[chopper]

Wilf:

Forgive the ignorance here but, considering that the calipers are fixed and have pistons on both sides. what difference does it make if the discs are perfectly centered in the calipers? I mean, assuming that the disc is reasonably well centered, the pistons will merely adjust to the disc position. I ask this because my calipers had no shims, and the discs were just slightly off center (a couple of thousands, just barely noticeable to the eye). I can see that it would make a difference when you get down to the last few thousandths of the pad material; in that case, one side would wear out completely before the other. However, I've never changed brake pads because the pads wore out, always because the calipers started peeing brake fluid out the seals and contaminated the pads. My old Vette, with stainless steel sleeved calipers, usually required piston seal replacement every two or three years or they would leak. That's what happened this time, too; the caliper seals started to leak and then the pads got fluid on them. I've had several cars with fixed caliper disc brakes and never heard of shimming the calipers to center the discs. Am I grossly misinformed?

Jon Miller:

Forgive THIS ignorance, but who is CWI? Do you have a point of contact and/or phone number? That is a nice installation; seems like a good idea to be able to routinely lubricate the carrier bearings.