2011 Toyota Prius Owners Manual - Page 605

6-1. Specifications Tire size n Typical tire size information The illustration indicates typical tire size. Tire use (P = Passenger car, T = Temporary use) Section width (millimeters) ITO61P106 Aspect ratio (tire height to section width) Tire construction code (R = Radial, D = Diagonal) Wheel diameter (inches) Load index (2 or 3 digits) Speed symbol (alphabet with one letter) 584 PRIUS_U (OM47685U) DVD