What are the process involved in tire rotation during long term storage?
Manufacturers give the manual for storing/parking periodic ground check.

For Airbus A320 family:


  You can ignore this step if you moved the aircraft for the APU start.
  
  Turn the wheels by 1/4 turn to prevent damage to the tires:
  
  a) Move the aircraft Ref. AMM xxxx or b) Refer to the jacking for
  wheel change procedures to turn each wheel separately


This is done if storing is more than 15d, and repeated once every 15d.