Anything about rear tire size in there. The calculator is pretty accurate.
Show me some proof of 90+ mph with reed spacers, boost bottle, and stock front fenders. You can scan some timeslips, put a video up or something like that. Somehow, I think it would take a solid core rocket to do 90+ mph with the limited motor ability that would have.
right now i have18 inch front tires and 19 rear but when i did the 93 mph...it was when it was not mine..and ill ask the guy tonight what size tires......and they are not stock front fenders..they are maier race cut..