I made a 9040KM trip from my home on Vancouver Island through BC, Yukon and into Alaska in 2017. I took an extra spare for my 5th wheel and for my truck, a 20" which weighed a ton, and I carted them around with me for10 weeks and never needed them.
We were off the tarmac quite a bit, including driving the Dempster as far as the Arctic Circle sign at Eagle Plains. By the end of the trip I was cursing them, but I realize "what if....?"
If I did it again I might take an extra for the truck, If I needed one for the 5th wheel I could always unhoohkand go for help.
