The complete circle. No flat bottom, no cut away top, just 330mm of continuous rim, which is what you want the moment your hands need to keep moving around the wheel.

Rally, drift, historic racing and road cars all ask you to steer hand over hand. A round rim is the only shape that supports that without your palm finding a flat spot at the wrong moment. Aircraft grade aluminium spokes with moulded silicone hand grips, on a 6 x 70mm PCD bolt circle that matches the button hubs and quick releases most direct drive owners already run.