take the tyres of the front and back, and in the rims make little teath about 1 inch apart. Then go to ur hardware store and get some metal sheats weld them together, and make them about 4m long. put ur car up on a hoist and then put the metal sheats round both the from and the back rims, and there you go, tank tread, you can now go off road, and you have enough grip for anything.