Your Complete Guide to Upsizing Tyres

Upsizing usually means wider tyres, lower profile, or larger diameter wheels while trying to keep overall rolling diameter close to original so speedometer and gearing stay sane.

Why people upsize

Aesthetics, sharper turn-in, and more rubber choices on popular rim sizes. Trade-offs include harsher ride, more road noise, and potential clearance issues.

Check clearance and law

Full lock-to-lock steering and suspension compression must clear guards and struts. Some insurers and states scrutinise large deviations from placard sizes.

Use a calculator

Compare overall diameter and revolutions per kilometre. Aim for minimal change unless you recalibrate speed sensors.