Mine is definitely the trend of doing “catless downpipes” and “resonator deletes” making your exhaust super raspy as a means of gaining more volume rather than doing a proper exhaust setup. Especially since high flow cats these days will flow more hp than most are making.
Stretched tires, typically on already shitty stanced cars. Add a sticker for their Instagram handle and you’ve got the trifecta of terrible car culture.