One of our Cooper's did the same thing on the right front, turned out to be a terrible balancing job. I checked the shocks and they were fine. Had another shop rebalance them and they were terribly out of balance, we were able to get most of the vibration out but they didn't think the tire would straighten out on it's own.
Moved it to the rear and will probably leave it there. I notice the vib but no one else seems to.
98 2.5L 5Spd - [url=http://www.jeepforum.com/forum/f22/then-there-were-two-481115/]Build[/url]
99 4.0L Auto - Details in Profile