I've started/used my tinker toy Kubota in -20F, wouldn't you think it was frozen to the ground in those temps?? Nope, the front end didn't come up...
IF someone had the front end come up, it was SUNK IN, AND frozen to the ground!!
BTW, I have a really NICE bridge for sale...cheeeeep! You interested??
SR
SR;
I have heard of it happening.
I have had it try to happen to me;
1550 Oliver Utility, parked in a leanto of a shed,
cold frozen ground when it was parked,
snowed then a major warmup,
snow melt ran into the leanto and the ground got soft and muddy,
winter came back, lots of cold and snow,
needed to load the sander on the old plow truck,
went and started the tractor,
it was running an old set of combination double ring and reinforced twist link chains,
it had sunk down 2-3 inches in mud and water which had frozen to tires and chains,
started to try and move it and it would lift the front tires off the ground,
it took considerable time rocking it to get it to start to break free of the hold that the ice had on it,
heavy tractor, loaded tires, chains, mud and water to ice,
it can and has happened, it is rare.
Lou