I have vibration in the seat when on the highway traveling over 65 mph. I've gotten an alignment and balanced and rotated my tires recently. Tires have plenty of tread on them and seem pretty new.

So the only causes I can think of is either a bent rim, a bad tire, or possibly even the rotors could be the cause?

 

Start with tires get a road force balance done on the car, that should be able to tell u if its the tires or the rim.

 

Have you Lowered the car ?

 

Nope, completely stock.

 

Just found out I have a slightly bent stock rim which was the cause of the vibration.