Nothing shown on drawings to say where. But there may be a form of "hanger" underneath where the tire is slid onto a rack and then hoisted up against the underside?
Random guess there with not much real value!!
But if you are waiting/watching for a new RV to come in, you may want to look at better info for details of what you bought?
This is a great interactive parts group which gives vast info on lots of the items:
https://catalog3d.winnebagoind.com/menu/Parts.htm
It gives a floor plan as well if that has a few points which are foggy in the memory!
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Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!