Cars that have been lowered more than ROW M030 ride height run into bump steer issues. The RS upright have a shortened tie rod mounting point to compensate for the ride height. Factory ride height on RS cars was 50mm lower than US spec car and 20-30mm lower than Euro spec. This is the proper way of dealing with bump steer on standard 993 cars. RS type tie rods are required. Geometry correction – The distance from ball joint and wheel mounting point is increased correcting lower control arm angle when lowering.