Introduction

The Mazda RX-8 is one of the most unique Japanese sports cars ever built, powered by Mazda’s iconic rotary engine and designed with perfect 50:50 balance.

Whether you're maintaining your RX-8 or upgrading wheels and tyres, understanding factory specifications is critical for safety, performance, and compliance.

At AUTOSPORT TYREWORLD Adelaide, we regularly service RX-8 owners with performance tyres, wheel upgrades, and precision wheel alignment.

Mazda RX-8 Generations Overview

Series 1 (SE1) – 2003–2008

Series 2 (SE3P Facelift) – 2008–2012

Both generations share similar platform specifications, with minor updates in wheel design and tyre options.

Factory Wheel & Tyre Specifications

Series 1 RX-8 (2003–2008)

Factory Wheel Sizes

• 16x6.5 (base models)

• 17x7.0

• 18x8.0 (most common)

Factory Tyre Sizes

• 205/55R16

• 225/50R17

• 225/45R18

Offset (ET)

• +50 (common OEM spec)

Series 2 RX-8 (2008–2012)

Factory Wheel Sizes

• 18x8.0

• 19x8.0 (R3 performance models)

Factory Tyre Sizes

• 225/45R18

• 225/40R19

Performance Variant (R3)

• Sport-focused suspension

• Lightweight forged wheels

Core Fitment Specifications (All RX-8)

These are critical when selecting aftermarket wheels:

• PCD (Bolt Pattern): 5x114.3

• Thread Size: M12x1.5

• Centre Bore: 67.1 mm

• Typical Offset: +45 to +50

• Wheel Width Range: 7–8 inches OEM

Wheel Nut Torque Specification

• Factory Torque:
  108–147 Nm (80–108 ft-lb)

Industry practical range:

• Common workshop setting: 110–120 Nm

Important:

• Always torque in a star pattern

• Re-check after 50–100 km

Recommended Tyre Upgrades (Adelaide Driving)

At AUTOSPORT TYREWORLD, we typically recommend:

Street Performance

• 225/45R18 (OEM size)

• 235/40R18 (better grip upgrade)

Aggressive Street / Track

• 245/40R18

• 255/35R18

Popular Tyre Options

• Continental MaxContact MC7

• Michelin Pilot Sport 5

• Yokohama Advan AD09

• Nankang NS-2R (track)

Common Aftermarket Wheel Fitment

For customers upgrading RX-8:

• 18x8.5 +35 to +45 (perfect street setup)

• 18x9.5 +38 (aggressive fitment)

• 19x8.5 +40 (OEM+ look)

Why Proper Fitment Matters

Incorrect specs can cause:

• Steering vibration

• Uneven tyre wear

• Wheel bearing damage

• Safety risks

Our team ensures:

• Correct load rating

• Proper offset

• Hub-centric fitment

Why Choose AUTOSPORT TYREWORLD Adelaide

We specialise in:

• Performance tyre fitting

• Rotary and JDM vehicle setups

• Precision wheel alignment

• Track and street fitment advice

Our Locations

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