The owners manual states E10 or 91 RON fuel however I think I will continue to use the 95 although it is getting harder to find in QLD.
That'd be an American manual Totgas, they use a different petrol octane rating - as I keep telling Harley riders who say their manuals recommend 91 octane.
US octane rating is an average rating. There are two octane ratings, MON (Motor octane number) and RON (Road octane number) and MON is usually about 10 numbers lower than RON, that's called the 'sensitivity'. So US 91 octane is really 96 RON+86 MON/2 = 91 US octane. Here in NZ and Australia we describe petrol by it's RON as there are government specifications for fuel quality which include a minimum MON specification, so there's 91, 95 and 98 (though I think 98 is just a marketing grade as there's no specification for 98 petrol, or at least not here in NZ).
I took a BMW R1200RT out a number of times when looking at an upgrade from the Suzuki M50, lovely bike, all those extras, the wife fell in love with the heated seat. But I found it was very high in seat height, just like the ST1100, and I was uncomfortable with just having the balls of my feet on the ground so didn't buy it. I think the R is more a Sports Tourer, equivalent to the ST, and the K is the tourer, equivalent to the Goldwing.
I kept the M50, I had it repaired after a taxi turned through traffic and took me out, and am now selling it as I have decided that, at my age, I heal so much slower so I've officially become an ex-motorcyclist. But that R1200Rt was a nice piece of kit and I envy you Pete.
