In a chassis modification (suspension lift) of a Land Rover Defender the trailing front axle caster corrected changes. This only can be amended by corrected trailing arms. Otherwise the corner of the probshaft changes and there may be noises in the drive train. It could also come to a more spongy driving performance.

For armored or protected Land Rover Defender it should be developed trailing arms with 3° caster correction. The fact of the matter that the vehicles were extremely loaded in desert areas the modifictation gets not easier.