Still have not determine source of problem - taken into several service centers for analysis. Problem only occurs when driving with one or more passengers. The true symptoms are that the right front wheel feels like it is dragging due to being loose and wobbling or the bearing grabbing. Problem is - this does not happen when driving solo (which is one of the service center diagnosis problems as I did not notice that originally) and it also disappears once you get to a constant speed. I have check lug nuts and surface of tire for signs of tread separation and have not found any signs of problems. Any suggestions would be appreciated - I wondering what to do next except run til final failure.