QUOTE(Tron20 @ Apr 8 2007, 07:54 PM) [snapback]428637[/snapback]
I've had squeeking brakes on my lexus GS300 sport before, and after replacing the discs and pads for oem lexus parts. You may find that upon closer inspection of the shims that the inner shims have a black paint/coating on them, and that they are rusting underneath. If they have a bubbling effect on them its likely its rusted and theres an air gap in there. I simply scraped off the loose paint and cleaned the shims up with scotch brite, and it got rid of my squeeking. The other alternative is to buy some from toyota, but they aren't cheap.
I too had tried everything else before hand including using loads of copper ease/slip between the shims and the pads, and was still getting the squeeking, so I changed the pads, let them bed in, didn't work, changed the discs and let the pads bed in, didn't work and alas it was the rusted shims.
The next thing I need to solve is the stupid clunking noise my brakes are making when turning with my foot on the brake. I still think the disc to hub mount design is useless, most other cars have the discs fixed to the hub via bolt/screws, not just the alloy wheel and its nuts. I have been able to prevent the clunk before, that was by bending the caliper to pad mounting shims so they were holding them in snuggly, but even though they are still snug they clunk now.
Paul
Hi I had the same issue. All the pads were tight against the clips. What I found out was that the clips support the pad by stopping movement by hight and width. The srping for the width and hight were the wrong way round (overlapping wrong). So I change the way the overlap in each clip aand the clunk is now gone. Even when I reverse and go forward again. Problem fixed.