Hi, I got a pair of rear NCT's for pretty cheap from a guy and was going to put them on my Delorean. They have good tread and everything, but they are 20 years old. Should I be causious about driving at high speeds with them if they have a few cracks? They look fine, but I don't want to be going down the highway and have them blow off. Any suggestions would be great. I plan on getting new tires all around in the near future, so if somebody wants a pair of rear NCT tires, let me know. We can work something out. Erik Geerdink 4512