Wow. I gave up on my Ebike, F1 Free Go. It went 33 mph. But I got so tired of flat tires, I used it to commute to work. I even replaced the rear tire with a heavier duty puncture resistant tire, still got flats. Ty for posting this. Will keep this in mind if I buy another Ebike, just can't risk being late to work. God bless. John 3:16. He is Risen!