How We Test Alignment

Toe-in/toe-out The wheels’ oblique alignment in relation to each other (horizontal line).
Out of square The axles’ oblique alignment in relation to the truck and trailer’s centreline (horizontal line).
Camber Another word for wheel inclination (vertical line).
Caster Another word for axle inclination. Axle inclination refers to the inclination of kingpins forwards or backwards.
KPI The sideways inclination of the kingpin.
Toe-out on turn (TOOT) The difference between how much to the left respective to the right the front wheel turns in a cornering manoeuvre.
Maximum turn The upper limit for how much a wheel can turn during a cornering manoeuvre.