I was thinking the same question for my car. I put on Brembo rotors a while ago. They are OK when cold but start to pulsate when they warm up. Are they just junk that should be replaced?

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1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma