I'm looking for some inputs on how I should proceed regarding a maintenance issue with my 06 RRSSC and the dealer. The issue I'm continuing to have is that the RR is that starting at 45 mph my steering wheel starts to shimmy. It continues on and gets to be especially bad around 55 mph. I've addressed this issue with the dealership in Cary, NC several times and continue to receive the same answer. They keep telling me that my tires must be flat spotted and that is the cause. So two weeks ago I had new tires put on the RR. I chose the Hankook Ventus ST and had the road balanced and the alignment done. Still the steering wheel shimmies. I talked to the service manager at the dealer this afternoon and told him that I'd be bringing the RR up once again because the shimmy is still there. I filled him in on the new tires and the first question was what tires I had put on and who did it. I told him and he in turn told me that Hankook was not an approved tire by Land Rover only the Michelin or the Contis. He did tell me that they have had good luck with the Toyo's as well but since the Hankook were a lot harder Land Rover didn't approve of them. He told me to bring the RR back up and they'd "take a look at it again." Quite honestly I'm getting sick of being told its flat spots and the run around on this issue. Cary is an hour drive and the next closest dealer is in Charlotte almost two hours away. So I'm between a rock and a hard place. What would be a good course of action for me to follow? I still have 1K of basic warranty left and then the extended warranty as well. I don't know if I should go straight to LRUSA with this or what. Any inputs would be greatly appreciated.