![]() ![]() The Pro4 uses a bi-compound silica and elastomer compound with an egg shaped tread shape. ![]() No easy task: extra grip usually comes with a softer compound at the expense of durability. One of the key changes Michelin made to the Pro4 is in the tread compound and shape, in pursuit of improved durability and grip. The Pro4 however feels rapid out of the box and even compared to the reasonably light Pro4 Endurance tyres they replaced, the transformation in the bike's speed and handling was profound. The old tyre never felt fast, though performed well in roll down tests. The performance is excellent, with a marked improvement in rolling resistance over the old Pro3. The inner tube showed evidence of an impact flat, with the telltale parallel slits. I've had one puncture in that time, and that came during my first road race when I hit an unseen pothole. I've clocked up about a 1,000 miles so far, including mostly training rides on my local rides, plus my first couple of road races. Now in its fourth generation, the tyre is an substantial improvement over the old Pro3 in every way grip, speed and durability. They save the best for the Service Course though, the lightest and fastest tyres. Michelin revamped its road clincher tyre range at the end of last year with the introduction of the new Pro4, a range which now encompasses tyres for a range of conditions. Fast, light, grippy and impressively durable, Michelin's latest top-level Pro4 Service Course tyres are perfect for summer racing and training. ![]()
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