Glad to hear your truck protected you, sucks that you're sore, go and visit a chiropractor they can work wonders with back pain & stiffness. See if you can find one that practices "atlas orthagonal" chiropractic, It's voodoo I swear but it works, they do minimal physical manipulations.
I like the availability of 16" tires when I go looking for them, though it does seem that most truck mfg's are going to a larger rim, some of that is due to brake sizes on the new trucks though. The downside of 16" tires is the theory that there will be a bit more sidewall to flex on the same outside diameter tire.