Instead of predicting this highly complicated ranking procedure I am sharing some important Data with you which will help you predict your Rank.
This is last three year's i.e. JEE MAIN 2013 , 2014 and 2015 Marks Rank Data.
Here marks are total after including normalized JEE MAIN and Board Marks
I expect the distribution this year also in line with 2015 data with a slight downward revision.Its too difficult to actually predict because of such large and diverse sample size. So its best to gauge your performance on basis of this data.
All the Best!!