Last week I had purchased a set of new OEM 20 inch wheels, style 168 for my "05" 4.4 from a reliable Ebay seller. When the shipment arrived, the wheels were fine and not damaged at all. I then took them to my local BMW dealership to have Toyo Proxes ST ll's mounted. I have noticed when I increase the speed to approx. 45-55 miles per, I have a slight vibration in the steering wheel. Nothing drastic though.

What do you recommend? Could it be that the front wheels need to be rebalanced? I had stock 18 inch wheels prior, and never had any issues before. The vehicle currently still has its factory warranty until June, and then the CPO kicks in.