I'm hauling a 2,400 camper on a 2015 and got a set of lower stable loads. Went to install and they wouldn't fit. So before I modified them or returned them to TorkLift, I did a test by using a 3/4" piece of plywood taped in position. After 500 miles, the tape had started ripping so I removed them. However, the distance was enough to show they didn't help enough to worry about using them. However, with a heavier camper, I'm sure the benefit would be greater and make them worth the effort if you used all 3 wedges. The trick to make them easier to install is to drive the opposite rear wheel up on a ramp to open the spring pack.