Originally Posted By: Jarlaxle
Originally Posted By: ammolab
Regular may do you just fine. My wife's 250 NINJA and my BMW K75C both spec and run fine on regular gas and making 100bhp/liter to boot.
Note that 86RON (Euro spec) is about 90.5 octane as measured on US pumps.
Formula for converting US to EURO octane
And reversing that forumula, wet get: RON = US*(22/21)
US (R+M)/2 EURO RON
87 91.1
88 92.2
89 93.2
90 94.3
91 95.3
92 96.4
93 97.4
94 98.5
95 99.5
96 100.6
97 101.6
98 102.7
99 103.7
100 104.8
No, that's backwards: the Japan/Euro RON numbers are HIGHER than the US (R+M/2) pump octane numbers. I recall 91RON is 87 here.
Chart is RIGHT and you are RIGHT: chart shows RON numbers HIGHER than USA pump listings.
Originally Posted By: ammolab
Regular may do you just fine. My wife's 250 NINJA and my BMW K75C both spec and run fine on regular gas and making 100bhp/liter to boot.
Note that 86RON (Euro spec) is about 90.5 octane as measured on US pumps.
Formula for converting US to EURO octane
And reversing that forumula, wet get: RON = US*(22/21)
US (R+M)/2 EURO RON
87 91.1
88 92.2
89 93.2
90 94.3
91 95.3
92 96.4
93 97.4
94 98.5
95 99.5
96 100.6
97 101.6
98 102.7
99 103.7
100 104.8
No, that's backwards: the Japan/Euro RON numbers are HIGHER than the US (R+M/2) pump octane numbers. I recall 91RON is 87 here.
Chart is RIGHT and you are RIGHT: chart shows RON numbers HIGHER than USA pump listings.