1975 Mazda RX-3 Tires

The 1975 Mazda RX-3 uses two primary tire sizes: 155R13 in radial construction and 560-13 in bias-ply construction. Both sizes are associated with the car on 13-inch rims, so the fitment question is less about wheel diameter and more about choosing the construction and tire style that match the car's setup.

That choice affects both appearance and selection. A 155R13 points you toward blackwall radial offerings, while 560-13 opens the door to traditional bias-ply designs with whitewall treatments. Checking the actual wheels on the car is still important, especially if it has been changed from stock-style rims at some point in its life.

The primary tire fitments for a 1975 Mazda RX-3 use a 13-inch rim diameter. Both the 155R13 radial and the 560-13 bias-ply are built around that same wheel diameter, which keeps the basic rim-size question straightforward even though the car has more than one tire-size format.

Rim diameter is only part of the fitment picture, though. Product choices in these sizes can call for different wheel-width ranges, particularly when comparing radial and bias-ply options. Measuring the wheel width already on the car is a smart step before choosing between a narrow whitewall bias-ply, a wide whitewall bias-ply, or a radial blackwall alternative.

560-13 is a vintage numeric bias-ply tire size. The 5.60 refers to the nominal section width in inches, and the 13 refers to the wheel diameter in inches. On a 1975 Mazda RX-3, that size represents a bias-ply fitment rather than the radial-format 155R13 option.

Understanding that format helps when comparing period-style tires to modern radial alternatives. A 560-13 keeps the traditional size language and construction, while equivalent radial options use metric or P-metric sizing instead. Owners looking at this size should also consider wheel width, sidewall appearance, and whether the goal is a restoration-oriented look or a different road-use character.

560-13 is a bias-ply tire size for the 1975 Mazda RX-3. It uses the older numeric sizing format and is offered in classic bias-ply series with whitewall treatments, which makes it the traditional-looking option alongside the car's radial-format 155R13 fitment.

That matters because a bias-ply selection affects both the look of the car and the wheel-width range you need to verify. The available 560-13 products are tied to relatively narrow 13-inch wheels, so anyone changing from one construction to another should confirm the actual wheel width and make sure the tire suits the car's present configuration.

Radial equivalents for 560-13 include 155R13, P155/75R13, and P155/70R13. Those cover an 80-series metric radial format, a 75-series P-metric radial, and a 70-series P-metric radial. Each one serves as a radial alternative to the original bias-ply size rather than another primary bias-ply fitment.

The main difference between those equivalents is the sizing convention and profile family, not the wheel diameter alone. A recommended rim-width range of 4 to 5 inches applies to the equivalent fitment, and the final decision should include checking wheel width, overall tire dimensions, and available clearance before moving away from the 560-13 setup.

Start by confirming the wheel diameter and width already on the car, then compare the intended radial size to the original 560-13 fitment. For the 1975 Mazda RX-3, radial alternatives tied to that bias-ply size include 155R13, P155/75R13, and P155/70R13, with a recommended wheel-width range of 4 to 5 inches for the equivalent fitment.

The next step is checking practical fitment around the car itself. Tire-to-fender space, steering clearance, suspension condition, and overall dimensions all matter before making the change. On a collector vehicle, it also helps to decide whether the priority is preserving a traditional period look or moving toward a more modern radial-style presentation.

Start with the correct primary size and construction for the way the car is being kept. A 1975 Mazda RX-3 can use either a 155R13 radial or a 560-13 bias-ply, both on 13-inch wheels, so the decision often comes down to whether the owner wants radial-format fitment or a more traditional bias-ply presentation.

After that, compare the practical details that shape the final choice. Wheel width, sidewall style, tire series, and brand all matter, and the available products are not identical in those respects. A radial blackwall suits one type of build, while narrow or wide whitewall bias-ply tires support a different visual direction.

