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Vehicles in India will soon come with star ratings, signifying how environment-friendly they are. The OEM's have braced to improve fuel economy of their existing & upcoming models. Tyre rolling resistance is one of the significant factors for vehicle fuel consumption. Improvement in Fuel consumption is always a prime focus area & to improve it all major factors are considered. In newly launched models, the low rolling resistance tyre development was initiated. The project is challenging as it requires not only achieving low rolling resistance in smaller size tyres (12″ to 13″) but also required to meet other critical vehicle performance parameters like ride, handling, NVH & durability. Effects of Tyre construction, rubber compound were analyzed to achieve lower rolling resistance and better durability of tyre. In addition, the factors affecting the rolling resistance of tyre like inflation pressure, load, and speed in smaller tyre sizes (12″ to 13″) are discussed in this paper.

Today's competitive environment in automotive industries worldwide demands high standard of Ride and Handling for customer satisfaction. As Maruti Suzuki is pioneer in manufacturing passenger car in India, and we are consistently designing and developing the vehicles to meet the customer requirements of good ride and handling parameters, thus creating Customer Delight. The vehicle structure is designed to meet requirements in terms of Ride, Handling, Safety and Durability. Integrity and functionality of the vehicle components are very important so that vehicle can sustain full service life. When the vehicle passes through bump or pothole, very high intensity forces are experienced on the body and various suspension parts. This may result in Body Cracks. CAE is extensively used to predict these body and suspension cracks in design stage. Ground tests and multi body dynamics (ADAMS) were used to collect road load profile and Forces, which served as boundary conditions for CAE analysis.