If you have the 4" square tube bumper, you should be able to go to any RV dealer like Tweetys.com and buy an inexpensive tire mounting kit. My Thor Axis 24.1 doesn't have that bumper and I was forced to fabricate a hitch mounted extension that has a tire carrier on it. It folds down and is all bolted, no welds. I took 2" square tubing and 2-5/16 square tube to make the extension, but you can buy them too. Then took flat plate to fasten an upright tube to the extension and another plate mounted to that to fasten the rim to. A competent welder/fabricator could make one for you.