I get no flat spotting, run flats tend not to flatten out , very strong sidewalls. I do put 42 lbs of pressure in them before storage. Never put a car on jacks for storage. I store it
in a attached , unheated garage. We have no issues with mice but my car cover is tight over the exhaust anyways.
My routine has been put stabilizer in the tank, make sure you drive it enough to mix it in, fill the tank. Wash it, top up the tire pressure, turn the side mirrors in, put
a cover on it and say goodnight until next April. I do put a battery tender on it every couple of weeks until we head down south after Xmas for the winter. Then I disconnect
the battery for a couple of months.
Spring time , starts no problem tires are fine.