Lateral Compliance Test

LATERAL COMPLIANCE, PARALLEL
The vehicle chassis is held fixed by the K&C rig center table while lateral forces are applied through each of the four tire contact patches, in line with the center of tire contact pressure. ‘Parallel’ indicates that force is applied through each wheel in the same direction (i.e. all forces to the left, and/or all forces to the right). Corresponding loads, displacements, and orientations are measured at each of the four wheels.

LATERAL COMPLIANCE, OPPOSED
The vehicle chassis is held fixed by the K&C rig center table while lateral forces are applied through each of the four tire contact patches, in line with the center of tire contact pressure. ‘Opposed’ indicates that force is applied through each wheel in opposing directions at each axle. While a lateral parallel test will capture the effects of left/right suspension connectivity components (such as the steering system, subframes, anti-roll bars, etc.), the opposed test, by nature of applying equal and opposite forces to left and right side suspensions – and thus “shorting out” any right/left connective components, will capture the effects of an individual suspension corner.
Corresponding loads, displacements, and orientations are measured at each of the four wheels.

LATERAL COMPLIANCE, SINGLE WHEEL
The vehicle chassis is again held fixed and lateral force is applied to wheels on one side of the vehicle. This allows you to measure the reaction of wheels on the opposite side of the car to forces.

Here are some characteristics that are measured in a Lateral Compliance Test:

  • Axle steer
  • Tire Stiffness
  • W/C Stiffness
  • Toe Stiffness
  • Jacking Forces
  • Camber Stiffness
  • Force-Based Roll Center (FBRC)
  • Height & Locus (Parallel Test only)