Chassis - learn more
The first part of the assessment is a visual check underneath wheel arches during the body inspection stage. It is usually possible to identify shock absorber and steering rack leaks, check some of the bushings for damage, sometimes find clear signs of previous damage as well as replaced suspension parts. Tyre wear pattern could also be a good sign of chassis condition and geometry.
The second stage includes checks to be performed on the road. This is likely to reveal abnormal noise and knocks. The important matter is straight-line stability, which is checked under acceleration, braking and coasting. Other potential issues, that are possible to be identified, are wheel imbalance and transmission vibration.
Most of the recently built vehicles allow their chassis to be computer-checked. For example, air suspensions are popular in top-tier vehicles, and this check allows to identify some certain crucial data such as an air pump’s peak pressure and temperature dynamics. This gives an excellent overview on the entire air suspension system condition. In case of adaptive suspension, it is usually possible to check adjustment values of damping coefficient to evaluate the degree of wear of dampers.
In case chassis failures are suspected, we can arrange an in-depth inspection in the local garage. While the car is lifted up, we can access and check almost all of the bushings, engine/gearbox/differential mounts, body and engine undertrays, driveshaft and axle shafts, CV joints, and track rod ends. Any oil or fluid leaks can be easily identified in this case. This optional inspection is available at extra cost which mainly covers the garage hire.
Sometimes we may strongly recommend performing additional analysis of engine/gearbox/differential/power steering fluids on certain complex-engineered vehicles.