Adjusting the kart set up using discs for the toe

If we were to looked at a kart from above, we would realise that the front wheels are almost never perfectly parallel to each other, but form, in relation to the kart’s longitudinal axis, an angle that can be negative (the two wheels “point” inwards, towards each other) or positive (the wheels point outwards). This angle is called the toe and is necessary to balance the forces that occur once the vehicle is in motion. Therefore, it is a fundamental parameter in the kart’s set up, which affects both the performance of the kart and tyre wear. Adjusting the toe correctly is important for achieving a good feeling when driving and, above all, optimising the kart’s performance. Conversely, a poorly adjusted toe can cost a lot in terms of lap times. There are various ways to adjust the toe. The one that uses special “discs” (or plates) is the quickest, simplest and most effective.