hello, who ever said to run 8-10 psi in there tyres must either wiegh 2 stone or are smooth as a babys ass, just went out on a little ride and got a snake bite (again) 3rd time this week no bother keep the relpys coming each one is giving me a rough estimate by the way your bike is THE SEX i wish that i could afford some thing like that give me a shout if you decide to sell in the neer future