1976 Mazda RX-3 Tires

The 1976 Mazda RX-3 uses two primary tire sizes: 155R13 in radial construction and 560-13 in bias-ply construction. Both apply to the RX-3 Base and both are built around a 13-inch rim, so the fitment decision is more about tire type and presentation than about moving to a different wheel diameter.

That means the next step is deciding which setup suits the car and the way it is used. A 560-13 bias-ply keeps a more traditional vintage look, while a 155R13 radial gives a more familiar radial-format option. Wheel width, tire clearance, and the car's current setup should still be confirmed before making the final selection.

The tire fitments for a 1976 Mazda RX-3 are built around a 13-inch rim diameter. Both the 155R13 radial option and the 560-13 bias-ply option use that same 13-inch wheel diameter, so there is no split here between different rim diameters for the covered fitments.

Rim diameter is only part of the fitment picture, though. The wheel's actual width should also be checked, especially if the car has been changed from its earlier setup or fitted with aftermarket wheels. That becomes even more important when comparing bias-ply sizing with radial sizing, since wheel width recommendations can differ.

The 1976 Mazda RX-3 Base follows the same fitment pattern for this model year, using either 155R13 radial tires or 560-13 bias-ply tires. Rather than splitting into a different size by trim, the Base keeps the same 13-inch tire-size choices and leaves construction as the main point of difference.

That makes sub-model identification straightforward, but the owner still needs to confirm which tire type is already on the car or which direction the car is being taken. A restoration-minded build may lean toward the 560-13 presentation, while a radial-equipped driver car may call for a 155R13 approach and matching wheel-width compatibility.

560-13 is a bias-ply tire size for the 1976 Mazda RX-3. It uses a vintage numeric sizing format and represents the more traditional construction choice for this car, distinct from the 155R13 radial option that also fits the RX-3 on a 13-inch rim.

That distinction matters because construction affects both the car's appearance and the kind of tire choices available. In 560-13, the RX-3 can be fitted with classic whitewall bias-ply tires from BFGoodrich and Firestone. Anyone moving away from this size toward a radial alternative should verify wheel width and overall fitment before making the change.

Radial equivalents for 560-13 include 155R13 as the 80-series metric radial, P155/75R13 as the P-metric 75-series radial, and P155/70R13 as the P-metric 70-series radial. Those sizes provide three different radial-format paths for someone comparing modern alternatives to the original numeric bias-ply designation.

Each equivalent should be treated as a fitment option to evaluate rather than an automatic substitute. The recommended rim-width range attached to this equivalent-sizing path is 4 to 5 inches, and the car should also be checked for wheel compatibility, clearance, and overall tire dimensions before a conversion from the original bias-ply setup.

Start by confirming the wheel diameter and the actual wheel width on the car. A 1976 Mazda RX-3 using 560-13 bias-ply tires can be compared against radial equivalents such as 155R13, P155/75R13, and P155/70R13, but those options should be matched carefully to the wheel and the car's existing setup.

The practical checks include tire-to-fender clearance, steering clearance, suspension condition, and the car's current ride height. Radial tires also change the sizing format, so it helps to inspect whether the wheels are still stock or have already been changed. A careful conversion keeps the car visually balanced and avoids surprises once it is back on the road.

The main decision for a 1976 Mazda RX-3 is choosing between the 560-13 bias-ply fitment and the 155R13 radial fitment. Both use a 13-inch rim, but they serve different goals. Bias-ply choices lean toward vintage presentation, while radial choices bring a more familiar modern tire format and blackwall styling.

After choosing the correct size path, compare details that affect the end result on the car. Sidewall style, tire series, brand, rim-width compatibility, weight, and load specifications all help narrow the field. It also helps to think about how the RX-3 will be used, whether for restoration display, occasional cruising, or more regular road driving.

