It is always the inside of the rotor or the inside pad that always wears the most. This is the side that has the piston on asymmetrical calipers (single or double piston on one side. The nature of the beast..

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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.