[JRTJH]

I think using X-Chocks as a tire chock for safety (as opposed to for stability) is something that people will argue "until the cows come home". You'll have people who say they are not safe, because they are not reliable (me included) and you'll have people who insist that since they've always done it and never had a problem, then damn-it there is no reason to be concerned....

I'll just say that this was in the box when I bought my X-Chocks and I don't know if BAL is still including it or not. I'm no longer using X-Chocks, they are on the shelf, and I'm no longer "in the game of proving they work"....

It would be interesting to hear what BAL has to say if someone sent them an email asking, "Can I rely on your X-Chocks to safely prevent my trailer from rolling downhill while parked at a campsite, or should I also use "undertire chocks" for safety?"....