Premature wear on bridgestone tires not due to misalignment. manufacturer rep refuses to replace because it is not down to 2/32. supposed to be 80000 mile rated, but actual mileage is only 40000. the tires on passenger side are evenly but more significantly worn compared to the driver side. say i need to continue to drive until one tire reaches 2/32 despite the danger it represents. claim it is manufacturers guidelines. no injuries yet, but am i supposed to drive on these tires until a crash or someone is killed?