The front breaks dont seem to work. Have gone through 4 sets of rear pads 1front

What is your question?

Replaced the front pads the first time @ 137000 mi the rear the first time at 154000 mi. Since then have gone through 4 sets of rear pads and none on the front. Now at 298000 mi rear gone again compleatly front still half there. Without rear breaks there are none front dosent work to hold when in gear.