Hi. I'm having the same problem with my mkII gs, but I also have a brake wobble and suspect my front discs need replacing. I've had the car for 4 years and the discs were replaced by Lexus Glasgow under Lexus warranty and then again under Lexus parts warranty as the first set only lasted about 10 months (approx 2500 miles).The car has now done 8000 mls on these discs and I was thinking about replacing them with Mintex discs and Lexus pads. Has anyone got any thoughts about this combination.