Greetings from "sunny" Westlake Village, Ca. My 2011 Deep Sea Blue/Ivory White Z435i is in the garage today, waiting for our good weather to reappear. This is a great forum with lots of interesting content. The Z4 is my second BMW, I had a 2008 335i first. That car was perfect. The Z4 is developing a lot of creaks and squeaks that seem to be coming from the junction of the top and body behind the seats. I expect that a dry lubricant would take care of the problem, but don't know if that's so, or what to use. All suggestions welcome! Happy Holidays!!