Learn from my mistake, don't buy cheap brake pads (WearEver Silver, etc.). I put these on my girlfriend's 200SX and 3,000 miles later I was replacing the pads and rotors. These WearEver Silver's were too hard for her rotors and only lasted 3 months. It was the oddest thing I've ever seen, it looked like the metallic flakes in the brake pads bonded together to create hard spots in the pad. This caused them to groove the rotors beyond resurfacing. Funny thing is, they never made a sound until they had tore the rotors to shreds. I thought if this happened it would be a gradual thing, not so.
Tomorrow I'm sending the pads and rotors to WearEver to have tests done to see if they'll replace the rotors their pads tore up. Not only did they tear up the rotors, they tore up themselves. There were even nasty grooves and holes in the brake pads, strange. You can get bad batch of anything, rather it be thermostats, brakes, etc., and I think this is what happened. 3 out of the 4 pads were grooved, had holes in them, and had chunks of shiny metal sticking out of them. All this and the new crap pads never lost any thickness.
No, my girlfriend doesn't drive like an idiot so I know she didn't overheat and crystallize the pads. We live and drive on flat roads.
My question, what the heck happened to those brake pads?