You're not going to hit your bump stops until you max out the travel, which a 4in speed bump is likely not doing unless you're in a fairly low car. > The faste

You're not going to hit your bump stops until you max out the travel, which a 4in speed bump is likely not doing unless you're in a fairly low car. > The faster you go, the higher the forces. The higher the forces into the dampers, yes, but the whole point is that if you're in the right section of the damping curve they spread it out and turn most of it into heat. With well tuned suspension that means lower peak force on the rest of the car, which means less rattling of every single part other than the unsprung bits. > If the speed bump is tall enough Those are a rare exception on pubic roads. All the points you make are about pushing your car beyond max travel, which obviously will start to break things. I'm talking only about bumps below your max travel, which I argue you can hit at significant speed with minimal wear to anything sprung. > This is a case of knowing just enough about a topic to be dangerous. I mean I do race off road competitively so I've had plenty of experience testing these assumptions and witnessing real-world wear on my components as a result. If you ride washerboards all day in high heat you'll see plenty of blown shock seals, but with well tuned suspension a single speed bump at 30mph wont harm a thing on the average car. It just makes a "thud" that sounds like damage to people, and I guess that's a good deterrent.