Aostirmotor G20 Folding Fat Tire E-Bike vs Vivi 20" Folding Electric Bike

The Vivi is the better all-round buy for most riders. It has a 48V system with a 1000W peak rear hub motor, more torque, a longer claimed range and a bigger owner base with a slightly higher rating. The Aostirmotor G20 wins on tires and load: 20x4.0 fat tires and a 300lb capacity suit beach, snow and gravel better than the Vivi's 2.4in tires. Both are aluminum folders with 7 speeds, mechanical disc brakes and front suspension, so build quality is close.

• Choose the Aostirmotor G20 if you ride sand, snow or rough ground and want wide 4.0in fat tires plus a 300lb weight limit.
• Choose the Vivi if you want more torque, a longer assist range and a lighter folder for city commuting and paved paths.