Hi! I got a 2005 Rio Cinco that I bought new. At 3,000 miles, I noticed the steering wheel would start to shimmy and shake some at 65 MPH. I took it to the dealer who balanced all four wheels. The car still has the shimmy and it has gotten worse as it now starts at around 55 MPH. Anybody have any ideas on this? If it's not the balancing could it be a wheel bearing? It's going back to the dealer on 9/27.