what i do is with a dremel take the outside wall off of tire were it is square and run a bead of ca just on the outside tread of tire and then wipe of excess and the car dosent roll in the corners we also slam our cars as low to the carpet as possible without scubbing .and they work great also use oneway bearings and just drive into the corners and go also just using m all the way around with stok hard and blue inserts in front and stock hard foams in the rear