I think it should be noted that alot of the set-ups I've seen on this thread have two different kinds of tires used. It should be pointed out on these set-ups that this is not legal for a TCS race. I know a lot of drivers will say they don't go to a TCS race. But there are those that do. And if a new driver sets up his car the way some of the set-ups here are, and he gets used to the way it handles, he'll go to a TCS race to find out that he now has to buy new tires for either the front or the rear, and chances are really good that the handling is going to be way off. Whether you stuff the tire with inserts or not is okay, but the compounds and type of tire are supposed to be the same on all four corners of the cars. And yes, they are supposed to be Tamiya tires and rims.