Ford Repair: ford explorer, ford explorer, camber

Question
what makes the inside of my front tires wear

Answer
Kevin-

  In all likelyhood your alignment is off.  Whenever you have excessive camber or caster (forces that basically make your tire lean in and out) it tends to wear out one side of the tire much quicker than the other.  I'm willing to bet that the wear will stop once the car is aligned.  Hope this helps.

Steve