nvh

I am considering an aluminum or carbon fiber driveshaft (leaning toward QA1 carbon fiber), but I do NOT want extra NVH. It seems like swapping the driveshaft is a crapshoot when it comes to NVH. Some people get more NVH, and some people don't. I had a 2009 Mustang with aluminum D/S and no...

I have been experiencing rumbling & vibration between 50 & 70 mph, which kind of felt like the wheels were out of balance. After rebalancing them twice, the dealer even tried a different set of wheels & tires - no luck. They now believe that the drive shaft needs replacing - at 1100 miles...