well then either way, 5.5" across will fit a 200 tire and in the swingarm
maybe you should check with BC, I'm sure they can answer your questions
http://www.british-customs.com/british-customs-bonneville-america-speedmaster-wide-wheel-kit.html
it would suck to be a half inch too wide, can't tell from the pics just how close the tire is to the chain

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