Mrbb, all my rims are 12s, was curious why from the factory they were different?
some of the honda atv's came with(some might still) 11 inch wheels, NO one really knows WHY they stuck with them so long, maybe just to be different?? or got a deal on a huge amount of them and refused to go to a 12 till; they used up there inventory LOL
IMO< most honda atv owners that HAD 11 inch wheels on them from NEW, when the time comes to get new tires, most all go to a 12 inch wheel, as then the options on tires you can run are a LOT larger pool to pick from, very few folks stick with 11 inch wheels
your atv might be on e of the few I mentioned above, that came from the factory with different gearing in front dif and rear dif, and the difference was designed to be run with a 1 inch taller tire in the rear!
so rather than have exact same gear ratio in both diff's they used a taller tire in the rear to make them equal!
so, seems like your atv need a 1 inch taller tire on the rear than from
ALSO< many folks that have atv's geared this way, still run all 4 tires the same size, and the reason being is that they run mostly in mud, and or soft ground that allows the tires to slip and NOT the gears
but this is a personal choice if you do so!
Honda designed there atv';s to be how they designed them, , if you wish to alter such, ?? just know what could MAYBE happen and make your choice that way!