Some 2.2 tire I have used on my Fun Factor truck include the Ofna .21 Pirate 10s, Hpi Masher 2000s, Red Cat Volcano SV (1/8 scale having 1/10 hubs), Imex Claw Dawgs and Hpi Geolandars. For off-road the Masher 20000s are great and rallye the Geolandars work well. All of these except the Redcat will work on the Cen 2.2 wheels. If you want super offset, then Ofna Pirate 10 have the most I have seen.