My dad has a low mile (21,000) SVO that had the Goodyear VR50 tires on it until today when he had a new set of Goodyears put on it. The tires appear to be possibly the originals or were replaced when the car was pretty new. They have a lot of tread on them, but are very hard and cracked if you looked very close. Are these old tires worth saving to keep with the car or are they worth anything to a collector/purist? Thoughts and opinions are welcome.