The Sur-ron is just an amazing bike, and I'm sorry to say this may be as good as it will ever get for a performance ebike. Every time I ride this bike I'm blown away by how great it is.
I of course did some minor modifications, new fork, new controller, new handlebar, new rear wheel, new brakes, thumb throttle upgrade. I say minor because what they replaced wasn't that bad and performed the same exact function.
I've been riding it so hard lately off-road, really beating it to death, and this bike just doesn't break. I don't even do daily checks anymore for loose bolts and spokes. I just don't even check them anymore, maybe once a month. The bolts just don't loosen up, and I rebuilt the rear wheel so the spokes don't loosen up anymore.
I really like the 18" shinko 241 3 in tire. I have been riding it at 9 PSI, and that is with a regular tire tube and no rim lock. It just doesn't need any of that and I ride up steps often, the tire doesn't slip on the rim. Don't get me wrong, sometimes I do worry if the tire will slip riding up steps but it just doesn't. I still really believe the 18" x 3.00 tire is the perfect size, and the front stock tire is really the best all around tire combination you will get, and they are the same height.
The Shinko 241 3.00", does wear out rather quickly, not nearly as bad as the stock tire but this is good because its soft rubber and just right for the light bike, and cheap and available enough to replace.
Even though I'm using the stock battery, the Nuclear controller really adds a lot more power to the bike, a lot more acceleration and seems to add even more top speed. It adds a lot more fun to the bike. Plus it adds regen so I don't mind braking and wearing my pads out.
The handling of the bike is just amazing, it turns so sharp, it seems well balanced, its comfortable, its predictable. The shinko rear and stock front hardly ever slip out on me. Slow speed riding or fast speed riding are both amazing.This bike will ride as stable as a motorcycle at 50MPH, but then have the agility of a mountain bike slow speeds.
The greatest thing about this bike is that it doesn't overheat, the motor simply stays cool, under 75C, even if its 100F outside and your riding up steep hills, with lots of stops and starts,. Anyone who comes from hub-motor bikes should know just how annoying it was dealing with overheating motors.