THE DUNLOP SP SPORT MAXX DSST TIRES ARE AN ORIGINAL EQUIPMENT (O.E.) SELF-SUPPORTING SUMMER RUN-FLAT TIRE THAT IS APPROPRIATE FOR SPORTY VEHICLES MANUFACTURED IN THE U.S. AND IMPORTED FROM EUROPE AND ASIA. THE TIRES OFFER TEMPORARY EXTENDED MOBILITY IN THE EVENT OF PUNCTURE OR TIRE FAILURE AND WERE DEVELOPED FOR LIGHT TRUCKS AND NEW CARS. THE DUNLOP SP SPORT MAXX DSST PROVIDES A SPORTY BLEND OF NOISE COMFORT, HANDLING, RIDE QUALITY, AND DRY AND WET TRACTION. THESE TIRES ARE NOT DESIGNED OR INTENDED TO BE DRIVEN IN FREEZING CONDITIONS LIKE ICE AND SNOW. DUNLOP SELF-SUPPORTING TECHNOLOGY (DSST) TIRES SUCH AS THE DUNLOP SP SPORT MAXX DSST INCORPORATE A SPECIAL SIDEWALL REINFORCEMENT THAT WILL SUPPORT THE WEIGHT OF THE VEHICLE EVEN IF THE TIRE IS FLAT. EVEN AFTER AN AIR PRESSURE LOSS THAT WOULD RENDER A CONVENTIONAL TIRE IMMOBILE THE DSST TIRES ARE DESIGNED TO ENDURE RUNNING THE TIRE WHILE FLAT FOR 50 MILES AT SPEEDS OF UP TO 55 MILES PER HOUR. THIS ENABLES THE DRIVER TO MAINTAIN MOBILITY THAT MAY BE NECESSARY TO DRIVE AWAY FROM A DANGEROUS SITUATION OR ADVERSE WEATHER CONDITIONS. THE INTERNAL DAMAGE WILL MOST LIKELY MAKE REPLACEMENT OF THE FLAT TIRE NECESSARY AFTER RUNNING IT ANY DISTANCE HOWEVER IT DOES PROVIDE THE ASPECT OF MOBILITY. THE DSST TIRES ARE ONLY RECOMMENDED AS DIRECT REPLACEMENT TIRES FOR VEHICLES THAT WERE ORIGINALLY EQUIPPED WITH THE SELF-SUPPORTING RUN-FLAT TIRES OR VEHICLES THAT HAVE A TIRE PRESSURE MONITORING SYSTEM.