2006 Infiniti G35 Owner's Manual - Page 299

Coupe model Size P225/50R17 93V Cold Tire Inflation Pressure 210 kPa (30 psi) 240 kPa (35 psi) 240 kPa (35 psi) 210 kPa (30 psi) 240 kPa (35 psi) 240 kPa (35 psi) 420 kPa (60 psi) Front 225/45R18 91W Original Tire 225/40R19 89Y P235/50R17 95V Rear Original 245/45R18 96W Tire 245/40R19 94Y Spare Tire T145/80D17 TIRE LABELING Example SDI1575 1 k Tire size (example: P215/65R15 95H) Example SDI1951 Federal law requires tire manufacturers to place standardized information on the sidewall of all tires. This information identifies and describes the fundamental characteristics of the tire and also provides the tire identification number (TIN) for safety standard certification. The TIN can be used to identify the tire in case of a recall. 1. P: The "P" indicates the tire is designed for passenger vehicles. (Not all tires have this information). 2. Three-digit number (215): This number gives the width in millimeters of the tire from sidewall edge to sidewall edge. 3. Two-digit number (65): This number, known as the aspect ratio, gives the tire's ratio of height to width. Maintenance and do-it-yourself 8-41