RON 100 is nothing compare to the E85...... RON 125........

btw only high compression or extremely thick air fuel ratio would benefit from this high ron number fuel.............

so i guess most 4 stroke high rev bikers would be cheers........finally they are getting what they want........

as long as ur car does not knock........ ron 88 (last time used to have this, long long time ago) would be good enough...........

but according to some review e85 actaully is cooler as........cannot confirm on this as i havent try it before

the amount the fuel injected/ air the cylinder suck in then only give u the correct air fuel ratios........CR alone wont do much help here as air intake is not consistant and modern engine do have their fuel injector make nearer to the cylinder or even inside.........engine loading also changes the situation

btw higher the CR, more mechanical energy needed to make the compression ~ e.g. diesel engine usually have big starter motor and battery to start the car......... so does not mean it can squeeze more.......