MICHELINR PRO4 Comp Limited Service Course. This tire is exclusively given over to the quest for extra speed. It is the range's fastest tire and allows cyclists to cover four additional meters per minute for the same input compared with the MICHELIN PRO4 Service Course. Powered by a 250W motor, the distance covered by the assembly in 60 seconds is 544 metres, by which time it is travelling at a speed of 38.4kph. It also delivers the market's lowest rolling resistance 2.8kgt, for a weight of just 165 grams. Yet this performance does not detract from the remarkable grip and handling that are hallmarks of the tires that make up the range. Its dual compound technology employs new silica based compounds and elastomers. The compound used for the central part of the tread has been selected for long tire life and low rolling resistance, while the compounds used for the shoulders favor grip as the rider leans through corners. Finally, the contact patch of the MICHELIN PRO4 COMP Limited Service Course is optimized thanks to the tire's supple casing. The use of finer threads enables it to soak up irregularities in the road surface.