2011 Acura RL Owner's Manual - Page 536

Tire Labeling The tires that came on your vehicle have a number of markings. Those you should be aware of are described below. TIRE LABELING EXAMPLE (1) Tire Size 96 Whenever tires are replaced, they should be replaced with tires of the same size. Following is an example of tire size with an explanation of what each component means. P245/45R18 96V Load index (a numerical code associated with the maximum load the tire can carry). Speed symbol (an alphabetical code indicating the maximum speed rating). V Tire Identification Number (TIN) P 245 45 Vehicle type (P indicates passenger vehicle). Tire width in millimeters. Aspect ratio (the tire's section height as a percentage of its width). The tire identification number (TIN) is a group of numbers and letters that look like the following example. TIN is located on the sidewall of the tire. DOT B97R FW6X 2202 DOT This indicates that the tire meets all requirements of the U.S. Department of Transportation. Manufacturer's identification mark. (1) R 18 Tire construction code (R indicates radial). Rim diameter in inches. B97R (4) (3) (2) (1) Tire Size (2) Tire Identification Number (TIN) (3) Maximum Tire Pressure (4) Maximum Tire Load 530