If its working well now you are right to simply use the car until it acts up again, at least that is what I would do.

It sounds to me as if you simply had a caliper that was sticking. It may be just fine until such time as it gets the pad worn down to that place again, and that might take years.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

The rear pads are puny, but easy to replace. My last set of rear pads lasted about 40,000 miles.

The first time, the bonded pad part seems to have come loose from the metal backing pad on one side. I took it to Mercedeshop in North Miami (no relation to this forum at all) and I got hit for something like $300: new rotors, new pads and other nonsense.

The second time, I did it myself. It took me about two hours and cost $60, including a change of brake fluid.

This forum has caused me to save a lot of money and spared me a lot of ripoffs.

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Semibodacious Transmogrifications a Specialty

1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)

"Time flies like and arrow, yet fruit flies like a banana"
---Marx (Groucho)