Sumitomo : HTR Z III

  • Sumitomo HTR Z III 285/30ZR-18 5517970 Disclaimer -
    Rim Not Included


  • Size: 285/30ZR-18
  • Sidewall: BW
  • Service Description: 97 Y
  • UTQG: 300 A A
  • Sidewall: BW
  • Load Range: XL
  • Type: Passenger
  • Performance: Performance


call for availability: 1.215.605.5085

Per tire:


The HTR ZIII is proof positive of Sumitomo's well-earned reputation for superior engineering and vanguard technology. Designed for todays most popular performance vehicles, the ZIII combines euro performance with street tuner appeal. The result? Enhanced traction, exceptional handling and a new level of ultimate performance.


  • Five-rib asymmetric tread pattern merges cornering with straight line stability
  • Long lateral grooves evacuate water from the center of the footprint
  • Four straight, wide grooves further heighten drainage for improved wet performance
  • Siped tie-bars reinforce block rigidity for control and enhance wet traction
  • A 3-D wave wall increases drainage capabilities and reinforces center rib stability


  1. New Silica Tread Compound
  2. High Stiffness Wide Steel Belts
  3. Jointless Cap Ply Layer
  4. High-Tension Casing Plies


Sumitomo : HTR Z III 285/30ZR-18

Size UTQG Max. Load Inflation Pressure Tread Depth Tire Weight Overall Diam
285/30ZR-18 300 A A 1609 50 10 lbs

Your purchase includes the Sumitomo : HTR Z III tire only. The wheel rim and any other accessories shown in the picture are not included. Image provided is a stock picture most likely from the manufacturer and may or may not reflect the actual product being ordered.

Actual Tire Specifications for the Sumitomo : HTR Z III tire shown above are listed to be as accurate as possible based on the information provided to us by the tire manufacturer.

Gridiron Tire, Inc. and the manufacturers have the right to change these tire specifications at any time without notice. If you have any questions, please email us at or give us a call at 1.855.502.7274.