Car tire Nitto NT421Q 255/55 R18 109W
Car tire Nitto NT421Q Like other models of this brand, the summer tire Nitto NT421A was developed by specialists of the Japanese company Toyo. The Japanese tire giant has created a new brand, under which tires are produced, addressed to those motorists who are not afraid to try something new. The products of this brand, including this tire, are used to “break-in” various technological solutions, which are then used in models of the “parent” brand.
Wear sensors
One of these solutions was tread wear sensors. But unlike the tires of many other brands, the developers changed their shape and location. They are applied in the form of many points on the walls of the longitudinal drainage grooves. Outwardly, the wear sensors look like a dashed line leading down from the tread surface. This solution has one significant advantage, namely the ability to more accurately track the degree of tire wear, which allows, for example, to notice its unevenness much earlier. As a rule, this behavior of the tire is a consequence of a malfunction in the suspension of the car, the elimination of which at an early stage of its development will be much cheaper.
Intersecting 3D lamellas
In some markets, this tire is positioned as a model that can be used both in summer and winter. The universality of the application is largely due to the use of lamellas. These tread elements have several features both in design and in arrangement. The walls of the lamellas are made in three-dimensional design, and they intersect each other. This solution has improved many of the driving performance of the tire. First of all, it is grip on a slippery surface, provided by a large number of edges that are of considerable length and are located at different angles relative to the direction of movement. At the same time, the three-dimensional design of the walls of the lamellas when they open limits the mobility of the blocks, which has a positive effect on handling, resistance to uneven wear and rolling resistance. For further details read nitto nt421q review and learn more.
Reinforced shoulder areas
One of the key features of the tire is the reinforced design of the shoulder zones of the tread. The breaker located directly below it is equipped with additional cords made of synthetic material. They are wide nets located under the shoulder zones. The presence of such a rigid “substrate” further improves the efficiency of these functional zones, which, in turn, has a positive effect on a number of tire performance properties, one way or another, depending on the transmission speed of lateral accelerations during maneuvering and cornering. First of all, it is feedback transparency, directional stability, adhesion, resistance to uneven wear, rolling resistance.
Stability Enhancing Blocks
Of the many other design features of the asymmetric tread, it is worth noting the execution of blocks located in the “shoulders” zone. They have a composite structure, divided into two parts by a wide longitudinal groove. The stiffness of blocks located closer to the edge of the tread is ensured by the massive dimensions of each of them and the transverse arrangement. In turn, resistance to deformation of elements located in the central part of the tread is achieved by the presence of jumpers. They combine blocks into groups, two in each of them. This design significantly improves tire grip during lateral accelerations, and due to the very long grip edges reduces the length of the braking distance.
Key features of the Nitto NT421A summer tire
- Tread wear sensors for more accurate readings;
- Intersecting 3D sipes enhance grip on slippery surfaces;
- The composite design of the blocks of the shoulder zones improves stability during maneuvering, reduces the braking distance.