Question about D2 axle and larger tires

[EK98]

I have a D2 axle code which I read means I have 4.10 gear ratio. I know nothing about gear ratios so my question is this: will running 32's or 265/75/16 kill my fuel economy/power?

From what I've read it seems like these are good gears to have for that tire size but I couldn't ever find a direct answer. I have WAR 153 shackles and a 2"TT so I think they should fit...

Thanks for any help!

 

[EK98]

Well now from what I've read it appears that 32" tires might actually be better for 4.10 gears than the stock tires are.

 

[Elessar65]

I have 4.10s with 32" tires and its great. Just get a tuner with a tune to reprogram the tranny shift points and speedo and you'll be golden.

 

[EK98]

Did it effect your fuel economy at all? From what I've read it seems like 31's are the ideal size for 4.10, which I think means it would get slightly better mpg, so 32's might bring it back down to where it is presently with stock tires? Or am I way off in thinking this?

 

[Elessar65]

I dropped a couple mpg, but its not a big deal.