Tire blackener. Lasts for weeks. Tires won't turn brown even in rain or snow. Content: 473 ml. Deep black tires complete the perfect look of a well-maintained vehicle. Unfortunately, over time, tires lose their black color and start to gray or take on a slight brown tint. Meguiar's Endurance Tire Gel provides a solution. Once applied, it gives your tires a glossy black finish for weeks and ensures they won't turn brown even in rain or snow.