I put the corvette into storage every year for about 7 months. Give it a good detail prior to storing. I Fill the tank to the neck disconnected the battery have it in the hotpress in the house. I got an offcut of linoleum flooring and placed under the car. Get the tyres to 50psi. I just put a few bowls of salt in both footwells and rear compartment I leave the window open slightly and put a custom fit car cover over her. Comes out of hibernation every May with no problems! Just did the same with the M3 minus the cover.