Tyres have built-in tread wear indicators which mark the minimum allowable tread depth. The indicators are 4~6 small raised bars which run across the grooves of the tyre tread and are 1.6mm in height. Made to be clearly visible to consumers, the mark in the shoulder area also helps to pinpoint the location of the indicators. When measuring tread depth, one should avoid the area with the indicators.TyreXpert provides a specialized service to its customers. Our Sales advisors ensure to do proper tyre diagnosis and management before advising their respective customers.