Kinematics and compliance (K&C) test equipment

Transforming information into usable data.

What is kinematics and compliance (K&C) testing?

Kinematics and compliance (K&C) testing is a specialised form of suspension testing that involves applying real-world loads and displacements to a vehicle’s chassis and tyres. The goal of K&C testing is to ascertain the geometry and stiffness characteristics of the vehicle’s suspension system under quasi-static conditions. A K&C test machine provides a thorough understanding of a vehicle’s kinematic and compliance characteristics by applying simple but very accurate inputs. The resulting data informs on the vehicle’s ride and handling characteristics.

SPMM Plus Polestar

How the SPMM Plus works

The SPMM Plus has two key areas of measurement: wheel position and wheel force. The test vehicle is clamped to the table and suspension kinematics are analysed by moving the table to simulate the motions of the vehicle body that occur on the road. The resulting wheel centre movement is measured using our Dynamic Arm measurement system, whilst controlling the tyre contact patch loads to zero.

To measure compliance, horizontal inputs are applied at the tyre contact patch by the wheel stations. The wheel stations apply these loads by moving longitudinally (X), laterally (Y) and rotationally (δ). Forces and displacements are measured by the wheel stations integrated piezo-electric load cells.

Key features and specifications

The SPMM Plus features the finest quality components to ensure the highest levels of accuracy, coupled with easy-to-use software and an extensive range of options that allow you to tailor the solution to your specific requirements.

  • A unique moving body, fixed ground plane design
  • Exceptionally accurate Dynamic Arm wheel position measurement system
  • Low maintenance, servo-electric design
  • Optional Moments of Inertia (MoI) and Centre of Gravity (CoG) measurement capability
  • Hybrid simulation data pipe for HiL test capability
  • One-click data export to popular modelling packages such as CarMaker and CarSim

Get the SPMM Plus

"*" indicates required fields

This field is for validation purposes and should be left unchanged.
This site is registered on as a development site. Switch to a production site key to remove this banner.