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Tire Service
LOAD_INDEX
A letter symbol that follows the load index indicates the tire's speed rating. The speed rating denotes the speed at which a tire is designed to be driven for extended periods of time under a standard condition of load and inflation pressure. The tires on your vehicle may operate at different conditions for load and inflation pressure. These speed ratings may need to be adjusted for the difference in conditions. The ratings range from 81 mph (130 km/h) to 186 mph (299 km/h). These ratings are listed in the following chart.
LEGAL_NOTELOAD_INDEX | Load (lbs) |
---|---|
75 | 852 |
76 | 882 |
77 | 908 |
78 | 937 |
79 | 963 |
80 | 992 |
81 | 1019 |
82 | 1047 |
83 | 1074 |
84 | 1102 |
85 | 1135 |
86 | 1168 |
87 | 1201 |
88 | 1235 |
89 | 1279 |
90 | 1323 |
91 | 1356 |
92 | 1389 |
93 | 1433 |
94 | 1477 |
95 | 1521 |
96 | 1565 |
97 | 1609 |
98 | 1653 |
99 | 1709 |
100 | 1764 |
101 | 1819 |
102 | 1874 |
103 | 1929 |
104 | 1984 |
105 | 2039 |
106 | 2094 |
107 | 2149 |
108 | 2205 |
109 | 2271 |
110 | 2337 |
111 | 2403 |
112 | 2469 |
113 | 2535 |
114 | 2601 |
115 | 2679 |
116 | 2756 |
117 | 2833 |
118 | 2910 |
119 | 2998 |
120 | 3086 |
121 | 3197 |
122 | 3307 |
123 | 3417 |
124 | 3527 |
125 | 3638 |
126 | 3748 |
127 | 3858 |
128 | 3968 |
129 | 4079 |
130 | 4189 |
131 | 4289 |
132 | 4409 |
133 | 4541 |
134 | 4674 |
135 | 4806 |
136 | 4938 |
137 | 5071 |
138 | 5203 |
139 | 5357 |
140 | 5512 |
141 | 5677 |
142 | 5842 |
143 | 6008 |
144 | 6173 |
145 | 6393 |
146 | 6614 |
147 | 6779 |
148 | 6844 |
149 | 7165 |
150 | 7385 |
MODALS_PRICINGAVAILABILITY
MODALS_PRICINGAVAILABILITY_DESCRIPTION
MODALS_SIDEWALL_SIDEWALL_DEFINITIONS
MODALS_SIDEWALL_SIDEWALL_DEFINITIONS_DESCRIPTION
MODALS_SIDEWALL_SIDEWALL_DEFINITIONS_DESCRIPTION_2
SPECS
SPEC_SUMMARY
SPEED_RATING
SPEED_RATING_EXPLANATION
LEGAL_NOTECode | Rating (mph) |
---|---|
Q | 99 |
R | 106 |
S | 112 |
T | 118 |
U | 124 |
H | 130 |
V | 149 |
W | 168* |
Y | 186* |
*For tires with a maximum speed capability over 149 mph, tire manufacturers sometimes use the letters ZR. For those with a maximum speed capability over 186 mph, tire manufactures always use the letters ZR.
Source: consumerreport.orgChart Source: safercar.gov
FIND_YOUR_TIRE_SIZE
WHERE_DO_I_FIND_MY_TIRE_SIZE
WHERE_DO_I_FIND_MY_TIRE_SIZE_ANSWERWHERE_IS_MY_PLACARD
IF_YOU_HAVE_A_NEWER_VEHICLEHOW_DO_I_READ_MY_TIRE_SIZE_ON_PLACARD
DIAGRAM_INFOMODALS_SIZE_METRIC_TYPE
MODALS_SIZE_METRIC_TYPE_DESCRIPTIONMODALS_SIZE_WIDTH
MODALS_SIZE_WIDTH_DESCRIPTIONMODALS_SIZE_ASPECT_RATIO
MODALS_SIZE_ASPECT_RATIO_DESCRIPTIONMODALS_SIZE_CONSTRUCTION_TYPE
MODALS_SIZE_CONSTRUCTION_TYPE_DESCRIPTIONMODALS_SIZE_RIM_SIZE
MODALS_SIZE_RIM_SIZE_DESCRIPTIONSource: safercar.gov. The placard is only an example. Your vehicle placard may look different.
MODALS_TIRETYPE_TIRE_TYPE
MODALS_TIRETYPE_TIRE_TYPE_DESCRIPTION
MODALS_TIRE_MANUFACTURERS_TREAD_WARRANTY
MODALS_TIRE_MANUFACTURERS_TREAD_WARRANTY_C1
MODALS_TIRE_MANUFACTURERS_TREAD_WARRANTY_C2
MODALS_TIRE_MANUFACTURERS_TREAD_WARRANTY_C3
WHAT_IS_MY_TRIM
MODALS_TRIMHELP_C1
MODALS_TRIMHELP_C2
MODALS_TRIMHELP_C3
MODALS_TRIMHELP_C4
UTQG
Uniform Tire Quality Grades (UTQG) apply to new pneumatic passenger car tires. The Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width.
Treadwear: The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and one-half times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices, and differences in road characteristics and climate.
Traction: The traction grades, from highest to lowest are AA, A, B, and C. The grades represent the tire’s ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.
WARNING: The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning or peak traction characteristics.
Temperature: The temperature grades are A (the highest), B and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 139. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.
WARNING: The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.
Source: Ford Owner's Guide