Section 1512.11 - Requirements for wheels(a)Spokes. There shall be no missing spokes.(b)Alignment. The wheel assembly shall be aligned such that no less than 1.6 mm (1/16 in.) clearance exists between the tire and fork or any frame member when the wheel is rotated to any position.(c)Rims. Rims shall retain the spokes and tire when side-loaded with 2000 N (450 lbf) and tested in accordance with the rim test, § 1512.18(j) . Sidewalk bicycles need not meet this requirement.