Are the tires all the same diameter? I know when I switch tires around, sometimes I get a little "stagger" un-intentionally with used tires. That can make a car un-stable too...In colder weather, I use soft compound rubber tires, w/ med. firmness inserts. I drive on concrete, what are you running on? I can't get traction on the cement w/ foams, (not very much anyway) even w/ 35 shores, it slides all over the place...I have an R.P.M. (company) camber gage to check my camber settings. Check your toe in/out front and rear, and the ride height, and "droop"...If you don't know what all those are, we'll explain 'em if ya want, no prob...I have an O.S. .15 CV-RX in my Tornado (Hot Bodies) and it makes the car MUCH more fun to drive. I don't think it's too much for the chassis, not at all...I've got a Schumacher Fusion w/ a .21 in it, and it's awesome!
