Does the kart setup need to be changed between qualifying and races?

The decisive assessment is made on an individual basis and it depends on the track you are racing on. Generally speaking, one does not use the same setup for timed sessions and the race. In qualifying, compared to the heats and the finals, a slightly longer gear ratio can be used because you have the new tires that allow you to have more grip. To make the most of this, we try to optimize the setup by loading the caster. With new tires the rear generates more thrust and can cause handling issues with the steering and the front in general. Adjusting the caster, modifies the balance between the front and rear axle allowing the kart to have more grip at the front when entering a turn