One way to look at this is to think about the feasibility of the Arjun in the sub-continental (or for that matter Indian) context. IA thinks that T-90 is fully capable of handling the Pakistani armour threat...why is there a need for a heavier, more complex tank then?
Additionally anything above 55 tons requires infrastructure to be able to support it. This was one of the key things (in addition to the cost) that Pakistani evaluations of US and other western armour resulted in the Army going for lighter tanks.
The problem with having so much armour and weight on a tank is that you will have problems moving it about the country. If the Indian infrastructure supports it then its all fine (however this was one of the problems identified by the IA itself and I am not aware that the Indian railways or road networks have undergone any sort of major transformation in the past decade to address this problem) ...also having a pretty decent idea about what the infrastructure is like in the two countries of the South Asia, transportation etc. will continue to be a challenge.
With the T-90 program still running full steam ahead in India, I am not sure what that means for Arjun.
Additionally anything above 55 tons requires infrastructure to be able to support it. This was one of the key things (in addition to the cost) that Pakistani evaluations of US and other western armour resulted in the Army going for lighter tanks.
The problem with having so much armour and weight on a tank is that you will have problems moving it about the country. If the Indian infrastructure supports it then its all fine (however this was one of the problems identified by the IA itself and I am not aware that the Indian railways or road networks have undergone any sort of major transformation in the past decade to address this problem) ...also having a pretty decent idea about what the infrastructure is like in the two countries of the South Asia, transportation etc. will continue to be a challenge.
With the T-90 program still running full steam ahead in India, I am not sure what that means for Arjun.