I have a set of H&R lowering springs for a 200q20v (P/N 29800) here. I know they physically fit an Ur-S4, but will the additional weight make this a very bad combo, or will it be just fine? I'm thinking it won't work very good, but I'm not sure.. The Ur-S4 weighs an additional 180 kg.. -- MVH Eyvind Spangen