What does 10-15 mean?
Tire sizes are easy to understand once you learn how to read them. On this page you'll find a color-coded explanation of the 10-15 tire code.
This number indicates that your tire has a width of 10- millimeters.
This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
The tire size was designed to fit rims or wheels that are 10 inches in diameter.
The mark of 1 denotes your tire's load range, or ply rating. A load range of 1 means that the tire has a ply rating of undefined. Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures. Tires with higher inflation pressures can carry heavier loads.