Originally Posted by å
17/225/40
i know the 17 is rim size
225 is the width
but what is the "40" in the tire code?
also what are the letters for?
more like 225/40/17 in most cases.
225 = width
40 = height (profile)
17 = size
T, H, V, Z, W, Y are all speed ratings. check out tirerack.com for more info.