Sumitomo St709 Tires

Commercial Truck/Bus. Medium-Duty Truck Premium Series Regional Steer tire.


  • Beefy 20/32nd" tread depth applied to a wide, flat casing for 10% more rubber volume than our predecessor
  • Chevron block center ribs with lateral sipes effectively cut water film on wet roads
  • Thick curbing ribs
  • Stone ejectors
  • An innovative design device


  • For much longer life in high scuff applications
  • For enhanced traction and safety
  • Help shield the casing from sidewall damage
  • Protect the casing from damage in the base of the groove
  • Helps control irregular wear during on-highway use


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