All spot on advice here Alun! If you do use it in the winter make sure the car is dry before using a cover as that's worse than leaving it outside. I use a commercial heater fan on cold and move the air around every other week or so. This has successfully kept my car nice and dry. I also have a lift and keep mine raised off the ground. This does two things, firstly it lets the car breathe easier as the air flow around it is improved and secondly it takes the weight of the suspension and tyres. I have always over inflated my tyres for winter storage even when no weight has been on them. This is more important if the car is sitting on them. Some roll the car forward and back occasionally to change the load spot too but in a normal garage this might not be possible. For years before I acquired the lift, from November to March I used to put it on axle stands.
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