OK, I'm a cheapskate. When 6 years came up on the tire codes, I did some digging to look at both the risks and rewards:
1. Blowouts can cause wrecks which can kill you or someone else.
2. It is dangerous and costly to be on the roadside with a blown tire.
3. Many blowouts involve fiberglass and other damage. I would feel very foolish if I spent more to fix the damage than what the BRAND NEW TIRES would have cost..
4. (saving the best/worst for last). I talked to a man who had a blowout on the left front tire on an expensive coach. It took out a lot of electrical and some slide hydraulics, not to mention the body damage. The coach was in the shop over FOUR MONTHS! He was on foot. Maybe bought a tent.
In sum, I feel the money I spent for the tires was a no brainer...putting off the tire replacement WAS NOT AN OPTION!