How To Read Tire Sizes
The first letter(s) indicate if it is a passenger tire (as indicated by ‘P’ or a Light truck tire (as indicated by LT). When determining the proper size for your vehicle, don’t leave this off – it’s important!
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, respectively.
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), respectively.
Finally, the last number is the diameter of the rim, in inches. So again, using our examples above, the rim size is 16 inches and 15 inches, respectively.
If you have any questions about reading your tire, contact Ramona Tire today.