Note: Air India does NOT operate A320 - . .Indian Airlines (IAC) does though.
AFAIK - ACN for the normal 2 wheel bogey is 41, but with a 4 wheel bogey, that goes down to 22. Initially IAC wanted to operate the 320 to remote airports in NE India - . .however those airports are now served by 737-200 (operated by IAC low-fares subsidiary), and spares for the 4 - wheel bogey are hard/expensive to procure, so IAC is slowly converting to the regular 2-wheel config.