warped rotors?

[Adam]

You can usually feel warped rotors through the brake pedal and steering wheel when slowing down. Do you still feel something now or has it gone away? If it's gone now, then it's something else. Rotors don't warp then go true again. The brake system on your boxster S should be able to handle what you described just fine without warping.

[choeglund]

Check your lug torque to make sure everything is tight. If you still have pulsing in street driving then good chance you need to replace the rotors. Do the pads at same time.

[skip_168]

Pull the pads.. depending on what kind u have, u might have glazed the pads over...