How to Find Your Tyre Size
Finding the correct tyre size for your vehicle is crucial for safety, performance, and legal compliance on Australian roads. Your tyre size affects everything from fuel efficiency to handling, so getting it right matters.
Where to Find Your Tyre Size
Check Your Current Tyres
The easiest way to find your tyre size is to look at the sidewall of your existing tyres. You'll find a series of numbers and letters that might look something like: 225/60R16 98H
Important: Make sure your current tyres are the correct size for your vehicle before using them as reference. Previous owners may have fitted incorrect sizes.
Check Your Vehicle Placard
Every vehicle sold in Australia has a tyre placard showing the manufacturer's recommended tyre sizes. You'll typically find this inside the driver's side door frame
- In the glove compartment
- In the driver’s side door
- Inside the fuel cap
- Under the bonnet
The placard shows recommended sizes for different load conditions and may list multiple size options.
Owner's Manual
Your vehicle's owner's manual contains detailed information about recommended tyre sizes, including seasonal variations and load-specific requirements.
Understanding Tyre Size Numbers
Let's break down a typical tyre size: 225/60R16 98H
Width (225)
- The first number represents the tyre width in millimetres
- In this example, the tyre is 225mm wide from sidewall to sidewall
Aspect Ratio (60)
- The number after the slash shows the sidewall height as a percentage of the width
- Here, the sidewall height is 60% of 225mm (135mm)
Construction Type (R)
- R = Radial construction (standard for modern tyres)
Rim Diameter (16)
- This number indicates the wheel rim diameter in inches
- Must match your wheel size exactly
Load Index (98)
- Shows the maximum weight each tyre can safely carry
- Critical for legal compliance and safety
Speed Rating (H)
- Indicates the maximum safe speed for the tyre
- Must meet or exceed your vehicle's maximum speed capability
When You Might Need Different Sizes
Plus Sizing
You can often fit larger wheels with lower-profile tyres while maintaining the same overall diameter. This can improve:
- Handling and cornering
- Braking performance
- Appearance
Important: Always consult a tyre professional to ensure compatibility and maintain speedometer accuracy.
Need Help?
If you're unsure about your tyre size or need advice on the best tyres for your driving conditions, our experienced team is here to help. We understand local requirements and can ensure you get the right tyres for safety, performance, and legal compliance.
Remember: Correct tyre sizing isn't just about fit - it's about safety, legality, and optimal vehicle performance.