Rim base means the portion of a rim remaining after removal of all split or continuous rim flanges, side rings, and locking rings that can be detached from the rim.
Rim size designation means rim diameter and width.
Rim diameter means nominal diameter of the bead seat.
Rim width means nominal distance between rim flanges.
Rim type designation means the industry or manufacturer's designation for a rim by style or code.
Weather side means the surface area of the rim not covered by the inflated tire.
"September 4, 1976" may be expressed numerically as:
90476, 904, or 76
76 904
"September 1976" may be expressed as:
976, 9, or 76
76 9
TRUCK EXAMPLE-SUITABLE TIRE-RIM CHOICE
GVWR: 7,840 KG (17,289 LB)
GAWR: FRONT-2,850 KG (6,280 LB) WITH 7.50-20(D) TIRES, 20 * 6.00 RIMS AT 520 KPA (75 PSI) COLD SINGLE
GAWR: REAR-4,990 KG (11,000 LB) WITH 7.50-20(D) TIRES, 20 * 6.00 RIMS, AT 450 KPA (65 PSI) COLD DUAL
GVWR: 13,280 KG (29,279 LB)
GAWR: FRONT-4,826 KG (10,640 LB) WITH 10.00-20(F) TIRES, 20 * 7.50 RIMS, AT 620 KPA (90 PSI) COLD SINGLE
GAWR: REAR-8,454 KG (18,639 LB) WITH 10.00-20(F) TIRES, 20 * 2.70 RIMS, AT 550 KPA (80 PSI) COLD DUAL
S5.3.3 The non-pneumatic tire identification code, with which that assembly is labeled pursuant to S4.3(a) of § 571.129 .
49 C.F.R. §571.120
Authority: Secs. 102, 119, and 202, Pub. L. 89-563, 80 Stat. 718 ( 15 U.S.C. 1392, 1407, and 1422 ); delegation of authority at 49 CFR 1.50
For FEDERAL REGISTER citations affecting § 571.120, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.