Join Date: Jun 2018
Location: Pennsylvania, USA
If you look at the bottom of most major motorcycle magazine reviews where the specs are, you will notice that they give mileage figures for Regular / Plus / Premium fuels. Usually the higher the octane, the higher the mileage. You could calculate the best cost per mile by comparing your local fuel costs.
Unfortunately, they don't do dyno testing on the different fuels to see what performance gain there is, if any. Would be a good article though.
I think the higher octane does give a little more response on a motorcycle vs a standard car due to engine design. I have a Ford Transit Connect with the 1.6L EcoBoost (Turbo) that can take Regular fuel, however, the fine print in the specs are based on the Premium fuel which I think all turbo engines prefer. I do notice a better performance when turbo engages when running Premium.
If I had a Harley or some other cruiser, I would just use Reg or Plus, but with a single cylinder or sportbike, I would only run Premium fuel. It is not like you are consuming a ton of fuel anyways so the $0.30/gal is worth it even if it is only a small gain. If you modify the bike with performance exhaust, PC5, and or airbox mod I would definitely use premium.
2018 BMW G310GS White
2017 Hyosung GD250R Black/Gray
2016 KTM RC390
2014 Kawasaki Ninja 300 SE (sold)
2008 Hyosung GT250R (crashed)
199x Kawasaki Ninja 250 (engine failure)