jbtz

Under medium-hard to hard breaking I can feel a vibration(all over the car, not in the steering wheel or the brake pedal) I got them just a few weeks ago and now considering going back to OEM plain.

Anyone else with this annoying issue or I did something wrong?

ECS sloted fronts, stock pads

2.7Twin

Did you properly bed the new rotors?

jbtz

Sorry, english is not my mother language; By BED you mean the the 7-10 "hard-stops" increasing seed with normal accelerating, etc.? Yes I did that; I also tried it again the first time I felt the vibration

ryoung

I've never had a problem with two sets of Alcon slotted rotors in the front and one set of Coleman slotted rotors in the rear.

My only thought is that perhaps there's some rust or scale on the hub that prevents the rotor from seating square. Perhaps remove the rotors, clean the hubs, and try again.

jbtz

Haven't thought of that, will try tomorrow

2.7Twin

amiss.

DoubleB

I bedded them just fine, used copious amts of ant-seize, antisqueel and even 'chamferred the edges of the Montex Red pads, as to not vibrate on the slotted ECS rotors(A8 sized)

THought maybe it was actually the rears...until I replaced them.

Next step, Turning Front Slotted rotors. Vibes R Annoying.

jbtz

Did you checked rusting/etc. on the hub as "ryoung" suggests (Worth looking into it)

Scotts6

Can slotted rotors be turned?

DoubleB

Yes, according to a local indy porsche, audi service center.