GROWING TIRES
The new Indy Grips and other tires grow in diameter at high RPMs with some of the new super fast motors and can rub the chassis and/or body. Part of the chassis can be cut away to fix this, but only cut away what is necessary. The wheel arches can be enlarged or you can change the tire and wheel so they do not rub. To enlarge the arches draw the new arch on the body work, put the largest fine grit sanding disk on your Dremel tool, and grind out the new arch slowly.