Motorcycle Glossary

Tyre pressure

In Turkish: Lastik basıncı

In short

Tyre pressure is the air pressure inside the tyre, measured in bar or psi; it directly affects grip, braking distance, tyre life and fuel use.

The correct pressure is in the owner's manual and, on most models, on a label on the swingarm or chain guard; a higher rear value is given for a pillion or luggage. Always measure with cold tyres.

Too low: the tyre overheats, the bike wallows in corners and the tyre wears quickly.
Too high: the contact patch shrinks and grip drops.
1 bar = 14.5 psi = 100 kPa.

For general values by class and a bar–psi converter, see our tyre pressure guide.