Most motorcycles do not require different octane ratings of gasoline. The octane rating of fuel primarily relates to its resistance to detonation or "knocking" in high-compression engines. While some high-performance motorcycles may have higher compression ratios that demand higher-octane fuel, the majority of motorcycles, including those with standard or even sporty engines, are designed to run efficiently on regular unleaded gasoline, typically with an octane rating of 87.
It is essential to consult your motorcycle's owner manual to determine the recommended octane rating for your specific model. The manufacturer's guidelines should provide you with the necessary information to choose the appropriate fuel. Using a higher octane fuel than required by your motorcycle won't provide any additional benefits in terms of performance or fuel efficiency. On the other hand, using a lower octane fuel than recommended could potentially lead to knocking, decreased engine performance, and potential long-term damage.
To summarize, unless you have a high-performance motorcycle with an explicitly stated requirement for premium or higher-octane fuel, using regular unleaded gasoline with an octane rating of 87 should be sufficient for most motorcycles on the market.