Body, Wheels, Axels
1. Axles and wheels shall be only as provided in the Official Grand Prix Pinewood Derby Kit.
        Wheels must have the "BSA" marking on them to participate.

2. You MUST use the block of wood provided. Purchasing pre-made bodies is NOT ALLOWED.
3. Wheels may be lightly sanded to smooth out molding imperfections on the tread area. This light sanding is the only modification allowed. Beveling, tapering, thin sanding, wafering or lathe turning of the wheels is prohibited. 
4. Axles may not be altered in any way except for polishing.
    No bending of the axles is permitted.
    All Wheel MUST touch the track.
5. Wheel bearings, washers, bushings, and hub caps are prohibited.
6. The car shall not ride on any type of springs.
7. The car must be free-wheeling, with no starting device or other type of propulsion.

8. Due to the track, the body of the car where the axle is located can't be narrowed or widened beyond 1/8".  This is due to the track and prevents the car from being run.   Too wide and it bumps into other cars and too narrow it won't fit in the groove.

9.  the front of the car must have a leading solid surface.   There is a "starter" pin on the track.   The leading surface of the car must sit on the starter pin.