A few years ago, I would have laughed, but that's about the time I lowered by motorcycle's suspension 2003 Suzuki Volusia).
The lowering looked awesome, and I took my wife with me for a few rides. When I would hit a bump or pothole, I would hear a "shhhhppp" sound. It was annoying, but I couldn't figure out what it was.
I got tired of hearing it and really started to investigate, and found out that the rear fender was low enough to the tire thanks to my handy-dandy lowering that the fender would rub the tire with the extra weight on the back of the bike (we are both plus-sized models)...AND a bolt on the underside of the fender had neatly carved out a groove in the sidewall of the rear tire...AND I had forgotten to adjust the rear break for the new angle of the suspension the the drum was baking like an pottery kiln.
I now let the professionals work on my new bike.