Want grip ? Got grip! The softest tyre material compound in this range has only one aim: To, quite literally, stick your tyres to the road! Consequently the effective working temperature is reached relatively quickly. The disadvantage of such a grippy, soft tyre compound though is that, unfortunately, they have to be replaced after every race. The recommended tyre pressures are 1.2 - 1.3 bar at the front and 1.4 - 1.9 bar at the rear.