Originally Posted by Timex
It has been stated on a previous thread to let the tires cool before applying the xchocks due to the tires might be swollen from heat of travel. The xchocks are actually one of the last steps I do when setting up and one of the first things I take off when hooking up. It has also been stated that if the chocks are cinched down on the tires when jacking the front of the camper, this puts undue stress on the tires.
I use a pair and they help take away the forward/backward motion.
Haven't had a problem putting them on the way I do or have them loosen from cooling and I put them on as soon as I get backed or pull into a site.
As for stressing a tire while hooking up, I doubt very much there is any more stress applied than when turning. I will continue my wayward method.