I had to buy these for my 2020 Forest River Vibe because the regular pads weren't big enough. My trucks are 17 inches apart and the regular trucks are too small! I just received these the other day and they seem to be working great. At first I had a little trouble getting it up because I had to put a screw in the bottom to tighten it because the other side goes under my fender where I can't get to it. It appears to be made out of a good quality material (maybe a little lighter than other X-Chocks I've bought that didn't fit) but they got the clearance for my axles.