Introduction

The Mazda RX-7 is one of the most iconic Japanese sports cars ever built, spanning three generations: FB (SA22C), FC3S, and FD3S. Whether you are restoring, modifying, or maintaining your RX-7, correct wheel and tyre specifications are critical for performance, safety, and handling.

This guide breaks down factory tyre sizes, wheel dimensions, bolt pattern (PCD), centre bore, and torque specs for each generation.

Generation Breakdown

1st Generation – RX-7 FB (SA22C)

Years: 1978–1985

Factory Wheel & Tyre Specs

• Wheel Size: 13x5J / 14x5.5J

• Tyre Size: 185/70R13, 185/70R14

• Bolt Pattern (PCD): 4x110

• Offset: +20 to +30

Centre Bore

• 59.5mm (common Mazda hub size of the era)

Wheel Nut / Thread

• M12 x 1.5

Torque Spec

• 85–95 Nm

2nd Generation – RX-7 FC3S

Years: 1985–1992

Factory Wheel & Tyre Specs

• Base Models:

  • Wheel: 14x5.5J

  • Tyre: 185/70R14

• Turbo / Higher Trim:

  • Wheel: 15x6J / 16x7J

  • Tyre: 205/60R15, 205/55R16

• Bolt Pattern (PCD):

  • Early models: 4x114.3

  • Turbo / later models: 5x114.3

Centre Bore

• 59.5mm

Wheel Nut / Thread

• M12 x 1.5

Torque Spec

• 95–105 Nm

3rd Generation – RX-7 FD3S

Years: 1992–2002

Factory Wheel & Tyre Specs

• Wheel Size: 16x8J

• Tyre Size: 225/50R16

• Optional later models: 17 inch upgrades

• Bolt Pattern (PCD):

  • 5x114.3

• Offset: +45 to +50

Centre Bore

• 67.1mm

Wheel Nut / Thread

• M12 x 1.5

Torque Spec

• 100–110 Nm

Key Fitment Summary (All Generations)

Tyre Recommendations (Australia Use Case)

Street / Daily

• Continental UltraContact UC7

• Michelin Primacy 5

• Yokohama ES32

Performance / Spirited Driving

• Continental MaxContact MC7

• Michelin Pilot Sport 5

• Yokohama Advan V601

Track / High Performance RX-7 Builds

• Yokohama AD09

• Michelin Pilot Sport Cup 2

• Nankang AR-1

Important Fitment Notes

• FD models require 67.1mm hub-centric fitment – incorrect bore leads to vibration

• FC models may vary between 4-lug and 5-lug conversions

• Always confirm brake clearance, especially on FD twin turbo models

• Aftermarket wheels often need hub rings

Why Proper Fitment Matters

Incorrect tyre or wheel fitment can lead to:

• Poor handling and instability

• Uneven tyre wear

• Steering vibration

• Safety risks at high speed

At AUTOSPORT TYREWORLD, we ensure every RX-7 setup is:

• Correctly matched

• Professionally fitted

• Balanced and aligned

Our Locations

AUTOSPORT TYREWORLD

• Magill
  647 Magill Road, Magill SA 5072
  PH: 0452 641 023

• Wingfield
  411 Grand Junction Road, Wingfield SA 5013
  PH: 0433 645 411

• Clarence Gardens
  911 South Road, Clarence Gardens SA 5039
  PH: 0420 299 911