If you really want to store your car correctly, remove the tires and bag them so that ozone won't get to them after inflating them to max pressure. Spray some silicone in the bag. Just make sure the spray is compatible with the paint on the wheels.
Take some old wheels and crappy tires and put them on the car or jack it up and mount it on stands >on the suspension<, like it were sitting on its wheels and tires.
Cars with rubber bushings like to have their suspensions sit at the normal static ride height, not extended, for long periods of time. Otherwise your rubber bushings are stressed and tweaked.
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)