Which tire is taller, a 65 or 70?
These numbers show the aspect ratio, which is the tire sidewall height in percentage to width of the tire. The width of Sidewall is directly proportional to the aspect ratio, a 70 aspect ratio means the sidewall height is 70% of 265mm while 65 aspect ratio means it is 65% of 265mm. This is also known as the aspect ratio. The lower the number, the more ‘low-profile’ the tyre.The 215 means 215 mm wide. The 65 is a percentage meaning 65% of the 215 mm width.