What causes the steering wheel to shake when braking? Typically does it when slowing from over 35mph.

Does it shake at any other times, or only when applying the brakes? If only under braking, then i would guess the rotors of the front brakes are a bit warped. Can replace, or if in decent shape, have them "turned".

If it shakes on & off otherwise, its most likely worn out bushings up front, tie rod ends, etc etc. HTH, Jeremiah

If it isn't warped rotors it may be in the calipers or pads themselves. If it isn't in the brakes (more than likely is) the tension compression rod bushings can also be a major factor.

Pull the front pads and look for any signs of odd wear. While you have the pads out have someone very gently apply the brakes (you might want to put a screwdriver or something between the piston and rotor so the piston does not come all the way out) just to be sure you don't have a piston that is sticking. If that looks OK, you might as well pull the rotors and have them turned or replaced. Clean and re-pack the bearings and replace the grease seal and if the problem still is there after all that, it's in the bushings. The lower control arm bushings could also contribute to the problem along with bad T/C bushings.

Like Jeremiah said, it could also be in the ball joints, tie rod ends, rack bushings as well. Might as well plan on spending an afternoon checking it all at one time.

Yea, Like they said. But I would start with the rotors . Good luck.