What is toe in and toe out?

Toe – in and toe – out refers to the inclination / tilting of the front end of the front wheels from their axes.
Toe – in is when the front ends of the front vehicle tyres point inwards, towards the centre of the vehicle.
Toe – out is opposite, i.e. the front ends of the front vehicle tyres point outwards, away from the centre of the vehicle.
The maximum angle is generally limited to 2°.