I used to have a 125 /15 doughnut that I lugged around for about 12 years, unused. Before we left for Carlisle this year I replaced the very old, very hard Maypop tires with some new Michelins. Out with the doughnut and in with 2 cans of Fix-A-Flat, (because the first one is prolly flat) and a small 12 volt compressor. That left lots of room for more tools, parts and a couple bottles of wine.
We took all back roads round trip, a total of 1300 miles and most of those roads really sucked, condition wise, but were still fun to drive. Hundreds and hundreds of pot holes though, and I thought I would break something.
I steered around a lot of them , but I hit a few too. Danny is right ,those bouncy tall tires were the least of my worries. I was trying to stay out of the woods , mostly.