After 18 months of fighting a low speed braking vibration I have FINALY found the solution. To get there I had the stock rotors turned with no luck, replaced every bushing in the front end, new wheel bearings, harrop bbk, even bought new hub centering rings from tsw. But never fail about 4 days after each item the vibration would come back. I had actualy given up... I stumbled into the soution purely on dumb luck... I need to replace the front brake pads. So I tolk the front wheels off only to find that one of those darned hub centering rings was cracked and no good. Well I have recenty bought a lathe so I decided to turn down a pair from some stainless tubing I had. BINGO!! Its been two weeks now and Not a HINT of the vibration..