Need A Rotor Diagnosis (pic inside)

[KAA]

Where are you feeling the shake ? how old is the brake fluid and what grade ?

On the road course under very hard braking, say from 110 to 50. It starts doing it around 60 mph as the car is slowing. I put brand new Wilwood 570 fluid in before my last track day and it did the same thing.

[paul67]

If its doing it after some use it might be the wheel bearing heating up , coming loose and causing the disc to shake.

[sinned]

TV from the track day excursion. Your trip to the 1/4 sent rotor temps high enough during the back side stops to burn off the material (hint to guys with "warped rotors"; heat up till they glow and allow them to cool naturally, it burns off the excess material).