to right tbh!! a flat tyre is as unsafe as a bald tyre IMO the amount of cars we get come through the work shop with 10-15psi in the tyres and the side walls have calapsed/broken apart due to this. a tyre in this state is just waiting to blow out!! and with 6 people in the car?? what was he thinking?? im gessing from the way you have said it the car is not ment to take 6 people?