[Canadian ST]

Well about 2 weeks ago my front brakes were making a grinding noise, I just thought it was wet or I had some dirt in there or something..wrong. It got worse and since Ive been working like a mofo for the past month I was to lazy to inspect it myself so I took it to the dealership and found out I needed new rotors and pads for my 07 with only 38'000km on them :huh: I guess I got some gravel stuck up in the caliper and it killed the left rotor and pad. Well needless to say it cost $400 and change to get it fixed. The right side still had 85% brake pad life on it to boot. Is this common for these cars?