HI ,EVERYONE! I have owned a crossfire coupe 2005 now for about two weeks.After reading the forums here ,I decided to replace the tires and steering damper on the car .I finally got a chance to take it up the freeway today and was quite pleased with the car until reaching 75 mph, At this point a whine from the rear of the car started making it self known.There was no vibration of any kind just the whine.I went back to the forums and discovered this is caused possibly by a bad differential.Like many here I am recently retired and ,im not a wealthy guy!The car is emmaculate otherwise and friends have asked if it is a 2011 new model of some kind.My question is this, should i sell it? drive it as is or is there a fix for this problem that wont cost a arm and a leg?The car has 32000 miles on it and every thing otherwise operates perfectly on the car Respect to all, Drue in Tucson