1Nominal section width, expressed in metric, inch or alpha.
2Ratio between tire section height and nominal section width. This ratio is not indicated when section width is expressed in inches (eg. 3.50-18).
3Code for tire construction (- = Bias, R = Radial, B = Bias Belted).
4Nominal rim diameter size in inches.
5"Motorcycle" in abbreviated form. Differentiates motorcycle tires and rims from those designed for other vehicles. Not shown on all models.
6Expresses the tire's maximum load capacity (pounds) at the pressure indicated (psi).
7Speed symbol. Indicates the tire's speed.
8Tubeless (TL) or tubetype (TT), as applicable.
9The arrows indicated the direction of rotation of the tire according to the fitting position (front-rear); applicable for directional tires only.
10Number of plies and material.
11Abbreviation of "US Department of Transportation." Serves to indicate that the tire conforms to the regulations issued by the US Department of Transportation. Includes the serial # for the tire, and the last 3 or 4 numbers represent the date. Example 3805 means the tire was produced in the 38thweek of 2005.
