Unfortunately I’ve had several problems with my am M2S bike. The tires are so thin that I got seven flats in two days. Spent $60 on tire liners and slime in the inner tubes and have not had a problem since. 2nd Problem was the spokes were extremely loose out of the box causing the whole bike to wobble. Spent $60 at a bike shop to have them both properly tightened. After only 50 miles of riding the throttle stop working and the speed sensor stopped reading as well. The pedal assist still works so I continued riding with no speedometer or throttle. They sent me a new sensor but it didn’t solve the problem. They had me take it to a bike shop and they could not figure out the problem. I got the bike back and went for a ride and within 200 yards sparks started flying out of the throttle control and the whole thing went dead. I have been waiting over 10 days for them to ship out a complete new wiring harness. They said if that doesn’t work they will give me my money back. This is been extremely frustrating. When the bike was working I really love it. Not so sure I would buy another bike online as it is difficult to find a shop to work on it.
--- UPDATE --- The wiring harness arrived today and they’re putting it in. Fingers crossed should know in the morning.
--- UPDATE 2 ---The wiring harness arrived and did not solve the problem. I think we’re looking at a whole new motor at this point. So frustrating because I was so excited about riding and now I’ve missed almost a month and still not fixed.