Couple things to check:

- If rotors have a darkened area, uneven surface appearance, then overheating or burned-on contaminants might be the cause.

- Not meticulously cleaning the hub face and completely cleaning off the coating on new rotors will affect the way they seat, causing eccentric rotation. This leads to uneven wear and poor braking feel.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7