Preparing used brake rotors for new pads

[JWC86]

I replace rotors when they reach the minimum stated thickness and they'll go though several sets of pads before that happens. I see no reason to replace them prematurely just because.

Same here, 3 or 4 sets of pads on HD truck rotors no issues.

 

[Urshurak776]

I usually just spray the old rotor with brake cleaner, give it a few scrubs with emery paper, then throw the pads on. If your rotors are warped, nothing besides resurfacing will help.,,,

Same. Never had an issue doing this.