Most of you never have this problem as you wear tires out before they age. I don't get to ride much and when I do my time is shared between 2-3 scoots. The 89 had new tires installed in July of 06 with only 5500 miles on them now. They still look new but I'm going to do a close inspection for cracks and dry rot.I'll check the date codes as the tires may have been 1-2 years old sitting on a shelf somewhere. If the tires are 5-6 years old should I be concerned about the age if I can not see any signs of cracking or dry rot?