We were on a CA 99 headed south to Bakersfield
That'll do it! Ca-99 is really bad between Bakersfield and Modesto. I always found that stretch aggravating with all the clusters of trucks and crazy speeding cars on a twisty curvy and disheveled piece of highway. I always tried to avoid it.
Ah- As far as carrying a spare, Driving the Sat Trucks around Arizona for 30 years, I too, didn't have the space to carry a spare, so What I eventually came up with was to use roadside assistance and ask if they had my preferred tire, if not,
I would buy a used tire for them to install to get me on my way. Then when it was convenient, I would order a new replacement and switch it out. Sure it would cost a little more (usually around $15-30 bucks) in the long run, but it really did solve the space savings and matching replacement issues surrounding blowouts on the highway.
Back then I kept standard white truck rims on the truck, they would mount the used tire on another white rim at the shop, and bring it out to replace the blowout, The would take my white rim back as an even trade. But with our beautiful aluminum rims, I'm probably going to still buy a used temporary tire if they don't have a direct replacement, but will need them to mount it on location. Se a vida.