"Whenever Mahi is in Mumbai, we ride bikes together. I think he is a better biker than me. He is my closest friend whether it is from the cricketing world or from Bollywood," John said on BIG CBS PRIME's "India's Prime Icon".
John says that the Indian skipper is very grounded.
"A small town boy from Ranchi, he is very respectful. He loves his parents a lot and I feel that he is the best captain in the world," added the actor.
Dhoni will feature as one of the contenders on "India's Prime Icon", which shows works of popular icons from different walks of life.