Q: My steering wheel shakes at freeway speeds, need help!?

Alright guys I am confused and frustrated. I have a steering wheel vibration at about 75mph-80mph. I believe I have tried everything with no results. I have had my wheels and tires balanced by 3 different reputable shops including a road force balance. I have had an alignment done and everything was able to come back to spec. I run after market wheels and have had them professionally checked for bends and they are all good. I have the correct centering hub rings for my wheels. The dealership has also checked all my suspension components and bearings twice and everything checks out good. I also just installed brand new rotors and pads. Non of this has helped, it still feels like one of my front tire is unbalanced. Everyone tells me my tires look decent that they dont need replacement. Although they have mentioned that the front are slightly cupped! Which pretty much proves that there is a wobble! Anybody know what might be the issue?

My car has 55000 miles.
My car has an automatic transmission.