Dunlop SP Sport Maxx GT DSST 325/30R21
Dunlop SP Sport Maxx GT DSST 325/30R21 XL 108Y Max Performance Summer Tire 57001710
💡 Is the Dunlop SP Sport Maxx GT DSST 325/30R21 a Good Tire?
The Dunlop SP Sport Maxx GT DSST 325/30R21 is a summer max performance tire designed for high-end sports cars and performance SUVs requiring run-flat capability. It delivers strong dry grip and adequate wet traction thanks to its asymmetric tread design and specialized compound optimized for warm weather conditions. Ride comfort is firm due to the run-flat construction, with increased road noise compared to conventional tires, though this enables emergency mobility after puncture. Tread life is moderate for its ultra-high performance category, typical of tires prioritizing grip over longevity. Rated Fair by TireRack based on 79 consumer surveys, it provides puncture security for luxury vehicles but sacrifices comfort and is not suitable for cold weather driving. Currently priced from $582.97, it is available through major online tire retailers.
Check availability & current price →About This Tire
The Dunlop SP Sport Maxx GT DSST 325/30R21 is a summer run-flat tire, designed for high-performance vehicle drivers who prioritize emergency mobility and sporty handling in warm weather conditions. Its Dunlop Self-Supporting Technology (DSST) and reinforced sidewall construction focus on maintaining vehicle control even after complete air pressure loss while delivering responsive dry and wet weather performance.
This tire features special sidewall reinforcements that support the vehicle's weight without air pressure, allowing up to 50 miles of driving at speeds up to 55 mph when flat. The summer compound and tread design are optimized for temperatures above freezing, with construction specifically developed for original equipment applications on sporty cars and light trucks from domestic and international manufacturers. Driver feedback indicates solid dry weather handling with adequate wet traction, though comfort levels reflect the firmer ride characteristics typical of run-flat construction.
Compared to conventional summer performance tires, it emphasizes emergency mobility and puncture resilience over ultimate comfort and tread longevity. Overall, it's a practical choice for luxury sports cars and performance vehicles used primarily for warm-weather driving where run-flat capability is valued over maximum comfort.
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TirePath Editorial Review
"We recommend this for luxury sports car drivers who need run-flat emergency mobility in warm climates. The ride comfort suffers compared to conventional tires due to the reinforced sidewall construction."
