The load index on a tire indicates how much weight each tire can safely support. To determine what load rating your vehicle requires:
- Check your owners manual, or
- Take the total weight of the fully loaded vehicle (full tank of gas, luggage, all the kids, everything) and divide it by 4.
The chart below lists each Load Index value and load carrying capacity associated with it.
Load Index | Load Carrying Capacity (lbs. per tire) | Load Index | Load Carrying Capacity (lbs. per tire) |
71 | 761 | 98 | 1,653 |
72 | 783 | 99 | 1,709 |
73 | 805 | 100 | 1,764 |
74 | 827 | 101 | 1,819 |
75 | 853 | 102 | 1,874 |
76 | 882 | 103 | 1,929 |
77 | 908 | 104 | 1,984 |
78 | 937 | 105 | 2,039 |
79 | 963 | 106 | 2,094 |
80 | 992 | 107 | 2,149 |
81 | 1,019 | 108 | 2,205 |
82 | 1,047 | 109 | 2,271 |
83 | 1,074 | 110 | 2,337 |
84 | 1,102 | 111 | 2,403 |
85 | 1,135 | 112 | 2,469 |
86 | 1,168 | 113 | 2,535 |
87 | 1,202 | 114 | 2,601 |
88 | 1,235 | 115 | 2,649 |
89 | 1,279 | 116 | 2,756 |
90 | 1,323 | 117 | 2,833 |
91 | 1,356 | 118 | 2,910 |
92 | 1,389 | 119 | 2,998 |
93 | 1,433 | 120 | 3,086 |
94 | 1,477 | 121 | 3,297 |
95 | 1,521 | 122 | 3,307 |
96 | 1,565 | 123 | 3,417 |
97 | 1,609 | 124 | 3,527 |
Notes
Light Truck (LT) and Special Trailer (ST) tires often have 2 Load Indexes on the sidewall, separated by a slash. For example:
LT235/75R15 104/101S
The first number is the load index when the tire is used on a single-wheel rear axle. The second number is the load index when used on a dual-wheel rear axle.
The dual-wheel rear axle load index is actually lower than the single-wheel application. This is done to add "reserve capacity".
In a "dually" application, if one tire should fail, the remaining tire must support the load previously shared by the two tires. If the load index were higher, the single remaining tire would fail. By lowering the load index, it is more likely that the remaining tire will support the weight of the vehicle until you can stop and repair the tire.