I am an 87.8 year old who has had an X-treme e-bike for 5 years in February. Bought it as part of the company's intro of the bike for only $499 on the web. Love it! Local bike shop changed tires at my request from knobbier to non-aggressive road tread. Battery is beginning to drop off a little; top speed with throttle is about 17.5. 99% of use has been with throttle.