Originally posted by James Nguyen
the foams make the car lighter, but i don't think it makes them that much lighter.
Foams will make the car about 2 or 3 ounces lighter......most foam races go with 50oz weight rule and rubber tire races are 53oz weight. Its fairly easy to get the car close to 50oz with foam tires and at most rubber tire races I have had to add a 1/4 oz or less weight to my car to bring it up to 53oz. But the chassis is very heavy and can be milled to save some weight like what Randman and others have done.