what is the concensus on how long the rear brakes typically last,yes I understand diff. driving styles come into play. I don't feel I use a lot of brake and im very conscious not to ride it due to stories I've heard with the nanny stepping in. but I was surprised to take my2012 rt-s in for sevice at 800miles to hear the rear brakes were getting low then tech said typically once year ,is this uncommon or the norm