G-FORCE ZM

12 reasons not to buy

• The misleading "14-day free returns" policy is a minefield of conditions. There's a 25% restocking charge, return shipping isn't included, and the box mustn't be opened.

• Buyers voice frustrations over poor reliability and non-existent customer support.

• One tester finds quality-control problems that could result in damage during assembly. Another's ZM is missing a fender.

• The cramped riding position and ghost pedaling at high speeds mean pedaling is uncomfortable and impractical. A realistic throttle-only range is 30 to 40 miles.

• Experts lament the lack of rear foot pegs for a passenger.

• At 92.5 pounds as tested (G-FORCE claims 85 pounds), the ZM is heavy, even for a motorcycle-style e-bike.

• A tester says the bike is sluggish when pulling away and when starting to climb. A user complains of his ZM's lack of torque.

• The rear light doesn't operate as a brake light.

• Experts agree that the suspension isn't suitable for off-roading. One thus questions the purpose of knobbly tires instead of slick street tires.

• The ZM's 160mm brake rotors are too small, given the high weight and max speed.

• According to one reviewer, motor assistance is too weak in PAS 1 and too strong at higher PAS levels.

• The display menu settings are confusing and hard to use.