the tires came from this lego set
http://www.lego.com/eng/racers/products.asp?id=8384
i dont really plan to keep them there but its sometimes fun to run it like this. im getting an overland in the mail soon so ill use that for the off road stuff and stick some different tires on the xmod,, i just wanted to see how they would fit/ look/. work all and all, im happy with it