Features & Benefits:

Combined Tire Technology (CTT)? (Only on SP Sport 4000 DSST CTT.). Less tire weight and rounder cavity shape help provide a softer ride. Dunlop? Self-Supporting Technology (DSST)? (Refer to the run-flat owner's manual/limited warranty recommendations on operation at low or no air pressure. Tire pressure monitoring system required. Sold separately.) (Only on SP Sport 4000 DSST CTT.). Patented sidewall construction and specially developed rubber help allow continued mobility up to a distance of 50 miles at a maximum speed of 50 mph in normal conditions. Circumferential rain groove tread design and placement. All-season and wet traction capabilities. Exclusive, high-performance, all-season tread. Enhanced grip, control, energy absorption and tread wear in a range of driving conditions. Twin-shift noise reduction. Quiet performance. Rigid tread blocks for dry handling performance. Excellent steering and control during cornering. Groove area optimized for traction on multiple surfaces. All-season traction.