We have absolutely loved our Airstream and have made many improvements. We replaced the original tires about 7500 miles ago with Hercules H-901s. We replaced the Lead-Acid batteries and converter with two new 100 Ah Dragonfly (BattleBorn Batteries) Lithium Ion batteries and the appropriate converter. The electrical system also includes recently installed Victron shunt and solar charging controller. Two sets of 60W portable solar panels are included. Fiamma two-bike rack was also added and is included. All stock appliances and TVs are fully operational and in good working order. Power awning and power leveling jacks are operational and in good working order. Hitch, load levelers are also included.