Spare tire? What's that?
I do have one, but i don't usually carry it with me. IF a duel goes flat, you can first try to plug it with a do it yourself kit......if that doesn't work, or if they tire is not repairable ie: hole in the sidewall, you candrive a long long time to get to a tire shop. I drove more than 100 miles north of LA with a flat on the rear, and i had a spare and the tools to change it. IT was easier to go to the tire shop and let them do it. $80 bucks for a new(used) tire and i was good to go.
If a front goes flat, you can switch the front for a good rear tire while you drive to the tire shop....
all that being said, skoolie tires do not easily go flat. Even when they are "rock hard baldies" they seem to just go forever.
Quis custodiet ipsos custodes (who will watch the watchmen?)