First off why does et stand for offset? Also what is high and what is low? I bought some RS6 wheels that are 18x8.5 for a possible mk5 and I would lower the car so that may cause rubbing...Im rubbing on my current car. Also what is with spacers and all this? Wouldnt spacers push the wheels out further which would cause more rubbing? I dont know what the offset is for these wheels they havent emailed me back yet.