MICHELIN WildRaceR Advanced tires are available in three sizes, and are recommended for racing. The 127 TPI carcass is flexible and lightweight, while MICHELIN Dual Compound technology helps enhance performance: the harder rubber compound below the tread is highly resistant to punctures, while the softer compound on the outside of the tread helps enhance grip. MICHELIN Gumwall technology helps protect the sidewalls and provides an excellent seal for tubeless applications. Michelin WildRace'R tires feature a broad distribution of knobs across the tread to promote efficiency and help ensure excellent resistance to punctures. The position of the shoulder knobs helps provide superb grip when climbing out of ruts or when leaned over. This also helps offer more predictable, progressive cornering.