Dealership in NC or SC or thereabouts makes all sorts of videos on CFMoto stuff. Most is about CForce 500-600-800-1000 and modifications.
In short, 27" tires will fit 500-600 without rubbing. If you get heavier tires, go bigger, you will need 1.5" (or more) wheel spacers, and possibly a lift kit.
Heavier tires may require clutch mod depending upon what you want to achieve. They install AIRDAM clutch kits, and it is really not difficult to do. If you are reatively handy, have some tools and can improvise the long compression rod (use .5" or ,625" threaded stock) you can do the clutch thing yourself. There are many videos on YTube showing how to do it.
I have no idea how much $$ AIRDAM kits are. The AIRDAM kits are multiple-- meaning many different setups for what different people want to achieve. Example, you can get better power in high end for more speed, or better low end grunt for doing slow stuff (like snowplowing in L), and so on.
YMMV