The optimized road contact surface and flat footprint prevent irregular tread wear by distributing the forces of cornering, braking and accelerating across the tire surface. As the tread is forced to wear out evenly, it becomes usable for a longer period of time. The tread pattern also features tread depth indicators. These indicators show when the tire is about to lose its great winter weather road grip. The Multicell tire compound is only present on the top 55% of the tread, after that the tread only has an average winter weather compound that still grips the road well. The indicators show when the model is close to wearing the special tire compound out and, later, when it needs to be changed.