i would think the cost and variety of a 16" tire would be better than a 17" tire. i'd go with a 16" and a little bit fatter tire since your tires help absorb some bumps.
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El Pendejo Loco
2002 Suzuki Hayabusa
1507 "dry" block
Brocks megaphone
Spencercycle 10" swingarm
MPS auto shifter
Hays convertible clutch
Yea, that about sums it up...