What is a gold steering wheel in multi-player?
Various FAQs claim that you get the Gold Wheel display for "playing with the wheel a lot", but give no more detailed information.
However, the outcome of this discussion as well as this thread indicate that the following critera need to be met:
- You have to have raced at least 100 races.
- You need to have used Wii Wheel as your controller more than 50% of the time.
That last link is on the official Mario Kart Wii forums and cites the official game guide, so it seems pretty trustworthy.