Section 300.67. Tires.

 

(1)  The front tires shall have tread depth of at least 4/32-inch and rear tires shall have tread depth of at least 2/32-inch around the entire periphery measured at 2 points no less than 15 inches apart in any major tread groove.

(2)  A school bus may not be operated with regrooved, recapped, or retreaded tires on the front wheels.

(3)  A school bus may not be operated with cuts or chunks missing exposing the cord, recaps peeled loose or off, or showing an indication of ply separation.

(4)  Tires of different size or ply rating may be used except that all tires on an axle must be the same size and type. Bias and radial tires may not be mixed.

(5)  All tires shall be maintained to meet the manufacturer's GAWR and GVWR.

Cr. Register, February, 1983, No. 326 , eff. 3-1-83; am. (4), Register, February, 1995, No. 470 , eff. 3-1-95; am. (2) and (3), Register, December, 1997, No. 504 , eff. 1-1-98.