Sumitomo proved time and time again that they are the ones that bring true quality to your road experience. Their new ST778+SE is a SmartWay Verified long haul steer tire that delivers both great performance and superior mileage.
For example, the innovative tread design of this tire offers low rolling resistance for peace of mind while driving. It takes advantage of strong shoulders with grooves to keep irregular wear under control, thus increasing rubber lifespan. Also, these grooves decrease shoulder strain and enhance cornering ability for safe steering in sharp curves. The wide lateral ribs evenly distribute road pressure that increases rubber life by a lot, allowing for loads up to 6,614 lbs per single wheel. Four linear grooves are present on the ST778+SE that quickly evacuate water, therefore decreasing the risk of aquaplaning. Inside the grooves, we can see plenty of smartly placed stone ejectors that combat rock retention for a stable and safe trip, while also promoting casing integrity.
Moreover, Sumitomo enhanced this model with micro sipes that offer superior traction power and great protection for the interior ribs. This tire benefits from cutting edge technology on the inside to really push performance to the limits. In particular, the four steel belt package offers the best resistance to punctures and also increases vehicle stability on uneven roads at speeds up to 75 mph. Amazing cut and chip protection is ensured by the outstanding engineering of the ST778+SE which also allows for a fuel efficient ride. With a tread depth of 18/32nds, long haul services have never been this comfortable. Also, what makes this possible is the base compound present in the rubber.
Above all, Sumitomo backs you with a 6 year or 2 recap casing warranty. It is found on the US market in the following sizes: 11R22.5, 11R24.5, 295/75 R22.5, and 285/75 R24.5
Features and benefits
- Innovative patch construction provides premium quality and performance.
- Wide and stiff shoulders distribute pressure evenly for stability and long tread life.
- Five rib patch design that offers great cut and chip protection and strong traction.
- All new internal build enhances tire durability for a safe long haul drive.
- Superb water evacuation due to four deep linear grooves that decrease hydroplaning issues.
- SmartWay Verified tire model that is both highly performant and fuel efficient.
