alfa tyre ptotector

Numbers in my tyres, What does it Mean?

Confused by what is written on your tyre or want to understand the tyre rating chart, our experts are here to guide you. Get in touch with us and one of our technicians will be happy to help you. We will advise whether you need new tyres, simply call us on 08028284351 or through our contact page.

A detailed explanation of tyre specifications

The markings on a tyre may look confusing but they are actually very important. Each marking provides a vital piece of information about the specification of each tyre. This includes information such as the maximum speed the tyre can safely sustain, the loads it can carry and the relevant safety standards.

If you are looking for a guide with the tyre markings explained in Australia, the following will be of great help. From enabling you to understand the tyres speed rating codes to the tyre date code, the tire writing and lettering provide you with a lot of information.

  1. The width of tyre in mm.
  2. Aspect Ratio of the tyre. The height of the tyre sidewall as a percentage of the width. In this case it would be XX% of XXmm.
  3. The Tyre construction type. EG Radial.
  4. The diameter of the tyres inner rim in inches.
  5. The load capacity (see below for more information)
  6. The speed rating (see below for more information)
  7. Indicates tyres are suitable for mud and snow (appears on applicable tyres only).
  8. Date of manufacture XX week then XX year.
  9. DOT Code indicates the tyres are compliant with Australian approvals
  10. Denotes direction of tyre rotation when fitted.

Load Rating Chart

Load Index Kgs Load Index Kgs Load Index Kgs
65 290 80 450 95 690
66 300 81 462 96 710
67 307 82 475 97 730
68 215 83 487 98 750
69 325 84 500 99 775
70 335 85 515 100 800
71 345 86 530 101 825
72 355 87 545 102 850
73 365 88 560 103 875
74 375 89 580 104 900
75 387 90 600 105 925
76 400 91 615 106 950
77 412 92 630 107 975
78 425 93 650 108 1000
79 437 94 670

 

Speed Rating Chart

Speed Symbol Approx MPH Approx KM/H
Q 99 160
R 106 170
S 112 180
T 118 190
H 131 210
V 149 240
VR 131 210
W 168 270
Y 186 300
ZR 149 240

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