Just had new front rotors and pads installed on my 1987 420SEL with 160K miles. All was fine for the first 1-2,000 miles, but now I have bad shimmy when the brakes get warm, and even a little shimmy when they're cold.
I question the knowledge of the brake shop where I had the work done. They say it's very difficult to tell which wheel is at fault. It feels like one of the front wheels to me, but the shop guy says that doesn't necessarily mean anything.
I'm scheduled to take it back to the shop for work on the brakes next week. Is there anything I should look for to be sure they're fixing things properly?