"Premium" is a bit of false labeling, as it is more accurate to say higher octane fuels are less volatile, making them harder to ignite. When fuels are easier to ignite they can create detonation, which means the flame front goes supersonic (exploding) rather than progressing uniformly until the fuel is consumed.
So a hotter plug may help and using a lower octane fuel as a way to get ignition makes sense. You'd just not want to do it all the time or you'll get detonation when under load. I'm sure these bikes have knock sensors intended to mitigate detonation but it's still not something to do intentionally.
So a hotter plug may help and using a lower octane fuel as a way to get ignition makes sense. You'd just not want to do it all the time or you'll get detonation when under load. I'm sure these bikes have knock sensors intended to mitigate detonation but it's still not something to do intentionally.