Northman try this site - http://www.camowraps.com/
The front tire is a ITP Mudlight 27x10x12, the front rim is a ITP Billet Magnum which is not made anymore! Got it off of ebay for $25
The rear tire are Highlifter Outlaws 26x12x12, rear rims are also made by highlifter. Check em out here - http://highlifter.com/