Nitto NT421Q 255/55R18, All Season, Performance tires.

Features and Benefits: All season traction; Enhanced controllability; Longer lasting usability; Nitto NT421Q TiresThe Nitto NT421Q is a performance and high performance, all season tire made for SUVs. Nitto offers a 60,000 mile treadwear warranty with the W speed rated sizes and a 75,000 mile treadwear warranty with the H and V speed rated sizes of this tire model. The tire ensures great all season traction. The asymmetric tread with the siping detail and the all season compound increase the dry, wet, and winter weather surface grip. The tread elements firmly grip the road surface with extra biting edges. Additionally, the compound keeps the rubber flexibility as well. The tread's circumferential grooves prevent hydroplaning in wet conditions. They channel water and slush away from the footprint, optimizing the wet traction. The tread pattern maintains the surface contact at all times. This allows the tire to improve the steering responsiveness and driving stability throughout the performance. The model helps to upgrade the steering response time and accuracy, while the structure is secured against the driving pressure. The outer shoulder block pattern helps to boost the cornering power. These elements provide extra biting edges, enhancing the cornering and maneuvering capability. The Nitto NT421Q utilizes the tread design, ensuring even pressure circulation across the tread area. This avoids irregular and premature wear, boosting the usability. Furthermore, the tread's grooves also feature maintenance indicators. These visually portray the treadwear rate and manner, while also showing wear issues. This allows the driver to follow the tread wear and fix any arising issues on time. Manufacturers recommend changing tires every 10 years. As long as tires are properly stored before they are sold, the year of their manufacture will not shorten their service life.