Good thoughts Franklin. Actually the Phoenix is up over 280 MPH now. The problem with adapting any non-motorcycle designed tire is that the tread is not contoured for two wheel use. By that I mean car tires have a flat profile since a car depends on track width for cornering. Bikes need a curved surface to roll over onto when turning. Yes, I realize Bonneville is a straight line event, but you would be amazed at how much correction is necessary when under power. At 370'/second, you need to have very soft imputs for steering. A flat profile tire tends to be very abrupt. Maybe I'll build a twin-engine turbo Busa with car tires to try it. Wanna ride it Steve?