I recently fitted new front brake linings (7”) to my daughters 1960 948, but they screeched, and juddered badly even after a few hundred miles. I took them off again and found that they were only showing contact marks on the first inch or so of the leading and trailing edges. Coincidently, a wheel cylinder had leaked – soaking the new linings, so I ordered a new set of linings and thought it might be a good idea to get new drums too. I decided to order from another supplier in the hope that the newer linings would be of better quality. Unfortunately, the same make of linings arrived and I thought I might just offer them up to the new drums to check the fit. I found that only the leading and trailing edges were making contact and there was a gap between lining and drum that increased to about 2mm at the centre. I also checked these linings and the previous set against the original ones and could easily see that the curvature of the metal part of the shoe was different – a wider radius. Giving the problem with the first set I decided to sand down the ends of the new linings until the centre portion made contact with the drum. On fitting to the car I now discover that I have no spare adjustment – adjusters wound right up and drums still turning.
It has been suggested by my suppliers that this may have been a bad batch, but I would advise anyone changing their lining to check the new ones against the drum before fitting them.
I’m now going to see if there are alternate makes available or get my very original shoes re-lined.[frame]

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