Trailer Off Tires for Winter Storage???

...and why is this necessary?
I'm open minded and just trying to learn...

Per Carlisle;

– Keep trailer tires in a cool dry place and out of direct sunlight
during storage.
– Use tire covers to protect tires from the harsh effects of direct
sunlight, moisture and temperature extremes.
– During extended storage, use a thin piece of wood or other surface
barrier under tires to extend tire life. For seasonal or extreme long
term storage, elevate the trailer on blocks to take the weight off the
tires. Reduce the air pressure and cover the tires to protect them
from direct sunlight.

Per Maxxis;

Tire Storage

Maxxis recommends storing tires indoors in a clean, cool and dry area away from UV rays or ozone gases (eg. generators). Tires should be stacked flat and reduced to 15 psi if mounted on wheels during storage.

If tires must be stored outdoors, Maxxis recommends raising tires off the storage surface to avoid excessive contact with the elements. If possible, wrap the tires in an opaque polyethylene cover to minimize the effects of ozone and oxygen.

If a trailer is being stored without removing the tires, place blocks under the trailer to remove all weight from the tires. Avoid moving the trailer during extreme cold weather.

Always adjust inflation pressure before putting tires back into service

Per Goodyear;

Storing your vehicle properly helps protect your tires.
• Keep your vehicle in a cool, dry storage area out of direct sunlight and UV rays.
• Unload your vehicle so that minimum weight is on the tires.
• Inflate your tires to recommended operation pressure plus 25%, but don’t exceed the rim
manufacturer’s inflation capacity.
• Thoroughly clean your tires with soap and water before storing them to remove any oils that may have
accumulated from the road.
• Move your vehicle at least every three months to help prevent cracking and flat-spotting,
but avoid moving it during extremely cold weather.
• Place your vehicle on blocks to remove the weight from the tires. If the vehicle can’t be put on blocks,
make sure the storage surface is firm, clean, well-drained and reasonably level.

Now if anyone need to know why the tire makers recommend all this ...give them a 1-800.

My RV sits on 2" x 8" x 48" long on limestone crusher run in a trailer shed out of the sun. I keep LT tires on my trailers at max pressures 24/7. I change them out at 7-8 years and 50k-55k miles as their getting close to the wear bars.

IMO the best idea is keep them dry and out of the sun when sitting for several months.