I have a terrible vibration/ rough ride, it occurs at almost any speed. No road feels smooth it's always bumpy. The wheel shimmies about 35-38 mph, then goes away and doesn't come back until about 75. Is this how it's supposed to feel?
I took it to the dealer and they did a rotate and balance. Took it back two days later they claim they checked every thing else and didn't find anything.
V6 premium w/ pony package and 17" stock wheels and tires that came with it. I did put in nitrogen in the tires, not sure if that makes a difference?