2006 Infiniti G35 Owner's Manual - Page 300

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. 7. H: Tire speed rating. You should not drive the vehicle faster than the tire speed rating. Example SDI1607 4. Three-digit code: Tire type code (Optional) 5. Three-digit code: Date of Manufacture 6. Four numbers represent the week and year the tire was built. For example, the numbers 3103 mean the 31st week of 2003. If these numbers are missing, then look on the other sidewall of the tire. 3 k Tire ply composition and material 2 k TIN (Tire Identification Number) for a new tire (example: DOT XX XX XXX XXXX) 1. DOT: Abbreviation for the "Department of Transportation". The symbol can be placed above, below or to the left or right of the Tire Identification Number. 2. Two-digit code: Manufacturer's identification mark 3. Two-digit code: Tire size 8-42 Maintenance and do-it-yourself The number of layers or plies of rubber-coated fabric in the tire. Tire manufacturers also must indicate the materials in the tire, which include steel, nylon, polyester, and others. sure This number is the greatest amount of air pressure that should be put in the tire. Do not exceed the maximum permissible inflation pressure. 4 k Maximum permissible inflation pres-