393.209—Steering wheel systems.

Steering wheel diameter Manual steering system Power steering system
406 mm or less (16 inches or less) 51 mm (2 inches) 108 mm (41/4 inches).
457 mm (18 inches) 57 mm (21/4 inches) 121 mm (43/4 inches).
483 mm (19 inches) 60 mm (23/8 inches) 127 mm (5 inches).
508 mm (20 inches) 64 mm (21/2 inches) 133 mm (51/4 inches).
533 mm (21 inches) 67 mm (25/8 inches) 140 mm (51/2 inches).
559 mm (22 inches) 70 mm (23/4 inches) 146 mm (53/4 inches).
[53 FR 49402, Dec. 7, 1988, as amended at 70 FR 48055, Aug. 15, 2005]