I bought my 520SX in June of last year. I replaced the rear brake pads somtime early this year (january or february). Well, they look mighty low again. I think I'm going to have to replace them by the end of the year, or very early next year, again. I am still on the original front pads. I don't even use the rear brake that much, mostly just for quick stops (locked), or for brake taps and brake slides (again, all locked). I use the front HARD, quite often hard enough to require me to back off the lever because my front tire is occasionally locking. I do not beleieve I am dragging the brakes, as I keep my foot fairly far away....the compression braking is generally sufficient for most slow downs for the rear. How often have you guys all gone through front/rear pads?? Like I mentioned...I am on the original front pads, and about ready to throw on my second replacement pair of rear pads....and this just seems backwards to me!!!