A real honest to God Board Track racer of the day that was campaigned by the factories was running around 100 mph with 4 to 8hp. If you get the right tires and do it just once and get it on video you will be immortal! Lol. It would be really cool to make something so tight that it would safely perform to the 100mph bar. Bicycle tires are totally out of the question. You would need the real Coker Tire Co. replicas on replica rims. The tires are going to be the weak point of the chain. It's a shame that as far as I know no factory makes a skinny modern motorcycle tire. I wish someone here on the forum was a Grandson of the owner of Coker tire and convinced Granddad to make modern technology skinny tires for the resto builders like Us. I am working on a V-twin build in my mind to do in the future. I need to invest some funds in new equipment so I can go in different directions.