If your tires PSI exceeds 65 PSI (E rated tires or higher) you’ll quickly learn that gas stations are no longer an option. Yet, having your own air and being independent is essential as an RVer and ViAir is the best. This pump comes with enough hose to connect to your batteries and reach your trailer tires with no issue. The air regulator is legit with an easy to read gauge. Big fan of ViAir.