Suggestion to all with the original Goodyears...take them off, take them off NOW, put them in plastic bags and in the mythical "cool, dark place". They are now three steps towards petrification. Plus, they will be an asset years from now. Look at what a Goodyear for a MK III Cobra sells for. They are an investment that is best NOT used. Put on some Dunlops, BFGs or whatever and let the remains of your Luxembourg made gatorbacks rest for another day.
Rick