If you are just having problems with rubbing, why not roll the fenders. It has been discussed on this forum before, just use the search function. Much easier and cheaper than changing spring pads. Just a thought.
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Bart
1987 300SDL-T
1985 190E 2.3-16
1984 280GE Cabrio
1978 240D
1957 220S(running one day, I hope!)