We have had the exact same problem on my Wifes Crossfire. We are in Minnesota, and have not driven it much this winter. We took it out last Sat. and it felt like the back end was going to fall apart. We were not able to go over 30-40 mph untill we had driven it for about 5 miles or so. Then it seemed to be ok. I tried it again a couple days later and no problems at all. It does seem to be related to either cold weather or lack of driving it, as this happened one other time in December, and I just thought it was because the tires may have had flat spots in them from not driving it for a long time. Now I am wondering if there are some other problems. I haven't driven My crossfire since sometime in December, so I don't know if mine does the same thing. I can't try it now because it is snowing, but I will try mine as soon as the road are dry. I will keep everyone posted as to the results.