Awesome in the rain. You can hear them at highway speeds if you have the radio off, but they are the quietest mud tires I've ever run by far. It is not a loud noise though. Definitely more quiet than KM3s, about like a Duratrac. We'll see when they get worn if they get louder - right now they have about 9K on them.How do these tires do in the rain? And can you hear them on the highway with the windows up?