Tire Sidewall problems of the 2001 Saturn SC2

In 2007, based on recommendations from service technicians and other owners of my car's model, I purchased new michelin hydroedge tires. Upon recent inspection and rotation at a service center, it was noted that all four of my tires were dry-rotting at the sidewall near the treads. The technician stated that "michelins do that. " the tires are 4 1/2 years old, have been driven 23,000 miles with very little tread wear (9/32" left) and are not housed inside a garage where ozone could affect them. I drive 10 miles round trip each work day. I also do not live in an urban area. I researched this issue online and found many similar complaints of dry rot leading to blowouts, often with related accidents. In many instances michelin denied any responsibility and sited everything from environmental reactions to pothole and curb hits by drivers sometimes denying a claim before receiving the customer's documentation. There are too many complaints to ignore anymore. Just because many of us have found the problem before the tires caused an accident doesn't mean this is not serious. How many occurrences does the NHTSA need before it acts proactively to end this safety risk? I hope this complaint speaks for consumers who filed previously, others who have not filed and for those who do not know they are at risk. Please do not wait until a high-profile fiery crash brings light to this issue (as seems too often to be the case in our society. ) michelin has had a few major tire recalls, one just recently, so there is probable cause to investigate the dry rot complaints. Investigate now so we can all benefit from the NHTSA, an entity that is and will continue to be accountable for the safety of all taxpayers. Thank you.

Driving at 55mph on good road warm day 35 miles into trip when tire sidewall blew out without warning and for no apparent reason (big hole and tear--may have torn because I drove on it a little to get to a shoulder). (dot number: w2v9vfb040 tiresize: p195/60r15).

Driving at 55mph on good road warm day 35 miles into trip when tire sidewall blew out without warning and for no apparent reason (big hole and tear--may have torn because I drove on it a little to get to a shoulder). ( dot number: w2v9vfb040 tire size: p195/60r15 ).