Guys have had extensive use of the car on trackdays this year and have always left the tyre pressures at the standard psi. Thoughts. They are 225x45x17 on the car its a ppp myo4 sti

 

My tyres are the exact same size. I normally run 31psi all round. I was at Nurburgring last w/e and ran 38psi all round, which as my first guess I felt was spot on. I had no understeer (apart from two corners in the rain) and no oversteer at all. Tyre wear was virtually even and looks good. The GSD3's are excellent wet or dry.

Buck

 

Using Dunlop SP Sport race the ideal psi for the ring is 36 when hot.


Gary