I use Michelin tires on all my cars.
I will put no more than 3 PSI over the Spec'd PSI label in the door jamb of the car. 3 PSI more IS allowed for sustained High speed driving and Towing. The Tire and Car Manufacturers are in agreeance with this.
But, depending on the vehicle, the recommended (printed spec.) PSI most often gives the best ride comfort, handling and wear.
LT
