u/Bfinalbandit

Hi, i just started in junior rotax from rental karting, I need some help with tyre pressure. I've done testing at rye house, whilton mill, bayford meadows, and shenington. I usually set my tyre pressure between 8-10 psi cold as per the manufacturers recommendation but they still overheat half way through the sessions, whilton and bayford being the worst. Does anyone go below the manufacturer's guide and is it safe to do so?