When extra weight makes your vehicle squat in the back, the front-end lifts up reducing traction on the front tires. If extra weight maACkes your vehicle top-heavy, you're going to experience body roll and sway.
Didn’t want to spend the money on a air bag system when I don’t tow all the time. Only need something to minimize sag a couple times a year and these do the trick. Feel like it’s a great value