The sidewall provides valuable information about the tyre including the specifications, the brand, and the type of construction. All numbers are standardized and recognized by tyre manufacturers around the world.

Codes:

• 1. Section Width(mm)
• 2. Aspect Ratio(Section height as a percentage of the section width).
• 3. Rim Diameter(in)
• 4. Load Index
• 5. Speed Rating
   

Load Index (Maximum Load)

LI	lbs	kg	LI	lbs	kg	LI	lbs	kg	LI	lbs	kg
71 72 73 74 75 76 77 78 79 80	761 783 805 827 853 882 908 937 963 992	345 355 365 375 387 400 412 425 437 450	81 82 83 84 85 86 87 88 89 90	1019 1047 1074 1102 1135 1168 1201 1235 1279 1323	462 475 487 500 515 530 545 560 580 600	91 92 93 94 95 96 97 98 99 100	1356 1389 1433 1477 1521 1565 1609 1653 1709 1764	615 630 650 670 690 710 730 750 775 800	101 102 103 104 105 106 107 108 109 110	1819 1874 1929 1984 2039 2094 2149 2205 2271 2337	825 850 875 900 925 950 975 1000 1030 1060

Speed Rating (Maximum Speed)

	J	K	L	M	N	P	Q	R	S	T	H	V	W	Y
mph	62	68	75	81	87	93	100	106	113	118	130	150	168	188
kmh	100	110	120	130	140	150	160	170	180	190	210	240	270	300

Every tyre is designed with a tread wear indicator (TWI) which is a raised section molded into the grooves of a tyre. In passenger car tires, the TWI is around 1.6 mm and the tyre shoulder is labeled with TWI or the △ symbol.

TWI indicates the tread wear limit and helps vehicle owners understand the tread wear so they know when to replace the tires. When the tread is leveled with the TWI, the tread pattern will be separated and the tires need to be replaced immediately.

Note: When tread wear limit is reached, handling, braking, and water evacuation will significantly be decreased. Extremely dangerous!

 

Replace Tires Immediately If:

Sidewall Bulges

Please replace tires immediately to avoid tyre blowouts

Multiple Cuts

Increases probability of tyre leak

Sidewall Cracks

Tyre shows signs of deterioration

 

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