Compared with four-groove tires, three-groove tires have one less groove. Therefore, the chance of breaking off rubber pieces due to small stones is lower. Under the same circumstances, they are more wear-resistant than four-groove tires. Compared with three grooves, four grooves have one more groove on the tire crown and one less groove of rubber, so the rolling resistance is lower and more fuel efficient. Therefore, under the same circumstances (same vehicle condition, same route, same load, same tire pressure, same driver's driving habits, same tire rubber, same craftsmanship, and same weight) "Three grooves are more wear-resistant, and four grooves are more fuel-efficient".
When a car drives on a rainy road at high speed, a thin layer of water film will form between the tire and the road. In order to increase the contact between the tire and the ground, several water guide channels will be installed in the longitudinal direction of the tire to effectively protect the tire. drain. The three or four longitudinal grooves on the surface of the tire are called water channels, and their main function is for drainage. The more longitudinal grooves, the better the drainage effect and the better the stability of the tire in rainy weather. The more guide grooves, the better. Too many guide grooves will reduce the contact area between the tire and the ground and weaken the tire's grip. In addition to the longitudinal water channels, there are many horizontal patterns on the tire surface to cooperate with the water channels to drain water and break the water film formed between the tire and the ground, thereby increasing the friction between the tire and the ground.
According to experienced drivers, there are still many differences between three-groove tires and four-groove tires. They have their own advantages and disadvantages in terms of tire grip performance, drainage performance and even fuel consumption. Choosing the right tires can improve and optimize the driving experience, but if you choose the wrong tires, not to mention the driving experience, even driving safety will be threatened, so it is necessary to understand this knowledge.