Honda CBR250R STD 2013 Model's manual state that fuel(petrol) used should be 91 or more. Seems like they have defined the minimum threshold of RON than stating the optimum RON for the given bike.
What I want to know is can this model of CBR make use of of features of 93 Octane?
Based on your experiences fellow riders/mechanics, which did you find as the optimum RON of fuel (petrol) for this model?