I have a 2005 LT about 20K on it. I am experiencing a wobble or shimmy in the front between 20 and 40 MPH around sweeping turns. I think I may feel it at freeway speeds but can't be 100% sure. The front Metzler tire has about 3000 miles on it. I checked the steering dampener as other have instructed in various posts and that appears to be fine. I also check for side to side and top to bottom wheel movement as well as tire and wheel runout. The only thing I can visibly see is very slight tire cupping. The last tire was cupped badly when I replaced it and I never felt this shimmy. Any suggestions?