tire size numbers: what do they mean? [Archive] - CustomTacos.com Forum

tire size numbers: what do they mean?

TacoTaco
11-08-2003, 03:11 PM
ok i feel stupid sayin this but what do the numbers in the tire description really mean. Like235/45r17. my understanding is of course the rim is a 17 the height is the 45 above the rim and the width is the 235. Am i an idiot http://www.CustomTacos.com/ubbthreads/images/graemlins/shrug.gif

TRD4UNME
11-08-2003, 03:23 PM
not completly the first number is the width of the tire in millimeters [245] the middle number is the height of the sidewall of the tire. I BELIEVE the middle number is the percent of the width of the tire that is the sidewall. So if your width is 245 and ur sidewall is 45? then the sidewall is 45 percent of the width[245]

and the last number is the diameter[size] of the tire.

its confusing so maybe someone else can make it clearer http://www.CustomTacos.com/ubbthreads/images/graemlins/shrug.gif

Vracer111
11-08-2003, 04:56 PM
The following link should help - http://www.tirerack.com/tires/tiretech/general/size.htm

TacoTaco
11-09-2003, 12:58 PM
cool yeah that site helped even tho i had to read it like three times

lowandloud
11-10-2003, 10:00 AM
not completly the first number is the width of the tire in millimeters [245] the middle number is the height of the sidewall of the tire. I BELIEVE the middle number is the percent of the width of the tire that is the sidewall. So if your width is 245 and ur sidewall is 45? then the sidewall is 45 percent of the width[245]

and the last number is the diameter[size] of the tire.

its confusing so maybe someone else can make it clearer http://www.CustomTacos.com/ubbthreads/images/graemlins/shrug.gif




yep, nail on the head