Was the pad wear even between the two I wonder? - if not, it sounds like the caliper hasn't been sliding freely on the pins. The piston then addresses the pad to disc one side & could allow dirt ingress resulting in scoring the other. BTW, nothing wrong with OEM pads but do remember the brakes are linked effectively - see the unified braking system, page 3-27 of my ES manual - so pulling on the front lever applies a little rear brake.Hello,
I have a '16 ES with 14,100 miles... the rear rotor was scored pretty bad - rear pads were still in spec., but close to needing replacement...the fronts were less than 50% worn... I ride mostly on long trips, packed with camping gear- probably 80 lbs. + my 175 lbs... I have heard that longer distances with extra weight can cause greater rear pad wear... although I don't get why the rotor was scored. I had the rotor replaced and EBC sintered pads installed all around... the dealer did not have any ideas as to why the scoring, except the suggestion that I may have been riding the rear brake lever (not true...). I wonder if the culprit may be the original Yamaha OEM pads?
Thanks for any feedback,