Guide "How to tell the difference between T-90 and T-90A". These are the most visible differences between T-90 and T-90A.
I made this guide because I haven't seen any on this topic and majority of people don't even know there are these two variants (there are more) or don't know what is different between them, so I wanted to enlighten people.
This guide is not 100% true because there are some "hybrid" T-90 which incorporate parts from both models, for example T-90A chassis (body, new tracks and engine)
with T-90 cast turret = T-90K http://live.warthunder.com/post/599752/en/
I didn't incorporated export(T-90S) models because they can be distinguished very easily by the complete lack of Shtora-1 EOCMDAS or by the missing MTShU-1-7 modulator such as T-90SA for Algeria, Armenia and Azerbaijan.
I am open to any suggestion or to constructive criticism.
I hope this will help.