I just spotted this today.
When I push the car down, that hard rubber boot definitely moves very slightly.
What exactly does this tower do? Is this something I should really be concerned about (for safety reasons on the road)
....and COULD this be why my suspension is rubbing the top of the arch when I hit dips or carry more than 300lbs of weight on that side of the car? If this is a problem, could it be influencing that?