Spy Shot! Prototype Michelin 700x25c Rough Road Tire
Spotted at the Ballers Ride aboard an industry person’s bike were these prototype Michelin tires designed for rougher roads.
Tech specs weren’t available, but the rider said the casing was reinforced all the way around, protecting both sidewalls and tread. These were mounted to Boyd Cycling Altamont wheels, which pushed the mounted width to about 27mm wide when held next to our own Hutchinson Secteur 28 on the same rim. That’s not surprising since we have some Michelin Pro4 25c tires on Rolf Ares 4 wheels that are also measuring at 27mm wide.
That’s all we know for now, but there are more pics below…