Investigation of worn tyre/road noise radiation using simulation and experimental methods

Tyre tread wear is unavoidable phenomena throughout its life. Various tyre performance parameters change once tyre tread starts wearing which includes tyre/road noise. Understanding the relationship between tyre wear and tyre/road noise is very difficult. There are many ways the tyre can wear out. Out of various type of tread wear possibilities, this paper sheds light on effect of heel and toe wear on overall tyre pattern noise. The heel and toe wear phenomena is replicated in tyres under controlled environment and same phenomena was modelled using FE software to study tyre noise behaviour using in-house developed code. The study mainly focuses on understanding the relationship between experimental and predicted worn tyre noise which shows noise results are in good correlation between these two approaches. Outcome of this study will enhance the understanding on worn tyre noise behaviour to reduce noise levels throughout its life.