So you've made it to here... we're guessing you need a little help decoding your tyre size. Never fear we're here to help, the below information will shed some light and get you on your way!
The tyre width is measured from end to end of the tyre including the sidewall but excluding raised lettering or rim protectors.
Safety Tip: Tyre width affects performance and fuel economy.
35% is the aspect ratio, representing the height of the tyre's sidewall as a percentage of its width.
Safety Tip: Check tyre pressure regularly to avoid low-pressure issues.
The inner diameter of your tyre's rim. For example, R19 indicates 19 inches.
Safety Tip: Use the correct size for optimal performance.
The load index indicates the maximum weight in kg your tyre can safely support.
Safety Tip: Avoid exceeding this weight to prevent steering instability.
The speed index shows the maximum speed for the tyre at full load.
Safety Tip: Ensure the tyre's speed rating matches your needs.
The manufacturing date helps determine tyre age. For example, 5118 means the 51st week of 2018.
Safety Tip: Avoid aged rubber to ensure tyre safety.
Load Index | Pounds | Kilograms | Load Index | Pounds | Kilograms | Load Index | Pounds | Kilograms | ||
---|---|---|---|---|---|---|---|---|---|---|
70 | 739 | 335 | 89 | 1,279 | 580 | 108 | 2,205 | 1,000 | ||
71 | 761 | 345 | 90 | 1,323 | 600 | 109 | 2,271 | 1,030 | ||
72 | 783 | 355 | 91 | 1,356 | 615 | 110 | 2,337 | 1,060 | ||
73 | 805 | 365 | 92 | 1,389 | 630 | 111 | 2,403 | 1,090 | ||
74 | 827 | 375 | 93 | 1,433 | 650 | 112 | 2,469 | 1,120 | ||
75 | 853 | 387 | 94 | 1,477 | 670 | 113 | 2,535 | 1,150 | ||
76 | 882 | 400 | 95 | 1,521 | 690 | 114 | 2,601 | 1,180 | ||
77 | 908 | 412 | 96 | 1,565 | 710 | 115 | 2,679 | 1,215 | ||
78 | 937 | 425 | 97 | 1,609 | 730 | 116 | 2,756 | 1,250 | ||
79 | 963 | 437 | 98 | 1,653 | 750 | 117 | 2,833 | 1,285 | ||
80 | 992 | 450 | 99 | 1,709 | 775 | 118 | 2,910 | 1,320 | ||
81 | 1,019 | 462 | 100 | 1,764 | 800 | 119 | 2,998 | 1,360 | ||
82 | 1,047 | 475 | 101 | 1,819 | 825 | 120 | 3,086 | 1,400 | ||
83 | 1,074 | 487 | 102 | 1,874 | 850 | 121 | 3,197 | 1,450 | ||
84 | 1,102 | 500 | 103 | 1,929 | 875 | 122 | 3,307 | 1,500 | ||
85 | 1,135 | 515 | 104 | 1,984 | 900 | 123 | 3,417 | 1,550 | ||
86 | 1,168 | 530 | 105 | 2,039 | 925 | 124 | 3,527 | 1,600 | ||
87 | 1,201 | 545 | 106 | 2,094 | 950 | 125 | 3,638 | 1,650 | ||
88 | 1,235 | 560 | 107 | 2,149 | 975 | 126 | 3,748 | 1,700 |
Speed Code | Speed (mph) | Speed (k/ph) | Category |
---|---|---|---|
L | 75 mph | 120 km/h | Off-Road & Light Truck Tires |
M | 81 mph | 130 km/h | Temporary Spare Tires |
N | 87 mph | 140km/h | |
P | 93 mph | 150 km/h | |
Q | 99 mph | 160 km/h | Studless & Studdable Winter Tires |
R | 106 mph | 170 km/h | H.D. Light Truck Tires |
S | 112 mph | 180 km/h | Family Sedans & Vans |
T | 118 mph | 190 km/h | Family Sedans & Vans |
U | 124 mph | 200 km/h | |
H | 130 mph | 210 km/h | Sport Sedans & Coupes |
V | 149 mph | 240 km/h | Sport Sedans, Coupes & Sports Cars |
W | 168 mph | 270 km/h | Exotic Sports Cars |
Y | 186 mph | 300 km/h | Exotic Sports Cars |
ZR | 149 mph | 240 km/h | Exotic Sports Cars |