nozferatu wrote:This has nothing do with the friction brakes being warped or A/C. It has more to do with the regen system and how it works.
It happens when the temperature is particularly warm so A/C is almost always running.
My guess is that when things get really hot, the regen system is less active and standard braking takes over. However, it's pulsed. This is the feeling I get...like it's a very very rapid and very mild form of antilock.
I also agree 100% it is regen related, however, turning the A/C on triggers the vibration. It is not the A/C system itself making the vibration, but something electrically is triggering this vibration phenomenon when the A/C is on. I do not get any of this vibration during regen with the A/C off, even when it's over 100 outside.
My A/C is usually always off, so for me, it only happens when I turn the A/C on and I live where it is usually always warm. In fact, it's been in the 90's to 100's the past few weeks for me. Also, I have turned of the "Auto Defog" feature in the setup menu so that my A/C does not automatically turn on even when it says it's off just to be sure it's off.