Thiagarajan Automobiles was established in the year 1956. It has been a major player in Petroleum, Tyres, Batteries and Weighing Bridges in South Tamil Nadu. T Auto, Tallakulam is the Flagship outlet of Indian Oil Corporation in the Madurai Division. T Auto is also the leader in Tyres with a focus on Car & Two Wheeler Tyres operating 2 Bridgestone Select showrooms. Also, it is the Distributor for Firestone and the OE Dealer Distributor for Yokohama for the entire Tamilnadu. T Auto started dealing in Exide from 1975 onwards. It has grown to be the biggest player for Exide in Tamil Nadu and the 5th largest in India. T Auto has become the official Distributor for Madurai from April 2022. T Auto and Truck weighing are synonymous. Having established a network of weighing bridges across southern Tamil Nadu, it is the leader in the field. The Chintamani & Palanganatham Branches enjoy the trust of Madurai merchants for decades.