Q: Are coilovers worth it on a Tesla Model 3?

They are worth it if you want control rather than a fixed drop. A coilover replaces the damper and spring as one integrated unit, letting you set ride height anywhere from factory to a 2-inch drop and change damping firmness in seconds. If your driving splits between commuting, canyon runs, and the occasional track day, that adjustability is the whole point. Owners who just want one set height are often better served by springs.