arent hubcentric? I hit a pothole earlier and then hit massive traffic and could notice a bounce of sorts at up to 20mph then it dissapeared and came back on at like 75-80. Put the OEM wheels back on and Im pretty sure the hub for the ATS is larger than the OEM. Then again that was by finger measuring it and its completely dark out and raining. The bounce went away though, maybe I lost a wheelweight.
If the wheels are lugcentric just get the proper lug nuts and your fine . As for the guy who hit a pot hole and thinks the wheel moved . Your probably seeing a bent wheel . If the wheel is bolted down and torque correct lug/hub centric it should/would not move .