Tough Rides: China

After surviving India's dangerous mountain roads, the Pyles head to Amritsar, home to the peaceful Sikh Golden Temple and the volatile India-Pakistan border.

Colin and Ryan Pyle are in Rajasthan, famous for brightly painted palace hotels. The first stop in the heat of the Indian desert is the world-famous rat temple in Bikaner.

On their journey down the Indian south-west coast, the Pyle brothers visit Mahindra's mega car factory, and Colin takes a test to become an automotive worker.

Madurai is a 2,000-year-old city and one of the world's oldest that is still inhabited. As the journey continues north up the east coast of India, the carnage on the roads continues.

Colin and Ryan Pyle take off from Shanghai on their two well-kitted-out BMW bikes for an epic adventure.

Ryan and Colin bike to Inner Mongolia, bunking down for a night in a yurt village, before visiting one of China's largest wind farms.