Federal Register - August 31, 2021
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Source: Federal Register
48545
Federal Register / Vol. 86, No. 166 / Tuesday, August 31, 2021 / Rules and Regulations TABLE IIIENDURANCE TEST SCHEDULE
Test wheel speed Description
Load range km/h
Speed-restricted service:
90 km/h 55 mph
80 km/h 50 mph
56 km/h 35 mph
Motorcycle
All other
a b
All
C, D
E, F, G, H, J, L, M, N
All
All
A, B, C, D
E
F
G
H, J, L, M, N
r/m
40
48
32
24
80
80
64
64
56
48
Step I
7 hours 125
150
100
75
250
250
200
200
175
150
Step II
16 hours
66
75
66
66
a100
a75
70
66
66
66
Step III
24 hours
84
97
84
84
b108
b97
88
84
84
84
Total test revolution thousands
101
114
101
101
117
114
106
101
101
101
352.5
423.0
282.0
211.5
510.0
510.0
564.0
564.0
493.5
423.0
4 hours for tire sizes subject to high speed requirements S6.3.
6 hours for tire sizes subject to high speed requirements S6.3.
5. Amend 571.139 by:
a. Revising paragraph S2;
b. Revising paragraph S4.1.1a;
c. Revising paragraph S6.2.1.1.1;
d. Revising paragraph S6.3.1.1.1; and e. Revising paragraph S6.4.1.1.1.
The revisions read as follows:
571.139 Standard No. 139; New pneumatic radial tires for light vehicles.
khammond on DSKJM1Z7X2PROD with RULES
Test load: Percent of maximum load rating
S2 Application. This standard applies to new pneumatic radial tires for use on motor vehicles other than motorcycles and low speed vehicles that have a gross vehicle weight rating GVWR of 10,000 pounds or less and that were manufactured after 1975. This standard does not apply to special tires ST for trailers in highway service, tires for use on farm implements FI in agricultural service with intermittent highway use, tires with rim diameters of 12 inches and below, T-type temporary use spare tires with radial construction, and light truck tires with a tread depth of 18/32 inch or greater.
S4.1.1
a Listed by manufacturer name or brand name in a document furnished to dealers of the manufacturers tires, to any person upon request, and in duplicate to the Docket Section No.
NHTSA20090117, National Highway Traffic Safety Administration, West Building, 1200 New Jersey Ave. SE, Washington, DC 20590; or
S6.2.1.1.1 Mount the tire on a test rim and inflate it to the pressure specified for the tire in the following table:
VerDate Sep<11>2014
22:46 Aug 30, 2021
Jkt 253001
Test pressure kPa
Tire application Passenger car tires:
Standard load
Extra load
Light truck tires with a nominal cross section 295 mm 11.5
inches:
Load Range C
Load Range D
Load Range E
Light truck tires with a nominal cross section >295 mm 11.5
inches Load Range C
Load Range D
Load Range E
320
410
500
230
320
410
S6.3.1.1.1 Mount the tire on a test rim and inflate it to the pressure specified for the tire in the following table:
Test pressure kPa
Passenger car tires:
Standard load
Extra load
Light truck tires with a nominal cross section 295 mm 11.5
inches Load Range C
Load Range D
Load Range E
Light truck tires with a nominal cross section >295 mm 11.5
inches Load Range C
Load Range D
Load Range E
Frm 00063
Fmt 4700
Sfmt 4700
Passenger car tires.
Standard load
Extra load
Light truck tires with a nominal cross section 295 mm 11.5
inches Load Range C
Load Range D
Load Range E
Light truck tires with a nominal cross section >295 mm 11.5
inches Load Range C
Load Range D
Load Range E
140
160
200
260
320
150
200
260
Issued in Washington, DC, under authority delegated in 49 CFR 1.95 and 501.5.
Steven S. Cliff, Acting Administrator.
FR Doc. 202118633 Filed 83021; 8:45 am BILLING CODE 491059P
180
220
DEPARTMENT OF THE INTERIOR
260
340
410
Fish and Wildlife Service 50 CFR Part 17
Docket No. FWSR2ES20180104;
FF09E21000 FXES11110900000 212
190
260
340
S6.4.1.1.1 This test is conducted following completion of the tire endurance test using the same tire and rim assembly tested in accordance with
PO 00000
Test pressure kPa
Tire application
220
260
Tire application
S6.3 with the tire deflated to the following appropriate pressure:
RIN 1018BD35
Endangered and Threatened Wildlife and Plants; Threatened Species Status for Bartrams Stonecrop With a Section 4d Rule AGENCY:
Fish and Wildlife Service,
Interior.
E:FRFM31AUR1.SGM
31AUR1
