I can't cite everything I don't remember but bare concrete is not great on tires.
However our is inside on concrete, coated concrete. Not sure of composition but polymer, most likely.
Sitting on hot concrete or hot gravel or asphalt, for a period of time a will affect tires greatly.
I've got a set of big plastic cutting boards to put under the tires, somewhere, here. Don't think I've used them. Coated Plywood or plastic is probably best. Wood doesn't conduct heat like other materials and won't affect the oils in tires.
Having said that I'm not sure if there has been a change in tire composition since those ideas were first espoused. The last tires we took off the coach after 13 years, last year, were perfect in every way I could tell.
Car tires and Light truck tires will go bad in just short times in some cases especially if the Chinese leave UV protection out of the rubber.
The Michelin salesman said the tires were warranted for five years. His Boss cut in and said there was no established life expectency on tires.
hedging their bets. Goodyear tire life was 10 years, more UV protection and things I have no grasp of.
We will see how long the Michelins last, with orange oil, instead of Dino stuff.
That will be the last time I change tires because of fear at 4 years or 13 years, they are shot.
Take car of them meaning don't leave salt of mud, dirt, and especially lime on outside or rear side of tires. Lime will suck oil out of rubber fast.
If parked outside I would use coated 1 inch pieces of plywood and tire covers, on a solid surface because the weight off our coaches will bust plywood on badly uneven hard surfaces, or the coach and tires and plywood will sink, on solid where there is lots of rain and especially snow.