Date registered: Feb 2015
Vehicle: 1995 SL320, 1995 SL500 ("Red Devil " project), 1998 C280, 2004 E500 4matic
Mentioned: 1 Post(s)
Quoted: 252 Post(s)
Well, for what it's worth, imo, on a properly maintained car, that is rust free and driven frequently, where visually no corrosion on the calipers, I would not hesitate driving it anywhere. Brake lines would give out before the calipers in most cases.
Now, to the calipers, since the rebuilt calipers are usually out of stock in most auto parts places (Brembo or large ATE SL600 for 320mm rotors), there are rebuild kits available for both. Brembo kits about $40 per caliper, ATE are about $70 from what I remember. Many many many years ago I worked for ATE Teves Automotive (now Teves Continental), and have become very familiar with the calipers. That factory provided calipers for Mazda, BMW and Ford of Europe.
Assuming there is no physical damage, once the core caliper disassembled and fully cleaned up, its just the matter of few seals and bushings to be reinstalled carefully. Refinish in the color of choice (preferably powder coated prior to assembly) and good as new.