG MGA, 560-15 bias-ply is the most natural starting point because it keeps the car in its traditional numeric bias-ply format. Within that size, blackwall, narrow whitewall, and wide whitewall choices are available, allowing the owner to shape the car's presentation without moving away from the established bias-ply fitment.

The best appearance choice depends on how the car is being restored and what era-specific look is being pursued. Exact originality can vary by market, trim history, and previous restoration decisions, so owners aiming for strict historical accuracy should compare the tire style against marque references, period photography, or trusted restoration documentation before finalizing a sidewall treatment.

Tire construction has a visible effect on a restored 1958 MG MGA because 560-15 bias-ply and 155R15 radial do not present the car in quite the same way. The bias-ply option supports a more traditional small-sports-car look, while the radial choice moves the car into a later tire format even though it stays on a 15-inch rim.

That visual difference matters most when the restoration goal is authenticity in stance and presentation rather than simple drivability. A bias-look radial such as 560R15 can also enter the conversation for owners who want radial construction without completely leaving the vintage look behind. Final choice should still be checked against wheel width and the car's overall setup.

Yes, modifications can affect tire fitment on a 1958 MG MGA even when the car stays within a correct-looking 15-inch wheel diameter. Aftermarket wheels, changes in wheel width, suspension alterations, ride-height changes, or bodywork differences can all influence how a 560-15 or 155R15 tire sits and clears the car.

An MGA that has been restored over many decades may not still match its original wheel and chassis setup. Before choosing tires, it helps to measure the actual wheel dimensions on the car and inspect clearance at the fenders, steering components, and suspension. That check is especially important when moving between bias-ply and radial constructions or considering an equivalent size.

Before driving a 1958 MG MGA on new tires, inspect the wheels for correct diameter and condition, make sure the tires seat properly, and verify inflation pressure against the tire and vehicle requirements being used. A close look at brake components, wheel fasteners, and general clearance around the tire is also worthwhile.

A collector-era sports car deserves a short, careful shakedown before longer use. Watch for rubbing during steering and suspension movement, recheck air pressure after the first drive, and listen for anything unusual from the wheel area. It is also smart to confirm that the spare, jack equipment, and overall tire condition match the way the car will actually be used.

Tires on a collector 1958 MG MGA should be maintained with regular pressure checks, periodic visual inspection, and careful storage habits. Whether the car uses 560-15 bias-ply or 155R15 radial tires, the owner should watch for cracking, cuts, bulges, uneven wear, and slow air loss, especially if the car is driven infrequently.

Long periods of sitting can age tires even when tread wear is minimal. Keeping the MGA away from prolonged sunlight, excess heat, and ozone sources helps preserve the rubber, and occasional movement can reduce flat-spotting concerns. Before any longer drive, a quick inspection of tire condition, inflation, and visible clearance is a sensible part of recommissioning the car.