I believe my 2009 stock is a Dunlop 180/70 which is about the same size as Dunlops 170/80. Strange that Dunlop does not carry the 180 in their catalog. I'll probably just go to a Metzler 880 180/70 when I replace. I briefly considered the Metzler 200 width or darkside Altimax HP but probably will not change whats working unless I get tired of yearly tire replacements.
Southern Crusiers, Chapter #6
2009 Vulcan 900 LT Red/Titanium
Kury Iso Grips and Throttle Lock
Cobra Guard w/Kury Foot Rests
Kawa Windshield Lowers
Cobra Luggage Rack
Wolo BadBoy Horn