It should be stamped on the back of the rim...it's too cold for me here to take one off and look lol. I'm going to guess +55. If you look at trucks with the accessory TRD 18 wheel (...i believe this is installed on the XP trim y'all get down south)...anyways, that rim is +45, and it does look slightly a little more poked out compared to the stock factory 18 rim.