Mazda RX-7 Tyre Size Guide (FB, FC, FD) – Wheel Specs, PCD, Centre Bore & Torque Data

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.

Need tyres for your Mazda RX in Adelaide?

Autosport Tyre World Magill can help confirm the correct tyre size, load rating, wheel fitment and alignment needs before you order.

Call Magill: 0452 641 023 Get fitted tyre quote View tyres Book wheel alignment

Tyre options and fitment help for Mazda RX

Use these links to check available tyre options by size. If you are unsure which size suits your exact model, send us your tyre placard photo before ordering.

Size / service Best use Shop or search Fitment check
185/70R13 Daily driving, comfort and value options View 185/70R13 tyre options Check fitted availability
185/70R14 Daily driving, comfort and value options View 185/70R14 tyre options Check fitted availability
205/60R15 Daily driving, comfort and value options View 205/60R15 tyre options Check fitted availability
205/55R16 Daily driving, comfort and value options View 205/55R16 tyre options Check fitted availability
225/50R16 Daily driving, comfort and value options View 225/50R16 tyre options Check fitted availability
Wheel alignment Recommended after tyre or wheel changes Wheel alignment Adelaide Call Magill

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)

Generation PCD Centre Bore Thread Torque
FB 4x110 59.5mm M12x1.5 85–95 Nm
FC 4x114.3 / 5x114.3 59.5mm M12x1.5 95–105 Nm
FD 5x114.3 67.1mm M12x1.5 100–110 Nm

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

Need tyres or wheel alignment for your Mazda RX in Adelaide?

Send us your tyre size, vehicle model or tyre placard photo and the team at Autosport Tyre World Magill will confirm suitable options, availability and fitted advice.

Autosport Tyre World Magill: 647 Magill Road, Magill SA 5072. Phone 0452 641 023.

Call Magill Get fitted tyre quote View tyres Wheel alignment Adelaide