Before performing any work on your Super73 electronics system, turn off the system and remove the battery. Involuntary activation of the Super73 system poses a risk of injury.
The RX has tire sizes of 20” x 5” (rear) and 20” x 4.5” (front) rubber tires with inner tubes and a rim liner. The larger rear wheel is used for better traction and helps apply the full power of the motor on the riding surface.
The S2 has tire sizes of 20” x 4.5” rubber tires with inner tubes and a rim liner.
The tube size for both the front and rear tires is 20” x 5” on both models.
Tires must be inflated using a pump with a Schrader valve tip with a recommended pressure between 27 and 30 psi (1.86 -2.06 bar). Check the condition of the tires and rims for damage, cracks, or deformation. The tightening torque of the wheel nuts is recommended at 16ft/lb (21.69 Nm).
The Super73-ZG, SG, and SG1 have 20’’x 4.25‘’ (51cm x 10.7 cm) rubber tires with inner tubes and a rim liner. Tubes are 20”x 4”-1/4 but 20“x 4” also work. Super73 recommends 20-25 PSI (1.37 and 1.7 bar) for street riding for the front and rear tires on the Super73-ZG. The tightening torque of the wheels is recommended at 25 ft/lb (33.89 N m).
The tires are designed for durability and safety for regular cycling activities. However, tires must be checked before each use for proper inflation and condition.
Proper inflation, good maintenance, and quick replacement will help ensure that the operational characteristics of your bike will be maintained and dangerous conditions avoided.
It is essential that the proper air pressure is maintained in the tires all the time. Do not under-inflate or over-inflate your tires. Low pressure can cause loss of control and lower the bike's battery range. Tires that are too inflated can burst, especially if temperatures are higher or the bike is left exposed in the sun. Failure to maintain proper air pressure rating indicated in the handbook may at any time result in tire and / or wheel failure.
Inflate your tires from a regulated air source with an available manometer. Inflating your tires with an unregulated air source could over-inflate them, resulting in an exploded tire. When tire wear becomes obvious or a hole in the tire is found, you must replace the tires and/or tubes before using the bike, otherwise, injury to operators and/or damage to your bike could occur.
To avoid serious injury while replacing the tires/tubes, make sure all air pressure has been removed before removing the tire from the rim. In addition to proper inflation, correct wheel alignment helps to decrease tire wear.