Vittoria Randonneur City Tyre 2012

For normal road surface and dry conditions. Note rim specifications regarding max tire pressures allowed. For wet or rough roads, decrease by 0.5 bar (7.5 psi). For tubular tyres, increase by 0.5 bar (7.5 psi).

Ideal tyre pressure is subject to many variables such as road surface, weather conditions, bike materials and setup, rider’s weight and lastly, riding style. The best way to fine tune ideal tyre pressures is field testing a variety of different pressures. One method is to use a short criterium style circuit, preferrable with a variety of corners.

Start with the suggested pressure and ride a lap. Each following lap, lower the pressure by 5psi until you feel the tyres start to “wallow” or move a bit. This is your lowest pressure point. Return to the above table pressures and raise 5psi each lap until the tyres start to bounce and skip/move across the surface. This is your max pressure. Decrease by 5 psi from here until you feel you have the best pressure for the conditions.

Keep a tyre pressure log, including road surface, techinicality of the course, weather conditions, tyre type, brand, and TPI. Finally, the bike you used and your weight on that day. Over time, this log will become a valuable tool for referencing tyre pressures and road conditions in order to optimize your performance when on race day.