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.
The difference between 0-40 and 5-40 is negligible. Both have way too many friction modifiers. I try to stick to 5-30, or 10-40. My Mustang takes 0-20.