Finishing our Rad City bike assembly, we begin by pumping up the tires to 50 PSI, very happy to us a good tire pump and are left wondering how long it would take a portable hand pump to partially file a tire in the field! When adding air, be sure the tire and tube are centered to avoid sidewall bulges, etc. Lastly, it’s time to take our new Rad City outside and do a final inspection before taking our beloved new bike for a spin.