Sumitomo ST709SE SmartWay Verified Commercial Steer Tire

The Sumitomo ST709SE is a SmartWay Verified medium-duty commercial truck and bus steer tire engineered for regional and urban fleet operations. Carrying the EPA SmartWay Verified Technology designation, the ST709SE delivers measurable fuel efficiency gains through a low rolling resistance design — helping fleets meet sustainability targets while reducing total cost of ownership across the tire's full service life.

Built on a wide, flat casing with deep tread depth, the ST709SE is purpose-engineered to maximize service life in demanding steer axle positions. Its advanced tread architecture leverages Sumitomo S-Tech technology for superb grip and handling, while resisting the irregular wear patterns common in continuous on-highway use. The result is consistent performance and appearance from the first mile to the last.

Key Features:

• EPA SmartWay Verified Technology — low rolling resistance design supports fleet fuel economy goals and sustainability initiatives
• S-Tech Technology — delivers superb grip and handling across a wide range of road conditions
• Wide, flat casing with deep tread depth — engineered for extended service life in high-scrub steer axle positions
• Chevron block center ribs with lateral sipes — efficiently channel water away from the contact patch for confident wet-weather traction and safety
• Thick curbing ribs — protect the casing sidewall from curb damage typical of urban delivery and regional service cycles
• Stone ejectors in tread grooves — guard against stone drilling and casing penetration damage for consistent traction
• Irregular wear-resistant tread design — maintains even tread wear and reliable performance throughout the tire's working life

Backed by over a century of rubber engineering expertise, Sumitomo Rubber has been manufacturing quality tires since 1909. The ST709SE line is available in a range of sizes suited to a variety of medium-duty truck and bus applications — making it a versatile, proven choice for regional distribution, urban delivery, and mixed-service fleet operations that demand durability, wet traction, and verified fuel efficiency.