Help With Tire sizes

Seeing as my Warp 9 SM rims are the wrong size (see thread below)...and my R rims now have dedicated dirt tires...I need to buy some dual sport tires for daily use. I’m going to order some Sava MC23 Rockriders,. They’re cheap, but do the job. I’ve used them before and am happy to use them until my Warp 9 problem is resolved.

I don’t want to f*ck up tire sizing with my R rims...so my question will these work:

Front – 90/90/21 (oem 80/100/21)

Rear choice between - 110/80/18   OR   120/90/18 (oem 120/80/18)


Ps. I’m at work and have limited internet access so can’t spend time searching for previous threads. I need to order new tires today.

I just remembered the AC10 rear is 120/90/10 & fits fine with minor rubbing on the mud guard protecting the shock....so I’m guessing the Save will also fit?

Still not so sure about the front though.

Front is fine.