Sumitomo 5532878 ST778+ SE 285/75R25 Commercial Truck Steer Tire 144/141L

The Sumitomo ST778+ SE is a SmartWay Verified medium-duty truck tire engineered for long haul steer axle applications. Designed for commercial truck and bus operations, this tire delivers exceptional mileage, fuel efficiency, and resistance to irregular wear patterns.

Key Features:

• S-Tech Flat Contact Technology: Controls tire footprint shape and pressure distribution to minimize irregular wear and extend tire life
• Wide Flat Tread Radius with Shoulder Grooves: Works in conjunction with shoulder groove design to combat irregular wear and promote even treadwear
• Micro Sipes: Protect interior ribs from punch wear while enhancing traction in varied conditions
• Advanced Dual-Compound Technology: Features a longer-wearing tread compound on the outside for durability and a cool-running base rubber compound on the inside for heat management
• Stone Ejectors: Integrated into tread grooves to protect the casing from stone drilling and penetration damage
• EPA SmartWay Verified: Meets stringent fuel efficiency standards with low rolling resistance for improved fuel economy and reduced environmental impact

With a load index of 144/141 and speed rating of L, the ST778+ SE delivers reliable performance for demanding commercial applications while helping fleets reduce operating costs through extended tread life and fuel savings.