That's impossible to say seeing as you didn't tell us what motor or even what bike.
You should use 93 Octane in your bike.
" regular " unleaded , 87 octane
Most professionals recommend that you use high octane gas. Like 92-94 octane.
Any gas should be fine. Usually higher end sports car require higher octane gas. Your owners manual should verify what octane you should use. Any Hyundai dealer would have the info for you too.
there recommended for 92 octane or higher with you should use premium gas witch is 93 octane
87 octane should do fine. If you find it knocks a little then go to 89 octane. You can always use 91 octane, won't hurt, just in the pocket book.
87
93
Premium, 91 or higher
87 octane is good for 3.1 but if ya want to use a different octane it wont hurt.
Try [unleaded] 87 octane. If it does not "ping" excessively you should be OK If it does "ping" try 89 Octane
the 6 cyl. will use 87 octane and the 5.7 and 6.1 hemi will use 92 or 93 octane.