CFR > Title 49 - Transportation > SUBTITLE B—Other Regulations Relating to Transportation > CHAPTER III—FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (Parts 300–399) > SUBCHAPTER B—FEDERAL MOTOR CARRIER SAFETY REGULATIONS (Parts 350–399) > PART 393—PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION > SUBPART J—Frames, Cab and Body Components, Wheels, Steering, and Suspension Systems (§393.201 to §393.209) > 393.205—Wheels.