Pilot powers what pressures u running On my S4r running 120/70 17 and 180/55 17. and 32 psi front and 36 psi rear. I had a 180/55 17 on my hornet different brand and was running 42 psi in rear then. Michelin website recommndeds 2.1 bar and 2.3 bar, not sure what that is in psi! Are my pressures to soft? not sure where i got them from now! Cheers Lee |