I had asked the dealership if I needed to replace my tires due to age. Tread is still excellent. They said the 5 year limit is %^&&%. Just a way to sell tires, and if they didn't want to make a buck, I tended to believe them. If the tires and the bead is solid with no signs of dryness or brittleness, especially in Arizona, my tires tend to last till the tread is needs to be replaced. However we do have good roads, so it may depend on the conditions where the bike is and where you live. By the way can you add your location to your name so others can help you locally.