| Tire pressure
ptrvr
It is my contension that the the ST tire is Speed Rated at 65MPH. This appears on Goodyears tire web site. The reason so many people have trouble with the ST tire is because of heat. The rubber compounds used cannot stand the heat of 65 MPH on a very hot summer day. This is evidenced by the number of people losing these tires, and the fact that appearntly Goodyear is having a "silent recall".
The majority run the Marathon at max pressure to minimise the flexing of the sidewalls and tread area (high pressure/hard tire) hense reducing the generation of heat which makes the tire fail.
All tires have a heat limit above which the rubber compounds loose their integrity and the tire comes apart. The general indicator of the compounds that will stand the higher heat is the Speed Rating (according to the NHTSA engineer I talked to on the phone).
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