Jsn829

2008 s63 80000 on it. First time on the forum, but have read a lot of great info from here. Wondering if anybody can help. I have a slight vibration on the de acceleration mostly felt between 65 mph and 55 mph. I have had all four wheels off, balanced and checked on high end hunter balancers. Tires are a couple years old, but not much miles on them. I even went as far as using the spare at each tire location to see if I could get the vibration to change but it hasn’t. I don’t know if this has anything to do with it, but I also hear a slight whining noise on D acceleration. Suspension feels tight. Feels like it’s coming from toward the rear of car. Not sure where to go from here. Any info appreciated. Thanks!!