Tyre load index — calculator and chart
The number in front of the speed letter — the 91 in 205/55 R 16 91 V — is the load index: a code for the maximum load the tyre carries at the pressure and speed it was designed for. It is not the load in kilograms; look it up below.
Calculator
Enter a load index or a load in kg or lbs — the other values fill in.
| Index | kg | lbs |
|---|---|---|
| 62 | 265 | 584 |
| 63 | 272 | 600 |
| 64 | 280 | 617 |
| 65 | 290 | 639 |
| 66 | 300 | 661 |
| 67 | 307 | 677 |
| 68 | 315 | 694 |
| 69 | 325 | 717 |
| 70 | 335 | 739 |
| 71 | 345 | 761 |
| 72 | 355 | 783 |
| 73 | 365 | 805 |
| 74 | 375 | 827 |
| 75 | 387 | 853 |
| 76 | 400 | 882 |
| 77 | 412 | 908 |
| 78 | 425 | 937 |
| 79 | 437 | 963 |
| 80 | 450 | 992 |
| 81 | 462 | 1 019 |
| 82 | 475 | 1 047 |
| 83 | 487 | 1 074 |
| 84 | 500 | 1 102 |
| 85 | 515 | 1 135 |
| 86 | 530 | 1 168 |
| 87 | 545 | 1 202 |
| 88 | 560 | 1 235 |
| 89 | 580 | 1 279 |
| 90 | 600 | 1 323 |
| 91 | 615 | 1 356 |
| 92 | 630 | 1 389 |
| 93 | 650 | 1 433 |
| 94 | 670 | 1 477 |
| 95 | 690 | 1 521 |
| 96 | 710 | 1 565 |
| 97 | 730 | 1 609 |
| 98 | 750 | 1 653 |
| 99 | 775 | 1 709 |
| 100 | 800 | 1 764 |
| 101 | 825 | 1 819 |
| 102 | 850 | 1 874 |
| 103 | 875 | 1 929 |
| 104 | 900 | 1 984 |
| 105 | 925 | 2 039 |
| 106 | 950 | 2 094 |
| 107 | 975 | 2 150 |
| 108 | 1 000 | 2 205 |
| Index | kg | lbs |
|---|---|---|
| 109 | 1 030 | 2 271 |
| 110 | 1 060 | 2 337 |
| 111 | 1 090 | 2 403 |
| 112 | 1 120 | 2 469 |
| 113 | 1 150 | 2 535 |
| 114 | 1 180 | 2 601 |
| 115 | 1 215 | 2 679 |
| 116 | 1 250 | 2 756 |
| 117 | 1 285 | 2 833 |
| 118 | 1 320 | 2 910 |
| 119 | 1 360 | 2 998 |
| 120 | 1 400 | 3 086 |
| 121 | 1 450 | 3 197 |
| 122 | 1 500 | 3 307 |
| 123 | 1 550 | 3 417 |
| 124 | 1 600 | 3 527 |
| 125 | 1 650 | 3 638 |
| 126 | 1 700 | 3 748 |
| 127 | 1 750 | 3 858 |
| 128 | 1 800 | 3 968 |
| 129 | 1 850 | 4 079 |
| 130 | 1 900 | 4 189 |
| 131 | 1 950 | 4 299 |
| 132 | 2 000 | 4 409 |
| 133 | 2 060 | 4 542 |
| 134 | 2 120 | 4 674 |
| 135 | 2 180 | 4 806 |
| 136 | 2 240 | 4 938 |
| 137 | 2 300 | 5 071 |
| 138 | 2 360 | 5 203 |
| 139 | 2 430 | 5 357 |
| 140 | 2 500 | 5 512 |
| 141 | 2 575 | 5 677 |
| 142 | 2 650 | 5 842 |
| 143 | 2 725 | 6 008 |
| 144 | 2 800 | 6 173 |
| 145 | 2 900 | 6 393 |
| 146 | 3 000 | 6 614 |
| 147 | 3 075 | 6 779 |
| 148 | 3 150 | 6 945 |
| 149 | 3 250 | 7 165 |
| 150 | 3 350 | 7 385 |
| 151 | 3 450 | 7 606 |
| 152 | 3 550 | 7 826 |
| 153 | 3 650 | 8 047 |
| 154 | 3 750 | 8 267 |
| 155 | 3 875 | 8 543 |
| Index | kg | lbs |
|---|---|---|
| 156 | 4 000 | 8 818 |
| 157 | 4 125 | 9 094 |
| 158 | 4 250 | 9 370 |
| 159 | 4 375 | 9 645 |
| 160 | 4 500 | 9 921 |
| 161 | 4 625 | 10 196 |
| 162 | 4 750 | 10 472 |
| 163 | 4 875 | 10 748 |
| 164 | 5 000 | 11 023 |
| 165 | 5 150 | 11 354 |
| 166 | 5 300 | 11 684 |
| 167 | 5 450 | 12 015 |
| 168 | 5 600 | 12 346 |
| 169 | 5 800 | 12 787 |
| 170 | 6 000 | 13 228 |
| 171 | 6 150 | 13 558 |
| 172 | 6 300 | 13 889 |
| 173 | 6 500 | 14 330 |
| 174 | 6 700 | 14 771 |
| 175 | 6 900 | 15 212 |
| 176 | 7 100 | 15 653 |
| 177 | 7 300 | 16 094 |
| 178 | 7 500 | 16 535 |
| 179 | 7 750 | 17 086 |
| 180 | 8 000 | 17 637 |
| 181 | 8 250 | 18 188 |
| 182 | 8 500 | 18 739 |
| 183 | 8 750 | 19 290 |
| 184 | 9 000 | 19 842 |
| 185 | 9 250 | 20 393 |
| 186 | 9 500 | 20 944 |
| 187 | 9 750 | 21 495 |
| 188 | 10 000 | 22 046 |
| 189 | 10 300 | 22 708 |
| 190 | 10 600 | 23 369 |
| 191 | 10 900 | 24 030 |
| 192 | 11 200 | 24 692 |
| 193 | 11 500 | 25 353 |
| 194 | 11 800 | 26 015 |
| 195 | 12 150 | 26 786 |
| 196 | 12 500 | 27 558 |
| 197 | 12 850 | 28 329 |
| 198 | 13 200 | 29 101 |
| 199 | 13 600 | 29 983 |
| 200 | 14 000 | 30 865 |
| 201 | 14 500 | 31 967 |
Why the number matters
The load index is a per-tyre rating. Four tyres at LI 100 carry a theoretical 3 200 kg between them — but real axles don't share weight evenly, and a dual-wheel set reads differently again. When a spec sheet calls for a minimum index, it is a floor, not a suggestion: an underrated tyre runs hot and lets go on the one trip that mattered.
Bakkies and trucks running loaded gravel routes are where this bites. If you know the axle load, halve it (or quarter it on duals), look up the index that covers it — and then check the speed rating on the same sidewall. The two ratings work together; a tyre only carries its index up to its rated speed.
New to the sidewall? How to read tyre sidewall markings decodes the whole string. Also in the toolkit: pressure converter and unit converter.