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.
Before starting the real work on adjusting the toe, place the kart on the trolley, so that it is easier to work on and, above all, the front is off the ground and clear. We also recommend blocking the steering wheel so that it stays still. Once the kart is ready, remove the front wheels from the chassis and mount in the discs in their positions in order to measure the toe. However, when doing so, it is essential to check beforehand that each of the two spindles have the same number of spacers: this is the only way to ensure that the distance between the discs and the centre line of the chassis is identical and, consequently, the measurement will be correct.