I doubt they would fit and even more doubt you would turn them at all in anything with any resistance worth a crap
there too tall and heavy for the LITTLE HP the rancher has and its HIGH gearing from STOCK form, , them 30's will have gearing way too high to do your motor any good
unless you ONLY drive down hill with good wind at your back ! LOL
sorry, just being honest here
and also, sorry this is your first post here, not trying to be a ball buster!
Welcome to the site, we ARE trying to help you!