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

pulsating is warped rotor.

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joel

Prayers bring forth enlightenment.

If it was a warped rotor, wouldn't they pulstae whether cold or hot, and not just one or the other?

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1989 300E 144K

commercial/consumer grade Brembo bits are crap..

Also, one more nod for Not turning brake rotors... You'll bring them down beyond the minimum spec... Don't go cheap on brakes..it's not worth it on a multitude of levels..

Jonathan

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Blue Ridge Mercedes
Jonathan Hodgman
http://www.blueridgemb.com/
Enthusiast Service, Restoration & Tuning.
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Located in the Atlanta area
Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines.
Mercedes Repair Atlanta

Very correct, the rotors need to be replaced and not resurfaced for these cars. I like the ATE ones, they are good.

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)

I thought all Brembo stuff was good, but I guess the cheap price should have clued me in.

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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