johsti1

When I brake hard at high speeds(over 60mph), the car has a noticable shudder or vibration. Could this be warped rotors, or an alignment issue? What could it be? Thanks

plug1

...if your dealership is nice and you're sitll under warranty, you can get em replaced for free. I did, anyway.

SuckerPunch

<ul><li><a href="http://www.stoptech.com/whitepapers/warped_rotors_myth.htm">http://www.stoptech.com/whitepapers/warped_rotors_myth.htm</a</li></ul>

plug1

I had the exact same symptoms and replaced my rotors with the A8 upgrade, problem solved.

SuckerPunch

the point is rotors rarely warp, but get it fixed either way

plug1

for sure.

johsti1

The front and rear rotors are oem. This was all done under warranty. I think the rear rotors may have just been machined, and not replaced. Immediately after, I had the stock pads replaced with EBC greens. I'm wondering if a) the EBC pads warped the rotors b) Audi should have replaced the rear rotors instead of reusing them, or c)what suckerpunch posted (the link).

SuckerPunch

unless you have the old pads, yes it can happen very soon in rotor life by not breaking in the pads or over heating them