Long miles and winter training rides call for a tire that won't give up the ghost at the first sight of road debris. The Michelin Pro4 Endurance Clincher Tire steps in to provide exceptional flat protection and durability to power long endurance road races or tackle all those off season base miles. The Pro4 Endurance is the marathon runner of Michelin's Pro4 lineup, built to churn out the miles with grit and perseverance. Featuring a high density HDProtection belt along the entire casing, the Pro4 has a claimed additional 40% flat resistance compared to competitors. Bead2Bead technology means the HDProtection belt also extends from one bead to the other for full tire protection, so you'll spend less time by the side of the road wrestling with tubes and C02 cartridges and more time racking up the miles. Michelin knows that you don't just want a tire that reduces flats. You also want it to go fast. While the advanced protection brings with it a smidgeon more weight compared to the Pro4 tires without it, these tires still clock in at an acceptable weight for getting up climbs. Michelin's BiCompound adds to the speed with a more rigid center for high durability, low rolling resistance, and just the right grip for stable braking on dry and wet roads. At the shoulder, a slightly stickier rubber provides extra grip for sweeping through corners regardless of weather.