Originally Posted by KingZee

this makes me very curious. I noticed vibration after installing H&R spacers as well, thought it might be the spacers but dismissed it to being brake build up or slightly warped rotors. I have a feeling spacers have something to do with this. I don't think mine are direct bolt-ons either and since the vibration isn't that bad and I don't have any vibration at high speed I'm living with it right now.