Will Aamir Khan's Dangal be a threat to South Indian films?

Aamir Khan's highly anticipated biographical drama "Dangal" is hitting the screens on Friday. With the film set for release in Tamil and Telugu too, trade experts predict whether it can succeed in stirring up a box office storm in the southern market.In Tamil Nadu, the Nitesh Tiwari-directed wrestling drama is gearing up for release on approximately 120 screens, and this includes in Hindi and Tamil.Entertainment industry tracker Sreedhar Pillai says "Dangal" will go up against two Tamil releases - "Kaththi Sandai" and "Balle Vellaiya Theva".