Originally Posted by
PeteDman
Today I used the recommended psi and I was just as fast but with the added benefit of extra smoothness. This is something I'm always seeking because I ride an aluminum frame. I thought the 70psi on the front was going to be too low but it actually feels right. I've found my new tire pressures (R-105 & F-70), for now.
105 rear sounds about right, but you will probably want higher in front (~80). The low front works fine for normal riding, but under hard braking, the weight shifts to something like 70/30, and the front tire will wallow and squirm. So its a trade-off between normal comfort, and handling under braking.