As the title states applying the breaks at speeds higher than approx 60 mph causes the steering wheel/ car to shake.

Under all other driving conditions breaking/ driving is normal.

any help is appreciated.

 

Have your pads/rotors checked by a shop or do it yourself if you know what to look for. Either one or the other is shot, or both.

 

^+1. It sounds like your brake rotors are warped.

 

control arms?

 

Lets not over-complicate this prematurely.

 

fair enough, but wouldn't the OP feel pulsation or whatnot even at lower speeds if it was a warped rotor or uneven brake pad deposit?

Although, it would help to know the miles of OP's car. If it's new, it's most likely not the control arms haha

 

Check that the calipers are sliding on the posts smoothly. That is the problem with my car and it exhibits this problem. It feels like the antilock brakes are engaging when you hit the brakes.

 

thanks guys, bad rotors... now i have another reason to get new sets, damn rust.

 

Glad we could help!

 

Just for my own knowledge, what was 'bad' about them? And how did rust play a role, since I would assume every time you drive it the rust would be sloughed off under normal braking?

 

The rotors are warped, meaning the surface is not flat, that's why on hard braking, the car shakes. If the rotors could be re-surfaced, then your good to go. No need to get a new one.

 

Don't resurface the rotors, you are just making them thinner and they will warp again, quicker. Get some white box rotors (China) if you don't want to spend OEM prices on parts. I get them for $60 each and they are just fine for the track also.