Yeah all the pics are of the rear drivers side and passenger side. The drivers side is where I think I hear the noise. Do you know where the parking brake drum is located? How hard a job was it for you to do your calipers? If I did my calipers I would do the rotors and pads at the same time.

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1993 Benz-190E-2.6 liter

Just did mine on my 2.6 w201, rears take all of 20 minutes if you've done any brake jobs before, probably 30-40 if you haven't. The uneven wear could be a result of the caliper needing a rebuild, again that isn't difficult if you're half/sorta competant. The discs do appear to be at wear limits and don't appear to have seen an easy life either. Iirc it's a 4mm hex on the drum and a 17 or 19 pair of bolts holding the caliper on. You'll see the parking brake shoes under the disk behind the hub when you pop them off. They look to have been there for a while so you'll probably want to take the caliper off and apply your favorite penetrating oil to the hub flange and the area inside the lug bolt holes to loosen years of rust up. If you find your calipers are in good shape, you'll only have to crack the bleeder and compress the pistons back down before you put your new pads on.

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1993 190E 2.6 Sportline

Ive never done brakes but that all sounds good. Thanks for including what tools are needed. I figured it was a 4 or 5mm hex since that was the one my set was missing.

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1993 Benz-190E-2.6 liter

The parking brake is inside the "hat" portion of the rear rotor. That part sticking out in the middle of the rotor is essentially a drum brake. Here's a hint for removing the rotors - don't set the parking brake!

I wouldn't bother to rebuild the calipers; I don't think the uneven wear between the two sides is significant enough to worry about.

I would replace the flexible brake hose if it has not already been done. About a dozen years is the longest I care to let them go.

Thanks for all the responses. I will update this thread once I get started on it next week.

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1993 Benz-190E-2.6 liter