Not abnormal at all. 10,000kms is what i got out of my rotors across 3 different samples (Revos). But I have a lead foot so keep that in mind.
In PAK, very few know the spec for Advics rotors. There is a way to put them right. As for why they go, you are correct. It is not normal. The fault lies in how much they fade under heavy braking. That amount of overheating will end up in warpage however you cut it. The pads & rotors will get cooked. Also, most forget that 'facing' a rotor involves not just the rotor surface but hub face of the rotor as well. Rather interestingly, thats the most critical part. Anyways, once you have warped a rotor by sheer amount overheat cycles and fade, they are gone/cooked/toast. Don't bother with it. Find better rotors.
