Heavy rain + plus rutted highway + empty FSJ except for driver and passenger = Be careful!
This is more of a reminder than a question, and might be a little more oriented towards pickup owners, but anyway...I had a bit of a scare yesterday cruising downhill at about 50 MPH, nothing in my J's bed at all, whenI had to hit the brakes a bit when the car in front of me decided to slow way down. Everything ended up fine, luckily. I was at least 4 car lengths behind the car ahead of me. I fishtailed just a little, got off the brakes as soon as possible and everything straightened out, but I wouldn't want to repeat it again.
My tires a Toyo Open Country A/Ts with at least 50% tread, but I'm not sure any tire would have helped much in this situation, aside from a dedicated highway tread known for great performance in the rain.