I was wondering how do you know the new tires you are putting on is the 3rd set? I'm owned my Crossfire since new in 2005 and I replaced the tires at 16,000 miles because I didn't like the tires on it and wanted a larger size. I now have 21,000 miles on the car. The issues you have, seem to be fairly common, that why I posted where to find solutions. This info of issues and how to fix them came from members on this Forum who have had some of the same issues as you, such as the ignition, leaky top, roadster top problems. Some have had those problems with low miles also. Has the back window of your roadster fallen out yet? I hope you can find a good mechanic to help you.