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.
- 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.