Tyre Sidewall Markings

On the sidewall of your tyres you will see something similar to this;

Tyre Markings

In this example we are looking at a 205/55R16 91W

This tells us the tyre size, load index and speed rating of your tyres.

205 = Section width of your tyre in millimetres (205mm)

55 = Aspect ratio of your tyre (the sidewall height as a % of the section width)

R = Radial

16 = Rim diameter in inches (16 inch)

91 = Load Index (load capacity i.e. maximum weight your tyre can carry)

W = Speed Rating

For further information on tyre speed and load ratings please see tables below.


Speed Index Table


Indexkm/hmphIndexkm/hmph
N 140 87 U 200 124
P 150 94 H 210 130
Q 160 100 V 240 149
R 170 106 ZR Over 240 Over 149
S 180 112 W 270 168
T 190 118 Y 300 186

Load index table


IndexCapacity [kg]Capacity [lbs]IndexCapacity [kg]Capacity [lbs]
71 345 761 91 615 1356
72 355 783 92 630 1389
73 365 805 93 650 1433
74 375 827 94 670 1477
75 387 853 95 690 1521
76 400 882 96 710 1565
77 412 908 97 730 1609
78 425 937 98 750 1653
79 437 963 99 775 1709
80 450 992 100 800 1764
81 462 1019 101 825 1819
82 475 1047 102 850 1874
83 487 1074 103 875 1929
84 500 1102 104 900 1984
85 515 1132 105 925 2039
86 530 1168 106 950 2094
87 545 1205 107 975 2149
88 560 1231 108 1000 2205
89 580 1279 109 1030 2271
90 600 1323 110 1060 2337