my cossie was doing 10 miles to 10 quid over winter last year,,,,,,, also kept wearing out the brake pads on the rear too
stu sugested the rear calipers where seized but i chose to know better and changed the engine temp sensor in the head,,,,,,,,,, after changing the rear pads for the 3d time cause the last ones lasted 6 weeks i then decided to looking into the calipers,,,,, guess what,,,, there siezed
moral of the storey,,,,, listen to the experts