§571.109. Standard No. 109; New pneumatic tires for vehicles manufactured from 1949 to 1975, bias ply tires, and T-type spare tires. — Inbound Citations

(b) Its maximum permissible inflation pressure shall be either 32, 36, 40, or 60 psi, or 240, 280, 300, 340, or 350 kPa.

(1) Passenger cars may be equipped with pneumatic T-type temporary spare tire assemblies that meet the requirements of § 571.109 or non-pneumatic spare tire assemblies that meet the requirements of § 571.129 and S6 and S8 of this standard. Passenger cars equipped with a non-pneumatic spare tire assembly shall also meet the requirements of S4.3(e), S5, and S7 of this standard.

S1. Scope. This standard specifies performance, labeling, and certification requirements for retreaded pneumatic passenger car tires.

S1. Scope. This standard specifies tire and rim selection requirements, rim marking requirements and motor home/recreation vehicle trailer load carrying capacity information.

(b) Contained in publications, current at the date of manufacture of the tire or any later date, of at least one of the following organizations:

(6) S4.1.2 A listing compiled in accordance with paragraph (a) of S4.1.1 need not include dimensional specifications or a diagram of a rim whose dimensional specifications and diagram are contained in a listing published in accordance with paragraph (b) of S4.1.1.

S4.2. Information contained in a publication specified in S4.1.1(b) that lists general categories of tires and rims by size designation, type of construction, and/or intended use, is considered to be manufacturer's information required by S4.1 for the listed tires, unless the publication itself or specific information provided according to S4.1(a) indicates otherwise.

S5. General requirements

S5.1. Size and construction. Each tire shall fit each rim specified for its size designation in accordance with S4.1.

S5.2. Performance requirements. Each tire shall conform to each of the following:

(iii) Each tire shall be graded for temperature resistance performance with the word “TEMPERATURE” followed by the letter A, B, or C, based on its performance when the tire is tested in accordance with the procedures specified in paragraph (g) of this section. A tire shall be considered to have successfully completed a test stage in accordance with this paragraph if, at the end of the test stage, it exhibits no visual evidence of tread, sidewall, ply, cord, innerliner, or bead separation, chunking, broken cords, cracking or open splices as defined in § 571.109 of this chapter, and the tire pressure is not less than the pressure specified in paragraph (g)(1) of this section.

(A) The tire shall be graded C if it fails to complete the 500 rpm test stage specified in paragraph (g)(9) of this section.

(B) The tire may be graded B only if it successfully completes the 500 rpm test stage specified in paragraph (g)(9) of this section.

(C) The tire may be graded A only if it successfully completes the 575 rpm test stage specified in paragraph (g)(9) of this section.