They probably added the climate-appropriate air when they changed the tires...but it wouldn't hurt to stop at your full-service station and ask the attendant on duty to check the oxygen level of the winter air in your tires. I believe AAA recommends we do this within two weeks of the time change. Improves gas mileage too, a win-win situation. I think the reason truck tires are so costly is because mostly guys drive trucks and we're impulse buyers...we're hungry, we buy food...thirsty, buy beer...need tires, buy tires...and unless Mom is there keeping a weather eye on the salesman...(saleswomen can do no harm)...we get took often. But...we keep up with things like winter/summer air.
You could be right about the impulse buying--probably why men's clothes rarely go on sale (or at least not as often as women's).
You know you're killing me with winter/summer air. Now I have to look it up and find out if that's real or I'm the biggest fish in the pond Thank goodness for the internet.