49 C.F.R. 49 CFR--PART 571
Title 49 - Transportation
Effective Date(s): June 1, 2007, and delay the effective date of the Final Rule published on June 26, 2003 (68 FR 38115) from June 1, 2007 until September 1, 2007. 5. Section 571.120 is amended by revising S5.1.1 and S5.1.2 to read as follows: * * * * * S5.1.1 Except as specified in S5.1.3, each vehicle equipped with pneumatic tires for highway service shall be equipped with tires that meet the requirements of §571.109, §571.119 or §571.139, and rims that are listed by the manufacturer of the tires as suitable for use with those tires, in accordance with S4.4 of §571.109 or S5.1 of §571.119, as applicable, except that vehicles may be equipped with a non-pneumatic spare tire assembly that meets the requirements of §571.129, New non-pneumatic tires for passenger cars, and S8 of this standard. Vehicles equipped with such an assembly shall meet the requirements of S5.3.3, S7, and S9 of this standard. S5.1.2 Except in the case of a vehicle which has a speed attainable in 3.2 kilometers of 80 kilometers per hour or less, the sum of the maximum load ratings of the tires fitted to an axle shall be not less than the gross axle weight rating (GAWR) of the axle system as specified on the vehicle's certification label required by 49 CFR part 567. Except in the case of a vehicle which has a speed attainable in 2 miles of 50 mph or less, the sum of the maximum load ratings of the tires fitted to an axle shall be not less than the gross axle weight rating (GAWR) of the axle system as specified on the vehicle's certification label required by 49 CFR part 567. If the certification label shows more than one GAWR for the axle system, the sum shall be not less than the GAWR corresponding to the size designation of the tires fitted to the axle. If the size designation of the tires fitted to the axle does not appear on the certification label, the sum shall be not less than the lowest GAWR appearing on the label. When a passenger car tire is installed on a multipurpose passenger vehicle, truck, bus, or trailer, the tire's load rating shall be reduced by dividing by 1.10 before calculating the sum (i.e., the sum of the load ratings of the tires on each axle, when the tires' load carrying capacity at the recommended tire cold inflation pressure is reduced by dividing by 1.10, must be appropriate for the GAWR). * * * * *
Amendment from January 06, 2006
49 CFR--PART 571
Amendment(s) published January 6, 2006, in 71 FR 886
§ 571.120-- Standard No. 120—Tire selection and rims for motor vehicles with a GVWR of more than 4,536 kilograms (10,000 pounds).
