I'm running some fat yokes right now and was running some fat Falkens and have not experienced that. Have you looked to see if there is even minor fraying, rubbing, exposure on your wheel speed sensor wire? Is the sensor secure in the hub? My car had that behavior when my wheel rubbed through the wheel speed sensor...There was no coming back though (till I replaced the sensor).Interesting thought. Thought I had checked this before, but worth a very close look again.