Can you use premium gas or super unleaded gas in a street motorcycle?

Most all motorcycles when tuned in properly run much better on gas containing an octane rating of at least 90 to 94.

Higher octane such as the 98 octane sold as racing fuel at some locations is not recommended unless your engine has been set up to run such high octane fuel as it can increase the temperature of the cylnder/heads and cause excessive wear..