Look at your brake rotors. Are they smooth, or are the gouged and scraped up? Look at or feel both sides, not just the easily visible side. If you have a bad caliper or plugged brake lines, you could have a dragging brake pad, bad enough that the friction material comes off the brake pad backing plate after a very short amount of time. Brakes are very easy to do, but you have to make sure you do them correctly. Brake lines are also really easy to do, and cheap as well.
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