I thought this thread was long dead but like the terminator, it's back. :E Can't we just talk about Chinese ST tires or politics instead?
Good point - if you shouldn't use X-chocks as chocks, why use "chock" in the name? X-chocks is all I use but we only park on relatively level sites in commercial CGs. I always tighten the X-chocks as far as I can and when we pack up to leave, they're always just as tight. Even if the temp. drops to near freezing, it doesn't make a difference. Our tires do not seem to shrink but maybe higher load road range tires inflated to their max. rating don't shrink as much?
I would think using X-chocks alone on spread axles isn't a good idea?
I did have an occasion once early this season at a CG that had just placed new gravel on the sites. Gravel had round stones, not crushed gravel in it so was like being on marbles. I had to use a few lego blocks under the tires on one side. I use 6x6 under the tongue jack. I didn't know how soft the underlying ground was from all the recent rain and the 6x6 rolled to one side as I raised the tongue jack and it slipped clear off. The X-chock popped out on one side in the process. TT wasn't going to go anywhere but def. not fun getting the tongue jacked back up and hooked back onto the truck to get the TT back into place. Lesson learned.