Serious tasks require a handful equipment, so the job can be easily completed. In this case, Sumitomo comes to help with the innovative and affordable ST918. This model delivers great results in regional and urban services. With its unique design which supports great traction, bad weather doesn't stand a chance. Used on the drive axle, it promotes long wear and vehicle stability on buses and trucks.
Firstly, on the exterior, we see an optimized placement of sipes. Their main role is that of maintaining great traction on wet roads, coupled with dry courses too. The lasting life of the product is provided by the unique thick tread layout and modern rubber compound. Secondly, the radically closed shoulder ribs with a specific design act as an excellent shield from sidewall deterioration. Afterward, the zigzag shaped grooves reduce the effects of skidding, and that maintains the safety of the ride. With the implementation of modern computer design, it delivers a maximum speed of 81 mph, and a single max load of up to 4,540 lbs.
The next major key component of the ST918 is the presence of four steel belts in the internal part of the tire. They help with more vehicle stability and offer premium protection from punctures, giving the possibility of more retread cycles. A smart curbing rib design on the sidewalls also minimizes damage and offers responsive steering. All new center island patch design enhances road grip. Moreover, stiff bridges of rubber keep the tread package intact, thus increasing stability and resistance.
Finally, Sumitomo continues being close to the customer by offering a 6 year or 2 recaps casing warranty. The model comes in two major sizes on the US market: 225/70 R19.5 and 245/70 R19.5.
Features and benefits
- Best drive position tire for commercial urban and regional services.
- Excellent siping distribution provides great traction even during heavy rain.
- Multi-phase shift tread pattern reduces exterior noise, which gives the best riding experience.
- Curved sidewall ribs extend the life cycle of the tread and lengthen commercial use.
- The presence of 3 zigzag grooves efficiently combats water buildup.
- Internal steel belt construction makes the tire more durable on bumpy roads.
- Distinctive closed shoulder pattern brings better load capacity and tire grip.
