Rear or front wheels??

I have the same on my R129. It's just the front wheels and worse on the left side. I've fixed this several times. It seems to appear every spring when I take the car out of the garage. ..

My problem has been what Steve is describing. The heat shield is bent in some way. A little agresivity, bending and hitting makes the problem go away. (This doesn't sound like Mercedes, does it!?)

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Emil Österman, Stockholm - Sweden

MB SL500 -93 - Silver
MB 230CE -84 - Silver
MB 230E -82 - Yellow
MB 180B -59 - Green