Design & Technology / Product
The key to boosting Sportage’s fuel economy: Low rolling resistance (LRR) tires October 21st, 2010
The all-new Sportage features numerous technologies including a high-performance engine to secure world-class fuel economy. Today, let’s look at the technology behind Sportage tires that make it one of the most fuel-efficient vehicle.
Sportage is equipped with low rolling resistance (LRR) tires to make it a car that is both environmentally friendly and economical.
Rolling resistance is the friction to rolling that occurs when an object rolls on a surface. With tires, it refers to friction between the tire and the road surface. Tires with low friction, i.e., low rolling resistance, mean enhanced fuel efficiency.
Developed to improve rolling resistance, the silica tire has superior rolling resistance than carbon tires. However, it does not completely do away with rolling resistance.
The LRR tire in Sportage is made with a newly developed, low-friction compound. Compared to conventional silica tires, it lowers rolling resistance by 10% and increases fuel efficiency by 1.5%. In addition, optimized tire pattern and structural stiffness maximize steering stability, road noise and braking performance. As a result, the LRR tire in Sportage has a rolling resistance that is 90% that of tires in competing vehicles, based on an 18-inch tire. It also has a short braking distance of 42.9m.
As shown in figure 2, LRR tire has an environmental mark on the side. The mark highlights the tire’s eco-friendly image and fuel economy and allows drivers to easily distinguish the LRR tire.
[Figure 2] Environmental mark on tire’s side
The fuel-efficient all-new Sportage! See for yourself the secret of fuel efficiency hidden in low rolling resistance tires.