The OMP WRC Steering wheel is a 350mm diameter wheel available with either smooth or black suede leather for the ultimate in grip, comfort, and control.
Video: Installing an OMP Wheels on an E46 M3
Video courtesy of Sean54 on YouTube.
With the WRC wheel you can also choose either black, red, or yellow stitching for customization. The yellow color ring at the top center is not only ideal for figuring out which way is forward when things get a bit messy, but it's also great for keeping tabs on steering input when data isn't available.