good question. It would be nice to have something that we all can cross reference with the equipment we have for something just in case. I hate those sunday nights drive home. Not a store open after 6pm and most tire places in country are closed weekends. When I got caught without a spare, TWICE!!!! I had to make do with what I had. I had to borrow my camper 14" rim and put it on landscape trailer that uses 15" and limp home without a problem. Later this year, I blew tire on camper and was able to borrow my chevy malibu tire and limp home with it and put donut tire on the mailbu. (had both with me at the time). I just happened to luck out with bolt pattern that fit perfect but yeah the tire hieght is difference by inch or so. Perhaps its time for you to pull the full size spare off your truck and see if it fits your trailer. Also check the lugnut size and have 4 way wrench packed away. First time I had nothing that fit. Had to go home and get tools and steal tire from my camper anyway. Second time I was a little more prepared and had 4 way wrench with me. Hopefully my misfortune will help others.