use hydraulic lifts down or up in winter for storeing

Flat spots on tires? I leave mine on the tires all winter and never had a flat spot. Using them because you have them, another one for the "um ok" pile. Full timers use them to level their coach because to do otherwise would make it unlevel. No mystifying logic there either. It's being used and needs to be leveled, not being stored. Again I don't do it simply becuase no one has ever been able to prove any real benefit to doing so. "I've been doing it for 30 years" is not really a reason. On the contrary it seems like you invite more risk leaving the jacks exposed vs a potential flat spot on a tire - which I have never witnessed. And I have never seen a tire lose so much air as to cause damage. If so you need new tires. And wouldn't they lose the same air with weight off? I'd rather visibly see a low tire with weight on it, than not be able to tell come spring and lower the jacks on a flat tire. To each his own. Since the gen needs to be excercise for an hour a month, at the same time move the coach a few feet to "rotate" the tires if it makes you feel better. I also repeatedly hear horror stories about jacks being stuck in the down position. Seems like prolonged use might invite this issue too. Maybe not, but weighing the risks, I'll keep em up and protected in the winter and take my chances with the evasive flat spot.But whatever works for you. I am just struggling with the logic.