Race Car Wheels and Axles

a.) All cars must have four (4) wheels. All four wheels must be installed in the provided axle slots. The car shall roll on all four (4) of the wheels from the official kit.
b.) All four wheels MUST be in contact with a flat surface when the car is placed on it.
c.) The wheels shall turn about the axle nails from the official kit. It must be obvious to the judges that the precut grooves in the wooden block, wheels, and the nails from the kit are being used. No “After Market” wheels or axles are allowed.
d.) Only official BSA wheels and axles may be used as replacements.
e.) The wheel base (distance between the axles) must not be changed from the standard locations of the official car kit.
f.) Hubcaps/wheel covers are not allowed.
g.) The axle nails shall be firmly affixed to the wood of the car body, and MUST be placed in the original 'axle grooves' in the supplied wooden block.
h.) The axles provided may be altered only in the manner as to remove the metal mold imperfections near the nail head. The axles may be polished and lubricated.
i.) Axles may not be angled in the car body slots in a manner that would cause the wheel not to run flat to the surface of the track.
j.) The axles head and shaft diameter may not be modified or reduced.
k.) THE SHAPE AND FORM OF THE WHEELS CANNOT BE MODIFIED OR RESHAPED, however wheels may be sanded to remove molding burrs. Wheels may not be tapered or rounded.
l.) Wheel treatment (hub and tread smoothing and polishing) may not result in substantial removal of mass nor in reducing the wheel width from the original kit wheels.
m.) Regarding wheel smoothing, the inside and outside of the wheel and hub may not be altered or modified in anyway (ie, no material removed from the inside of the wheel) with the exception of the removal of the burrs and molding marks on the outside of the tread. The wheels may not be cut, drilled, beveled, tapered, thin sanded, wafered, lathe turned or rounded.
n.) Some of the original "tread marks" on the wheel face must remain intact, i.e. apparent to the inspector. The lettering “Official BSA” on the inside/outside of the wheel must be clearly visible.
o.) It must be obvious to the inspection committee members that the axle grooves, wheels and the axles provided in the kit are being used.