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1
Nominal section width, expressed in metric, inch or alpha.
See size chart below. - 2 Ratio between tire section height and nominal section width. This ratio is not indicated when section width is expressed in inches (eg. 3.50-18).
- 3 Code for tire construction (- = Bias, R = Radial, B = Bias Belted).
- 4 Nominal 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.
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6
Expresses the tire's maximum load capacity (pounds) at the pressure
indicated (psi).
See load index chart below. -
7
Speed symbol. Indicates the tire's speed.
See speed rating chart below. - 8 Tubeless (TL) or tubetype (TT), as applicable.
- 9 The arrows indicated the direction of rotation of the tire according to the fitting position (front-rear); applicable for directional tires only.
- 10 Number of plies and material.
- 11 Abbreviation 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 38th week of 2005.
- 12 Tread Wear Indicator, as applicable
- 13 Brand name and registered trademark.
- 14 Type of tread pattern and/or product line.
- 15 Indicates where the tire was produced.