I have e7 and am having problems. I have changed both my front and brake pads to endless VN9500 but still using stock rotors. At high speed braking, I feel a jutter on my brakes. Do any of you guys have similar problems?

I know the best is when changing to high performance brake pads, you change rotors as well. But I would like to know about the stock brake rotors.

If you guys/gals have any other problems related to stock brake rotors, please share!