6-speed tranny gear ratios?

[SportTractoF150]

So my question is in reference to adding 35" tires to the truck.

I know in the 2004-2008 trucks with the 4 speed transmission, 35" tires and 4.56 gearing was pretty much the standard and perfect combination to make up for the power loss and to preserve the transmission.

With the current 2009+ trucks with the 6 speed transmission, what would be the equivalent? I've got a 2009 Platinum sitting on 35's...have been for a year. Should I be concerned about hurting the transmission or it dying prematurely on me? I have been toying the idea around of regearing, even after I pick up the new Gryphon CS or CTS, but I'm not quite sure on:

1) if it's needed to save the transmission
2) which gear ratio would be suitable with the 6 speed transmission.


Thanks!