Go to the smaller front wheel. I know lots like the look of the 21", but you get more rubber on the ground with the smaller front wheel, there is also more choices of tires. If you can not find a fatter 21" front tire maybe somebody on this site might trade staight across. Good luck.
Buckeye, Arizona(USA) 2011 Victory Cross Roads, Black police bag guards, black engine guards, black handle bars, Triumph Tiger mirrors, Triumph hand grips, set speedo/tach back 5" , adjustable timing wheel, Lloyzz Fuel Programmer III & air filter. Modified exhaust, made stock into 2 into 1. MRA windshield, Rotated front fender forward,relocated ignition switch, Bad Ace Fuel Tank Risers, Fat front tire.