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Missouri Tire Regulations

Studded tires, prohibited when--penalty.

307.171. 1.

No person shall operate any motor vehicle upon any road or highway of this state between the first day of April and the first day of November while the motor vehicle is equipped with tires containing metal or carbide studs. Any person violating the provisions of this section is guilty of an infraction.

Inspect all tires except the spare tire for tread wear, knots, cuts, separations, mismatching of tire types and for tire markings such as “reject” or “for non-highway use.” Reject vehicle if:  A tire is worn at any location other than the wear indicator to the point where there is no tread configuration  There is a localized worn spot that exposes the cord  Tire has any cut or separation that exposes the cord when the tire is inflated or if the tire has any knots  A vehicle has a radial and a non-radial tire on the same axle  A tire is marked reject, rejected, not for highway use, farm use only, for nonhighway use, for race track use only, or marked with similar terms, or if determined beyond a reasonable doubt that these markings have been removed. This does not include tires labeled with the word blemish  The tire size of any dual is mismatched by more than one-half inch (1/2") in height.

Wheels (11 CSR 50-2.250)

Inspect all wheels except the spare tire wheel for damage and the condition of any visible wheel bolts, nuts or lugs, or mismatching of hub assembly. Hub caps need not be removed to inspect wheel bolts, nuts or lugs except on the wheel which is removed for brake inspection. Reject vehicle if:  There are loose, missing or damaged wheel studs, bolts, nuts or lugs  Rims and lock rings on the wheel of a commercial vehicle are mismatched  Rims or lock rings are bent, sprung, cracked or otherwise damaged  Stud holes are out-of-round  There are cracks between the hand holes or stud holes of a disc wheel A casting is cracked or there is evidence of wear in the clamping area of a cast wheel  A wheel and hub assembly are mismatched or if the lug holes and lug bolts are mismatched, which prohibits the tightening and proper seating of the lug nuts, or the hub flange fails to make full contact with the wheel pad.

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