You could sit on the bike and have a friend see if it still runs overs the chain guide. The top run usually pulls tighter when accelerating (or giving throttle).

I'm running a 15/40 for a larger circuit here in Japan and still have a little more and I'm at 160km/h. For the stop and go traffic, the previous owner had a 15/48.

Dana
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2016 Husqvarna 701SM
2021 Husqvarna FS450 supermoto
2014 Honda CRF250R supermoto
1995 NSR250r MC28