Busamedic I would never tell anyone not to build your bike the way you want to. But saying that a 240 on the back will handle just as good as a rounder profile is bad advice. The 240 is what a 40 series tire?? that means it has less profile and is a flatter tire, so yes its easier to run side to side but has less lean angle. I run a 190/55 on the back of my B king and at stock height I drag the pegs and run the 120/70 front tire to the edge. It is impossible for a 240/40 to handle a curve like a 190/55, there is just not enough meat on the sides to support the lean angles.
I had a M 109 that had a 240/40 or 240/35 I cant remember for sure. I ran that tire to the edge and ground pegs, and frame and exhaust, but I was not ever even close to half the lean angle that the B king will achieve. The true road race bikes are narrower then the B king, which is as wide as a busa, they will lean ever farther because they can use the full tire before they drag parts. I can only use about 85-90% of a 190/55 and 120/70 before I am dragging parts.
Please build your bike the way you want to, I know it will look great cause I love how the slammed stretched bikes look. But please, there is no need to say that bike will handle like stock. Lowering it will not handle like stock, because you touch down easier, not to mention changing so many aspects of turn in. Stretching it will not handle like stock, longer bike is slower to turn, just the laws of physics. Wider flatter tire will not handle like stock, because of what is described above. Will the bike do what you want it to when its all done? I am sure it will, and a good rider on a long, low, wide bike can run as hard as a weak rider on a 1k. Just like my B king shows up many 600-1k bikes on the back roads, but I would never dare to dream that the Busa/king is in any way faster then those bikes in the curves.
I am no wana b road racer, I do love to road race, and I do love to understand and set up bikes to do so. Its my thing, just like I would never call anyone on here a wana b drag racer cause there bike is lowered and stretched and they went to a drag strip a few times. Most people cant ride there bikes to the bikes full potential, I still cant and I have been doing this for along time. That is why most people never really notice a change when they go longer, lower, wider, there still riding withen there means and the bike just doesnt have any extra to give. Give me one of these lowered, longer, wider bikes, and I will bring it back to you without peg feelers, but I will still be slower then if I was on my b king.
Ask any of my guys that I rode with when I had the 109, I would work the holy hell out of that bike. No matter how hard I rode it, no matter how perfect my lines where, no matter how close I was to the very edge. They would just walk around me at will because they had to much extra room to play with.
