Lamborghini found that Ferrari's cars were equipped with inferior clutches, and required continuous trips to Maranello for rebuilds; technicians would secret the car away for several hours to perform the work, much to Lamborghini's annoyance. He had previously expressed dissatisfaction with Ferrari's after sales service, which he perceived to be substandard. Lamborghini brought his misgivings to Enzo Ferrari's attention, but was dismissed by the notoriously pride-filled Modenan. After successfully modifying one of his personally-owned Ferrari 250 GTs to outperform stock models, Lamborghini gained the impetus to pursue an automobile manufacturing venture of his own, aiming to create the perfect touring car that he felt no one could build for him. Lamborghini believed that a grand tourer should have attributes that were lacking in Ferrari's offerings, namely high performance without compromising tractability, ride quality, and interior appointments. A clever businessman, Lamborghini also knew that he could make triple the profit if the components used in his tractors were installed in a high-performance exotic car instead.