I ride several bikes having 170 and 175 cranks.

The 170's spin faster and have better cornering clearance, and the 175's require less effort but don't spin as fast.

I have given some thought to trying 165's in order to spin faster.

Some years ago I researched crank length in relation to body proportions, and I found little agreement amongst the "experts."
Therefore, I just pick between spinning faster or climbing more easily.

My 175 crank bike has the highest bottom bracket shell of all my bikes, and so cornering clearance has not presented an issue.

Just for grins, try leaning your bike over when not riding it and see how far it must lean before the pedal contacts the ground.