90 Octane premium fuel is unavailable over most of Alaska. Only cities, and paved roads have premium.
Dealer talked me OUT of re-mapping the F800, said it would be un-necessary.
When possible, I fill with 90 octane, but had to run 87 for a thousand miles, one weekend.... with no audible harm ( Bike runs great, not sure HOW it can get by on 87 octane with 12 to one compression, but it, apparently DOES. )
Warm enough to RAIN is warm enough to RIDE.