Influence of Tire Pressure on Noise Road

The article concerns the analysis of the influence of pressure on the noise generated by tires. The largest source of noise and vibrations is the cooperation of the wheels with the surface and the aerodynamic noise. For this purpose, seven winter tires, seven summer tires and one all-season tire were tested in the same region and same conditions. By changing the pressure in them in the range of 1-3 bar, the noise of the tires was measured. On the basis of the conducted tests, it can be concluded that with the decrease of tire pressure, the noise level of the tire decreases. The average noise drop recorded during tests for all types of tested tires is about 1.5 dB at a pressure drop of approx. 2 bar. The decrease in noise at reduced pressure is also dependent on the size of the tire and the softness of the mixture used for the production of tires. When operating the vehicle, follow the manufacturer's tire pressure recommendations.