The available sidewall styles for the 1976 Mazda RX-3 depend on tire size and construction. In 155R13 radial fitment, the current choices are blackwall tires. In 560-13 bias-ply fitment, the available styles include narrow whitewall and wide whitewall options, giving the car a more distinctly vintage visual character.

That makes sidewall style one of the most noticeable appearance decisions on this car. A blackwall radial keeps the look simple and understated, while whitewall bias-ply tires shift the RX-3 toward a stronger period-style impression. The best choice depends on the overall build theme and whether the goal is road use with radial sizing or a more restoration-oriented presentation.

Tires for the 1976 Mazda RX-3 are available from Michelin, Dunlop, BFGoodrich, and Firestone. Michelin and Dunlop cover the 155R13 radial side, while BFGoodrich and Firestone supply 560-13 bias-ply options. That spread gives the RX-3 owner a useful mix of construction types and visual styles rather than a single uniform product path.

Brand choice should still follow size and intended use first. Once the correct fitment path is clear, compare the available tire series, sidewall presentation, rim-width compatibility, and any load figures that matter to the car's setup. For an RX-3, the right choice is usually the one that best matches the wheel, the look, and how the car is actually driven.

For a period-style 1976 Mazda RX-3, the 560-13 bias-ply fitment is the most natural starting point because it preserves the older numeric sizing format and opens the door to traditional whitewall styling. That construction gives the car a presentation closer to what many restoration-minded owners expect from a compact 1970s import.

The exact look still depends on how the car is being restored. Narrow whitewall and wide whitewall options create noticeably different visual results, and a blackwall 155R13 radial gives a different era impression altogether. When exact originality matters, compare the tire choice against marque references, period photos, and vehicle-specific restoration guidance before settling on a final look.

Tire construction changes the look of a restored 1976 Mazda RX-3 more than many owners expect. A 560-13 bias-ply keeps the car in a traditional vintage format, especially when paired with narrow or wide whitewall styling. A 155R13 radial, by contrast, gives the car a blackwall radial presentation that feels more modern in character.

That visual shift matters because tire shape and sidewall treatment strongly influence how a small 1970s car sits and reads at a glance. The best choice depends on whether the build is aiming for a restoration-oriented appearance or a driver-focused setup with radial construction. Either way, keeping the correct 13-inch fitment is the first step toward a balanced result.

Yes, modifications can affect tire fitment on a 1976 Mazda RX-3 even when the car uses the correct basic size. Changes such as aftermarket wheels, altered wheel width, suspension lowering, or body modifications can all influence how a 155R13 radial or 560-13 bias-ply tire sits in the wheel opening.

A modified RX-3 should be checked for steering clearance, fender clearance, and overall wheel compatibility before new tires go into service. Small cars can be especially sensitive to changes in offset and ride height. Confirming the actual wheel setup on the car is the safest way to avoid rubbing, odd stance, or an unintended mismatch between tire and wheel.

Before driving a 1976 Mazda RX-3 on new tires, inspect the wheels, valve stems, lug hardware, and general wheel condition, then confirm that all four tires are the intended size and properly seated. It also makes sense to check inflation, visible sidewall condition, tread area, and any sign of interference once the car is back on the ground.

A short initial road test helps reveal rubbing, pull, vibration, or clearance problems that may not be obvious in the garage. On an older RX-3, suspension wear and steering play can also affect how the car feels on fresh tires. Catching those issues early makes the first drive more predictable and protects the new tire investment.

Tires on a collector 1976 Mazda RX-3 should be inspected regularly for cracking, flat spotting, cuts, bulges, and gradual air loss, especially if the car spends long periods parked. Collector cars often age tires by time and storage conditions rather than mileage alone, so visual condition matters as much as tread depth.

Proper inflation and clean, dry storage help preserve both radial and bias-ply tires. It also helps to keep the car away from prolonged sunlight, ozone sources, and extreme heat when possible. Before longer drives, give the tires another close look and confirm that the wheel and suspension setup has not changed since the last time the car was serviced.