A different tire will help. In the meantime, try higher air pressure in the Vega. I used 36 psi to get better carving. It is a harsher ride but was worth it for me.

When I started out I watched this excellent video on dismount techniques. It's worth watching even though there is no substitute for practice. Even so, I still struggle with proper dismounts from time to time and jump off as a last resort if I lose my balance. Just keep practicing and it'll get easier.

https://www.youtube.com/watch?v=WYUbNtuGWMA

@flix123 You are a little too optimistic that there should be plenty of torque at low speed to balance the rider. Nose dives are possible at any speed, including from rest. A common nose dive scenario is a rider trying to cross an intersection quickly and nose dives as a result, long before they accelerate to high speed. Or going up very steep hills at moderate speeds.

A warning sign of an impending nose dive is a "surge", which feels like a very momentary wheel slip. If you feel that, back off immediately because a nose dive is about to happen if you keep accelerating. It is most noticeable for heavier riders going up steep hills or accelerating hard. Not noticeable at high speed, which is why heeding pushback is critical if you don't know what you're doing.

For the record, I am a 230 lb rider with 190 miles on a +XR. Obviously I am still learning, and I have never pushed beyond pushback speeds. No high speed falls (or even medium speed falls) so far. I do have Fangs and they have touched down 3 times or so, all at relatively low speed.

Edit: It is impossible for FM to eliminate nose dives because no matter what they do, the rider will always be able to force it to nose dive. However, I think there are steps that FM could do to help riders from unintentionally pushing their boards into nose dives. Maybe they are worried about liability, since if they leave it up to the rider they can't get in trouble for implementing an imperfect solution.

I agree with what others said. It takes a while for your muscles to develop. For tire pressure, start with your weight in lbs divided by 10. So if 200 lbs, use 20 psi. Later when you have more experience, try higher and lower pressure to see what you like. I've seen people using anywhere between 7 and 45 psi. I used to use 36 psi until I changed to a different tire.

Probably all is well. Don't get hung up on the "range" statistic. That's just a calculation based on your recent history and is notoriously inaccurate. When it shut off on you, was there an error message? Were you at 1 mph or less? Could be you footpad sensor released on one side so it thought you were trying to get off. Or a motor stall detect, which also can happen at very low speed. Check your footpad sensors and tire pressure. If okay, ride it and see what happens.

As far as I know, this is normal behavior if the OW is on rough ground at very low speed. For example, my lawn is bumpy and I when I tried to ride there on day one I got this motor stall error when my OW (+XR) rolled to the bottom of a divot and didn't have enough torque to climb out. No issues on pavement.

Very rarely I have gotten the error when reversing direction on pavement. Never at speed, and in 190 miles I've had no high speed nose dives. I'm a heavier rider, at 230 lbs, which may be contributing to the motor stall.

@willbelwood

The max speed after a nose dive isn't necessarily reliable. When you fall from a nose dive, the board initially tries to recover until it detects you are no longer on it. During this time, sometimes the wheel spins up faster than it had been going at the time of the nose dive. So you never know, maybe you had been going that fast when you fell, but maybe not.

Pushback starts at 10 mph in Sequoia, 12 mph in Cruz, and 15 mph in Mission, Delirium, and Custom. Some people say the speed varies depending on your weight, wind, uphill vs downhill, etc. However, in my experience it's just speed, regardless of load. So yours pushing back at 15 mph sounds totally normal. The only exception is overcharging pushback, cold temp pushback, and low battery pushback. Those happen regardless of speed or shaping mode.

How do I set the pushback speed? That's the only part of this new firmware I am eager for.

The only thing I can think of is very low tire pressure. Like almost flat.