For tires I like the Specialized Captains Pros but I mostly use them in muddy conditions. I have ran them low, like 28 psi but I had tubes with sealant just in case. They were tubes with replaceable valve cores.
All this being said, just go out and have fun. I spent too much of my first season worrying about gear choices.
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I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC