Convert ST tires to LT tires
Hi everyone How do you convert ST tires size to LT tires size? For example 235/80R/16 load range E to a light truck tire size.
Forum Discussion
Red wing wrote:
Hi everyone
How do you convert ST tires size to LT tires size? For example 235/80R/16 load range E to a light truck tire size.
The 235 number is the width in millimeters. There are 25.4mm per inch, so 235mm*(1in/25.4mm) = 9.25"
The 80 number is the aspect ratio (sidewall height/width) which represents 0.8 ratio. So 235mm*0.8 = 188mm.
Converting the 188mm height to inches 188mm*(1"/25.4mm) = 7.4".
Since the side wall height has a top and bottom, the overall sidewall height is 14.8".
A 16" wheel + 14.8" of sidewall height means the tire is 30.8" tall unloaded.
So, the LT could be a 31" x 9" x 16" tire, or rounded some other way...
