Engineered for dry, hardpacked trails Grip with low rolling resistance. With a tread pattern derived from the tire that won an Olympic mountain biking gold medal, the Michelin Jet is built for speed. Its secret? A siped tread design that maximizes your efficiency in dry conditions and provides optimal braking performance. If you're looking for a tire that can give you the edge on fast courses, look no further than the Michelin Jet.