The techart springs lower the car equally front and back, but the Cayman does not sit equally on its springs (front a little lower than rear) and the lowering makes this more pronounced. The ride w/ the standard shocks was poor due to harshness over every bump. I would not do only the springs again but either springs and sport shocks or a system like PSS9. I didn't consider any wheel other than the Techart Formula for my Cayman.