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.
What is the correct multiplier for a tires revs per mile to get a constant. One post said 15" is .0135 and 16" is .015 and I have seen all are .0135. I have 16" with a revs per mile of 660. These are smaller dia. than my old set, I know how to recal. the speedo but I am getting mixed up with the multiplier. Thanks for any help with this.