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.
EDIT: I was just looking at the FAQ sticky and they say 10mm in the front and 8mm in the back, but I used 8mm in the front when I took off my rotors. The Chilton manual says 8mm as well.