When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Originally posted by KevinGS I think I got it, Rom...the formula that is. But why did you divide by 25.4?
no problem guys, anything to help, it's all about information
1 inch = 25.4mm. 245 or 275, that's mm, not inch. so after you do the math to get the sidewall, you need to divide it by 25.4 to get the value in inches