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Weekend synopsis.
Definition;
Original condition: Aftermarket wheels in the orientation that was causing the original vibration.
Action 1: Jacked up car and made sure aftermarket wheels were seated properly. No abnormal wobble was observed when wheels were rotated.
Action 2: Put stock wheels back on. Drove it up to 85mph. Smooth as butter.
Action 3: Put aftermarket wheels on except put back wheels on front and front wheels on back. If the rear wheels were out of balance, the vibration would migrate to the steering wheel. Vibration was much less than original condition, almost entirely gone. There was still a decent amount of vibration above 90mph.
Action 4: Rotated wheels again, back to original condition. Vibration was the same as after Action 3. Vibration did not migrate, wasn't as bad as original condition, and decent vibration above 90mph.
Hypothesis: I don't think its the wheels, given the above conditions. Would the wider wheels and tires amplify an issue with alignment? Since the stock wheels showed no vibration, maybe the alignment isn't that bad but with the wider wheels and tires maybe I'm able to observe it better?
Any other thoughts? Might try different hub rings.
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