Darra Tyres, Brisbane

The markings on the side of the tyre may look confusing at first but when you think that this simply code has the ability to categorise over 10,000 different tyres it is a great tool to understand. The markings will quickly let our team identify what tyre you need because it’s important that we choose the right tyre for your needs.

TYRE DIAGRAM

We’ve broken down the parts below:

205 – This is the width of the tyre in millimetres, it normally means the top three-quarters of the tyre. The bit that would make contact with the road.

50 – This is the height of the tyre, expressed as a percentage of the width. It’s often called the aspect ratio. A 50 series means that the height is 50% of the width of the tyre.

R – Implies the tyre is a Radial, Radial tyres are by far the most common especially when it comes to car tyres.

15 – This is the Rim diameter in inches.

82 – Load index, This is the amount of weight the tyre can support

H – Speed Index – This represents the Maximum Speed the tyre was intended to do. A H would be up to 210 km/hr.

See the following tables for the full definitions:

Tyre Loan Index Table

Load Index Kg Load Index Kg
65 290 94 670
66 300 95 690
67 307 96 710
68 315 97 730
69 325 98 750
70 335 99 775
71 345 100 800
72 355 101 825
73 365 102 850
74 375 103 875
75 387 104 900
76 400 105 925
77 412 106 950
78 425 107 975
79 237 108 1000
80 450 110 1030
81 462 110 1060
82 475 111 1100
83 487 112 1120
84 500 113 1150
85 515 114 1180
86 530 115 1215
87 545 116 1250
88 560 117 1285
89 580 118 1320
90 600 119 1360
91 615
92 630
93 650

Tyre Speed Rating Table

Speed symbol Maximum speed km/h
mph
J 100 62 Truck
K 110 68 Truck
L 120 75 Truck
M 130 81 Truck
N 140 87 Van
P 150 93 Van
Q 160 99 Winter Reinforced
R 170 106 Winter Reinforced
S 180 112 Car
T 190 118 Car
U 200 124 Car
H 210 130 Car
V 240 149 Car
W 270 168 Car
Y 300 186 Car
VR 210 130 Car
ZR 240 149 Car