Designers Gao Fenglin and Zhou Buyi create Discolor Tyre, and it is a concept where the age and durability of the car tire is indicated and communicated through its color. Basically a tire is good for around 20,000 kilometers, and then its kinds worn out. With the Discolor Tyre, the tire takes on a bright orange hue once it is worn out and requires immediate replacement. It saves you the trouble of keeping a constant check and acts as a good warning system to keep your travels safe.

Discolor Safety Tires - 01

Discolor Safety Tires - 02

via:yankodesign.com