I have a 05 Xterra with 35k and i have for some time now a vibration sound from mostly the rear when at a stop light. It seems to be more extream now with the more mile i put on it. And the cold weather seems to inhance it.. I have had it in the shop a couple of times and can't find what the problem is! I hear there are a few others out there that have this problem! I have 500 miles left on teh warrenty and would like to get it fixed!! Its getting really bad now! Any one out there have this problem?