I'll be putting on the winter tires pretty soon and I was wondering what you guys do to store your all seasons/summer tires and alloy wheels for the winter? I was planning to store them bagged in my garage, which is neither insulated, nor heated. Does the cold can do any harm? Would I be better off storing them in my basement? Do you release some pressure off them? And what is the recommended way, e.g. flat on the sidewalls, upright or hanging on the wall with large hooks?

Any input is kindly appreciated.