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Re: Sanding brake discs
It certainly sounds like the caliper isn't sliding on the pins and only the pads on the outer side are making contact with the discs.
Throughout the year are you having to drive in lots of standing water or muddy roads? It seems this problem might need you to check it periodically from now on so the caliper doesnt seize up again.
Also dont forget that once your car is fixed you will have double the braking force so go easy on the brake pedal the first time you press it or you'll be leaving tyre marks on the road.
Currently in Renoir White's garage:
Renault Trafic 1.7 Petrol Vauxhall Astra 1.4i & in bits Triumph Bonneville T140E & H-D XLH1200