when in doing a few high speed runs or maybe 1 at a 110mph speed i hit the brakes not hard but to slow down i start to feel a bad shake. but nothing when driving normal at all. they seem perfectly fine with no shimmy/shake at all. only after going a high speed like that. im trying ti figure out what is so i can get this issue solved. i have oem rotors and pads. im honestly not sure how old they are because i just got the car about 3 weeks ago from a dealership. its a 01 with 50k miles. any input would be appreciated. thanks

 

That's most likely the front brake rotors warping during high heat conditions, such as trying to slow down from 110.. I used to have a shake similar to yours and replacing the rotors cured the issue for me.

 

visual check the rotor, most likely from an out of balance rotor.

i hope you are doing your speed run in a track environment

 

fat joe, thats what im thinking it is. and yes these are in a track invoirnment. what kind of rotors would you suggest to upgrade too. i was thnking powerslot slotted rotors all the way around. nothing to crazy just new rotors and why not upgrade.