Sidewall choices for the 1975 Mazda RX-3 include blackwall, narrow whitewall, and wide whitewall styles. The 155R13 radial options are blackwall tires, while the 560-13 bias-ply options include both narrow whitewall and wide whitewall treatments, giving the car distinctly different visual personalities within the same 13-inch fitment family.

That makes sidewall selection an appearance decision as much as a fitment decision. Blackwalls tend to suit a restrained sports-compact look, while the whitewall bias-ply options lean more toward vintage presentation. Matching the sidewall to the car's wheels, trim, and restoration direction usually leads to a more coherent result than choosing by size alone.

The 1975 Mazda RX-3 has tire options from Michelin, Dunlop, BFGoodrich, and Firestone. Michelin and Dunlop cover the 155R13 radial side of the fitment, while BFGoodrich and Firestone supply 560-13 bias-ply choices, so the brand choice is also tied closely to the construction and visual style you want.

Comparing brands makes the most sense after narrowing the size and tire type first. Once that is settled, look at tire series, sidewall treatment, and wheel-width compatibility rather than assuming all products in the same nominal size serve the same purpose. That approach keeps the selection centered on the RX-3's actual setup and intended use.

A period-style 1975 Mazda RX-3 can be approached in two different ways. The 560-13 bias-ply size supports a more traditional vintage presentation, especially with narrow or wide whitewall sidewalls, while 155R13 radials maintain the 13-inch fitment in a style that also feels appropriate to a mid-1970s compact import.

The better choice depends on what version of period character matters most for the car. Some owners prioritize a classic bias-ply look, while others want the appearance of an era-correct radial-format import tire. When exact originality matters, marque references and restoration documentation should guide the final appearance decisions beyond size alone.

Tire construction changes the visual character of a restored 1975 Mazda RX-3 more than many owners expect. A 560-13 bias-ply gives the car a more traditional vintage stance and opens the door to whitewall styling, while a 155R13 radial creates a more modern-looking sidewall profile and is offered here in blackwall form.

That difference becomes especially noticeable on a smaller car where the tire sidewall is a strong part of the overall look. Choosing between bias-ply and radial is not just a technical decision; it shapes how authentic, restrained, or custom the finished car appears. Matching the construction to the restoration theme usually produces the best visual result.

Yes. A 1975 Mazda RX-3 may share the same 13-inch rim diameter across its primary tire options, but wheel changes, suspension alterations, ride-height changes, and body modifications can all affect how either a 155R13 or 560-13 tire works on the car. Even small changes can influence available space around the tire.

That is why the current setup matters more than assumptions about stock configuration. If the RX-3 has aftermarket wheels, verify width as well as diameter before selecting a tire. Steering clearance, fender clearance, and the car's stance should all be checked closely, especially when moving between bias-ply and radial constructions or considering an equivalent radial size.

Before road use, inspect the wheels for the correct diameter and condition, confirm that the tires seat properly, and check that there is no interference at full steering lock. On a collector-era 1975 Mazda RX-3, it is also wise to look over suspension and steering components so the new tires are not being asked to compensate for worn hardware.

A careful walkaround after installation helps catch problems early. Check inflation pressure, make sure there are no cuts or visible sidewall issues, and recheck clearance once the car is on the ground. A short test drive followed by another inspection is a sensible way to confirm that the fitment and the rest of the chassis are working together properly.

Collector-car tires on a 1975 Mazda RX-3 should be maintained with regular pressure checks, routine visual inspections, and sensible storage habits. That applies whether the car wears 560-13 bias-ply tires or 155R13 radials. Low annual mileage does not stop aging, so sidewall condition, tread surface, and any signs of air loss deserve attention.

Long periods of sitting can be harder on a collector tire than frequent moderate use. Keeping the RX-3 away from prolonged sunlight, moisture, and ozone sources helps preserve the rubber, and occasional inspections for cracking, bulges, or flat spotting are worthwhile. Any tire showing age-related deterioration should be evaluated before regular road use resumes.