2007 Nissan Sentra Owner's Manual - Page 271
2007 Nissan Sentra Manual
Page 271 highlights
7. H: Tire speed rating. You should not drive the vehicle faster than the tire speed rating. WDI0395 Example 1 Tire size (example: P215/65R15 95H) 4. R: The R stands for radial. 5. Two-digit number (15): This number is the wheel or rim diameter in inches. 6. Two- or three-digit number (95): This number is the tire's load index. It is a measurement of how much weight each tire can support. You may not find this information on all tires because it is not required by law. 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 8-35