>>1578290And what do you think creates "torque", i.e. the force needed to tighten the thing? Friction caused by the threads being pressed together.
Just about every bearing in every machine in the world is installed by 'press fit', including the ones in the threaded cups of your bb. If interference fits were unreliable, the wheels on your car would fall off (>implying you can afford one)
>>1578313Only if the frame is a piece of shit.