What is the best type of fuel to use in a BMW M1?

I recently purchased a BMW M1 and I'm not sure what type of fuel to use. Should I use regular unleaded gasoline or is there another type of fuel that would provide better performance?

Based on my personal experience, I would recommend using premium gasoline for the best performance in your BMW M1. Regular unleaded may be cheaper, but it may not provide the same level of performance and could even cause engine problems.

I've heard that using a higher octane fuel like 93 or 94 can provide better performance, but it's not necessary for everyday driving. Stick with 91 octane and you should be just fine.