One rotor much hotter than other 3 - cause of vibrations?

[speedyspaghetti]

Originally Posted by thom4782

Here's a question...does the frequency of the vibration increase as the speed of the car increases. Asking b/c as the rotational speed of the wheel increases the time between the peaks and valleys of a warped rotor passing by the brake pads should decrease thereby leading to an increase in the frequency of the vibration.

Just a guess on my part of how the physics of a warped rotor translates into the feel in the steering wheel. My experience with an unbalanced tire suggests things could be more complicated in that I've felt stronger vibrations at speed.

Yes, the vibration does the worse at speed - I took her up to 85 or so on my way home today and the vibration was at a higher frequency. Thank you again!