Kingpin Inclination (KPI) / Alignment Tips

Kingpin Inclination (KPI)

Kingpin Inclination (KPI) is a designed alignment angle of typically five to six degrees from vertical. If vehicle handling becomes a problem, the kingpin may be positioned at an angle other than standard, suggesting a loose, worn pin, or a bent axle. If ignored, this condition could result in irregular treadwear and severe steering and handling problems.


Alignment Tips

  • Monthly visual checks for irregular treadwear patterns are suggested.
  • Be aware of gradual changes in vehicle handling.
  • KPI, bearing adjustment and other suspension elements should be checked at regular intervals.