tool
tyre decoder
Type the size moulded on the sidewall. Add a replacement size to check that it fits the rim and keeps the stock load and speed rating.
The decoder needs JavaScript. Worked by hand: 90/90-18 51P is 90 mm wide, its sidewall 90 % of the width, bias construction, for an 18 inch rim, load index 51 (195 kg) and speed symbol P (150 km/h); its overall diameter is about 619.2 mm. A 100/80-18 53P fits the same rim with a higher rating and is 0.3 % smaller across.
| symbol | up to |
|---|---|
| J | 100 km/h |
| K | 110 km/h |
| L | 120 km/h |
| M | 130 km/h |
| N | 140 km/h |
| P | 150 km/h |
| Q | 160 km/h |
| R | 170 km/h |
| S | 180 km/h |
| T | 190 km/h |
| U | 200 km/h |
| H | 210 km/h |
| V | 240 km/h |
| W | 270 km/h |
| Y | 300 km/h |
| index | per tyre |
|---|---|
| 34 | 118 kg |
| 35 | 121 kg |
| 36 | 125 kg |
| 37 | 128 kg |
| 38 | 132 kg |
| 39 | 136 kg |
| 40 | 140 kg |
| 41 | 145 kg |
| 42 | 150 kg |
| 43 | 155 kg |
| 44 | 160 kg |
| 45 | 165 kg |
| 46 | 170 kg |
| 47 | 175 kg |
| 48 | 180 kg |
| 49 | 185 kg |
| 50 | 190 kg |
| 51 | 195 kg |
| 52 | 200 kg |
| 53 | 206 kg |
| 54 | 212 kg |
| 55 | 218 kg |
| 56 | 224 kg |
| 57 | 230 kg |
| 58 | 236 kg |
| 59 | 243 kg |
| 60 | 250 kg |
| 61 | 257 kg |
| 62 | 265 kg |
| 63 | 272 kg |
| 64 | 280 kg |
| 65 | 290 kg |
| 66 | 300 kg |
| 67 | 307 kg |
| 68 | 315 kg |
| 69 | 325 kg |
tube or tubeless
Cast wheels normally run tubeless tyres without a tube; spoked wheels need an inner tube unless the rim is sealed. The decoder warns when a tube-type tyre is chosen for a cast wheel.
send the exact list, get one quote back
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