OK I saw The XMODSTER at the XMODRC.com forums and saw he was lucky enough to have Monster tires where the inner rim fit almost perfectly on an xmod rim.

Well, we're all not that lucky so with some stuff i found under my bed and quick trip to my LHS I was able to make xmod monster Tires.
Supplies
1. Xmod rims or foam tire rims
2. Mini-T pre-glued Tires
3. 2 diferent lego wheals you'll see in the pics
4. SUPER GLUE
5. Drill or needle nos pliers and knife if the only thing you care about is if it works