Sorry to be so late in responding to the question as to whether I have run Michelins more than 7 years. Honestly, I don't remember; probably not, since I seem to always run vehicles around 15,000 miles per year, and that would be over 100,000 miles.
To tell you the truth, and I have stated it on this forum many times, I think the age thing is terribly blown out of proportion. I was in the tire industry for 40 years, done many, many "scrap tire analysis", and will tell you a very, very minor percentage of failures is age-related. I firmly believe this age thing is nothing but a sale gimmick promoted by tire MARKETERS, not MANUFACTURERS. In fact, would like for the person who posted on this forum to give me his source of information wherein he said Michelin states replace after 7 years ????
Have always maintained my tires well; proper air pressure, alignment checked periodically,etc., and just don't pay any attention to the age, just check them closely every once in awhile. If you aren't experienced with the technical side of tires, I would suggest you have a good, reliable dealer check them about once a year after the 5th year of life.
"In the tire industry 40 years; seen it all and done most of it"