Also, how many miles should I be getting between brake jobs. Seems I get about 12,000 miles before I need it. Should I expect about 18,000 to 25,000 miles? I do alot of stop and go driving, freeway and long commuter traffic.

EDIT: You don't need a second post for this, especially since you asked the same question in your other thread. Any input please go to http://www.automotiveforums.com/vbulletin/showthread.php?p=5972849 to avoid the possibility of two discussions starting on this topic.

You get 50,000 miles on the front pads! Wow. Best I've done is about 16,000 miles. That is why I suspect a problem. But car stops straight, no pulling and very firm "grip"- not spongy when brakes applied. I will pull the wheels off and measure them every two weeks to see if I can see a pattern. Thanks for the input.