I just put 20's on my trailer and think they look great. I'm just not sure about the clearance that i have with them. I've got about an inch from top of tire to fender, edge of tire to edge of fender i can barely get my finger in there. they are already rubbing on the inside(the carpeted piece from the trailer frame to the fender) I think i'm going to have to go with a smaller tire. dont' want to go too much smaller though. what do you guys think, any experience with this. if the trailer does not flex too much when going over rough roads, i think i should be ok, but want your advice. thanx