I am glad a few of you mentioned the importance of carrying a bit more pressure (5 to 15 PSI) in the rear tire than the front. I run nominal 28mm (physically more like 26mm) Contis on the Bianchi, typically around 90 front / 100 rear. I run about 85 front / 90 rear in Capo #1's 28mm (again, more like 26mm) Vittorias, which are rated at 85PSI, and cannot say I notice any performance difference in the tires. I go even lower, about 75 front, 80 rear, on the Peugeot's non-hooked rims, to avoid a blowout. When I ride the mountain bike on the street, I put 70 PSI in the rear tire, which is rated at 65 PSI.