CHAPTER I: DEPARTMENT OF TRANSPORTATION
SUBCHAPTER e: TRAFFIC SAFETY (EXCEPT HAZARDOUS MATERIALS)
PART 428 UNSAFE OPERATING CONDITIONS OF PASSENGER CAR TIRES
SECTION 428.30 TIRE MOUNTED ON VEHICLE OFFERED FOR SALE OR FOR LEASE
Section 428.30 Tire Mounted on Vehicle Offered for Sale or For Lease
Under the provisions of (d)5 in Section 12-405 of the Illinois Vehicle Code, a tire mounted on a vehicle being offered for sale or for lease may not exhibit a tread groove depth, or depth of tread, less than 3/32 of an inch.
a) Such a tire is in violation of this provision when any tread wear indicator is less than 1/32 of an inch below the tread outer surface.
b) Such a tire is in violation of this provision when a tread groove measures less than 3/32 of an inch in depth at any location
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c) The rules stated in Section 428.30(a) and (b), above, apply only while the vehicle is being offered for sale or for lease. The rules given in Section 428.20, above, also apply during such offer and at other times.