Michelin® PAX™ System is a new run-flat technology that combines a unique tire, wheel, support ring, tire pressure monitoring system, and specially formulated gel to enable continued mobility after a sudden loss of inflation pressure. The system is designed for operation at 55mph for a range up to 125 miles. When in normal (inflated) operation, Michelin® PAX™ System tires enhance road handling and driving comfort, plus reduce rolling resistance.