All the vehicles are characterised by particular geometric angles of the wheels, established by the manufacturer, with the aim of optimising performance. The main geometrical angles are: Camber, toe in and toe out.

Operation consisting of creating or modifying a tread pattern by removing part of the rubber from the tread area using a hot chiselling tool.

Term used to indicate the complex of hollows (grooves and sipes) in a tread pattern.

Height of the carved part of the tread, measured from the base of the groove.