Halfords have some great info on tyre pressures 😀
1. Work out the right tyre pressure for your bike
This depends on where and how you’re riding, as well as your weight. We’ve given some general guidelines below, but each tyre should have recommended pressures stamped on the sidewall. Also remember if you’re going really high that your rims will have a maximum recommended pressure too.
rear mountain bike tyres should be at 45 pounds per square inch (PSI).
front mountain bike tyres should be at 35 PSI. 😯
road bike tyres vary a lot and could need as much as 130 PSI, but 100-110 is not unusual for 23mm tyres. Ask one of our experts in your local Halfords for some advice on the best pressure for your bike.