These tyres are in good condition with plenty of tread and still soft rubber but due to my restoration finish date being three years away I have to do all I know to preserve these babies. I am only using info that I have found on the net with a couple of my own modifications.
Firstly I washed and dried tyres, removed all stones and sprayed Aerospace Protectant 303 and wiped them over tread, inside and side walls. I let this soak for a few days then did it again and then wrapped each tyre with black cling wrap. Marked with a + on one side so I can rotate evenly every few weeks. They will be stored in a cool dry place off the concrete.
To find out if this works will take a few years but I'll try and update this thread when they get unwrapped.