One of my motorcycles is quite loud. (A Ducati Monster 900 with unbaffled Stainture pipes and a chopped airbox.)

There's a stretch of road through a valley in the bush (an Australian term kinda like forest) that I used to ride daily for about 20 years - Wakehurst Parkway between Frenchs Forest and Narrabeen, for anyone familiar with Sydneys Northern Beaches.

In a "good" cicada year, they can be loud enough for a long stretch of that road that they completely overwhelm the engine noise of that bike. Really really loud. Loud enough that I'd often drop two or three gears and pin the throttle wide open just to amaze myself that a bunch of insects were making more noise than my Ducati.