Look up factory front and rear tyre sizes for vintage motocross, enduro and trail bikes in the VMXOwners.au archive.
Select a brand and bike below to view the recorded factory tyre sizes. This guide is useful when restoring, maintaining or choosing replacement tyres for classic off-road motorcycles.
Select a brand and bike to show tyre sizes.
Older motocross and enduro motorcycles often used imperial tyre sizes such as 3.00-21, 4.00-18, 4.50-18 and 5.10-18. Modern replacement tyres are often listed in metric sizes, so always check rim size, tyre width, clearance and intended riding use before buying.
| Area | What To Check |
|---|---|
| Front Tyre | Common vintage front sizes include 2.75-21 and 3.00-21. |
| Rear Tyre | Common vintage rear sizes include 4.00-18, 4.50-18, 4.60-18 and 5.10-18. |
| Rim Size | Always confirm whether your bike uses 17, 18, 19 or 21 inch rims. |
| Clearance | Check swingarm, chain, mudguard and fork clearance before fitting wider tyres. |
Browse the VMXOwners.au archive for vintage motorcycle specifications, workshop data, carburettor settings, suspension information and model history.
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