Darwin , firestone is saying to increase the pressure from say 28 lbs to 32 lbs not to lessen it in the heat as most of us may like to do to help the wear factor. If you see the film taken when the tire peels away you would be alarmed too... There have been 74 deaths attributed to the tires already and more possibly to come, not from faulty pressure or driving techniques, but from bad manufacturing. * seattle * audrey