Load Range vs. Load Index
When your OEM tire has reached its limit, you cannot just pick the first tire you encounter and mount it on your wheels. You have to consider different factors such as Load Range and Load Index. If you are not familiar with these two yet, let us help you to understand more about these tire load range and load index before you buy tires online.
LOAD RANGE AND PLY RATING
Load Range is the classification of tire’s maximum weight and air pressure capabilities. It allows you to know the sturdiness and capability of a tire. Load Ranges is identified by a letter indicated on the tire sidewall and located at the end part of tire size.
P235/75R-15 XL
In the given example above, the load range is XL which stands for Extra Load. The range may differ based on the ply rating of the tire. Ply Rating is an old way to measure the load carrying capacity. The thicker the layer is, the higher the ply rating. It is the same with the load range – the higher load range, the heavier load capacity. Nowadays, manufacturers use few but sturdier plies so the load range is being used to know the toughness and maximum air pressure of the tire. Here are the Load Range and Ply Rating which you can use as a reference to know the load capacity of the tire.
If you are a passenger vehicle owner, you can see the reference below to see the appropriate range for your vehicle. There are three passenger tire load ranges: Light Road, Standard Load, and Extra Load that are commonly 2 to 4-ply tires.
P-Metric Passenger Vehicle Tires
LOAD RANGE | ABBREVIATED | MAX. LOAD PRESSURE |
---|---|---|
Light Load | LL | 35 psi |
Standard Load | SL | 35 psi |
Extra Load | XL | 41 psi |
While if you are a light truck vehicle owner, you can probably notice wider tire ranges: B, C, D, E, and F.
LT- Metric Light Truck Tires
LOAD RANGE | PLY RATING | ABBREVIATED | MAX. LOAD PRESSURE |
---|---|---|---|
B | 4 | B | 35 psi |
C | 6 | C | 50 psi |
D | 8 | D | 65 psi |
E | 10 | E | 80 psi |
F | 12 | F | 95 psi |
LOAD INDEX AND LOAD CARRYING CAPACITY
Load Index is the indication of the carrying capacity of an inflated tire while Load Carrying Capacity is the indication how much weight a tire can carry. These are both located on the tire sidewall
You can use the provided table below to know the load capacity of your tires.
Load Index & Carrying Capacity
LOAD INDEX | CARRYING CAPACITY (lbs) | LOAD INDEX | CARRYING CAPACITY (lbs) | LOAD INDEX | CARRYING CAPACITY (lbs) |
---|---|---|---|---|---|
0 | 99 | 50 | 419 | 100 | 1764 |
1 | 102 | 51 | 430 | 101 | 1819 |
2 | 105 | 52 | 441 | 102 | 1874 |
3 | 107 | 53 | 454 | 103 | 1929 |
4 | 110 | 54 | 467 | 104 | 1984 |
5 | 114 | 55 | 481 | 105 | 2039 |
6 | 117 | 56 | 494 | 106 | 2094 |
7 | 120 | 57 | 507 | 107 | 2149 |
8 | 123 | 58 | 520 | 108 | 2205 |
9 | 128 | 59 | 536 | 109 | 2271 |
10 | 132 | 60 | 551 | 110 | 2337 |
11 | 136 | 61 | 567 | 111 | 2403 |
12 | 139 | 62 | 584 | 112 | 2469 |
13 | 143 | 63 | 600 | 113 | 2535 |
14 | 148 | 64 | 617 | 114 | 2601 |
15 | 152 | 65 | 639 | 115 | 2679 |
16 | 157 | 66 | 639 | 116 | 2756 |
17 | 161 | 67 | 677 | 117 | 2833 |
18 | 165 | 68 | 694 | 118 | 2910 |
19 | 171 | 69 | 716 | 119 | 2998 |
20 | 176 | 70 | 739 | 120 | 3086 |
21 | 182 | 71 | 761 | 121 | 3197 |
22 | 187 | 72 | 783 | 122 | 3307 |
23 | 193 | 73 | 805 | 123 | 3417 |
24 | 198 | 74 | 827 | 124 | 3527 |
25 | 204 | 75 | 852 | 125 | 3638 |
26 | 209 | 76 | 882 | 126 | 3748 |
27 | 215 | 77 | 908 | 127 | 3858 |
28 | 220 | 78 | 937 | 128 | 3968 |
29 | 227 | 79 | 963 | 129 | 4079 |
30 | 234 | 80 | 992 | 130 | 4189 |
31 | 240 | 81 | 1019 | 131 | 4289 |
32 | 247 | 82 | 1047 | 132 | 4409 |
33 | 254 | 83 | 1074 | 133 | 4541 |
34 | 260 | 84 | 1102 | 134 | 4674 |
35 | 267 | 85 | 1135 | 135 | 4806 |
36 | 276 | 86 | 1168 | 136 | 4938 |
37 | 282 | 87 | 1201 | 137 | 5071 |
38 | 291 | 88 | 1235 | 138 | 5203 |
39 | 300 | 89 | 1279 | 139 | 5357 |
40 | 309 | 90 | 1323 | 140 | 5512 |
41 | 320 | 91 | 1356 | 141 | 5677 |
42 | 331 | 92 | 1389 | 142 | 5842 |
43 | 342 | 93 | 1433 | 143 | 6008 |
44 | 353 | 94 | 1477 | 144 | 6173 |
45 | 364 | 95 | 1521 | 145 | 6393 |
46 | 375 | 96 | 1565 | 146 | 6614 |
47 | 386 | 97 | 1609 | 147 | 6779 |
48 | 397 | 98 | 1653 | 148 | 6844 |
49 | 408 | 99 | 1709 | 149 | 7165 |