How To Read Your Tire Size
The first letter(s) indicate if it is a passenger tire (as indicated by ‘P’ or a Light truck tire (as indicated by LT).
The next numbers are the section width, which refers to the width of the tire tread. In the examples above (P225/60R16 and LT235/75R15), the section widths are 225mm and 235mm.
The next numbers are the aspect ratio, which is the percentage of the sidewall height as it refers to the section width and is expressed like a percentage. In the examples above (P225/60R16 and LT235/75R15), the sidewall heights are 135mm (60% of 225mm) and 176.25 (75% of 235mm).
The last number is the diameter of the rim, in inches. Using the examples above, the rim size is 16 inches and 15 inches.
If you have any questions about reading your tires, visit a Driver’s Edge tire shop near you or give us a call and we’ll help you find the right size for your next set of tires.
