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Tyre Sizing

Tyre Sizing

Understanding Tyre Sizing in Australia

Tyre sizes in Australia follow a standard format such as 205/65R15. Each part of this code tells you something important about the tyre:

IMPORTANT TO NOTE
  • 205 – the tyre’s width in millimetres
  • 65 – the aspect ratio (the height of the sidewall as a percentage of the width)
  • R – radial construction (the most common type)
  • 15 – the wheel diameter in inches


Together, these numbers ensure your tyre fits correctly and performs safely on your vehicle. Using the wrong size can affect handling, fuel economy, speedometer accuracy, and even your insurance.

If you’re thinking about changing your tyre or rim size — whether for looks, performance, or load capacity — contact us first. We’ll check what sizes are legal, safe, and suitable for your vehicle and help you choose the best option

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