What do those numbers REALLY mean on the side of your tire? How do you find YOUR ideal tire pressure? In this video we explore the incredibly important and nuanced world of tire pressure. I enlist the help of Silca owner and president Josh Poertner, who has also helped the likes of Peter Sagan and Fabian Cancellera dial in their tire pressures in the worlds most important races. What can we learn from them? Find out!