I have fresh Schwalbe Marathons and new tubes on my commuter. Spare tube kit and pump on board. Don't want a flat and definitely don't want to patch it on the road. Just got my mom's '59 Gazelle out from the Uncles rafters. Not sure how old the tubes & tires are, decades at least, but since they held air I rode it. 4 miles out I got a flat. That is a heavy bike to walk home! Realized I pumped them to near 60 when max is 45. User error. Now the Omafiets has fresh tubes and tires. Bit of a challenge with the full chaincase but not too bad when done in the home shop. She got a fresh Sturmey cable and some polish too.