The continental ultra sport ii clincher wired road tyre offers everything you need performance wise for racing reliable puncture protection from the robust 3180 tpi design good grip and a long tread life from the silica based compound tyre sizes are available to cover a range of intended uses for racing there is the 23 mm width touring and long distance cyclists may favour the more forgiving 25 mm size and if the frame allows a 28 mm version offers more grip even more comfort and greater