Has anyone had an issue installing aftermarket 17" wheels on a 08 CTS? I had a set of Drag DR37's installed but the car immediately had a shimmy in the steering wheel. The tire dealer tried for a couple of weeks to get the shimmy out, but ended up putting my OEM wheels back on which solved the problem. They checked around and found that it's difficult to install wheels on a CTS. The wheels looked great on the car so I would really like to find a wheel that will work.