265's on a 2.7L

Is anyone running 265 75 16 Firestone Destination AT's on a 2.7L automatic 4x4? I'm thinking of putting these on my truck and was wondering if they affected performance or gas mileage. I'm staying away from LT tires due to weight so standard load are the ones I'm looking at.
Thanks.

 

i run 265 75 dunlop radial rovers. took a very slight hit on mpg's but not too bad, they look real good and havent had any rubbing issues

 

Did you get the LT or standard load?

 

Just another suggestion from someone who's done a lot of research on it. I have the 2.7 as well. I ended up going with the 265/75r16 Hankook Dynapro ATM's in P rated. They were only 6 lbs per tire heavier than the stock Dunlops. When you consider the fact that my stock Dunlops were 245/75r16's that's really impressive. I'm seeing a little drop in MPG's but I also switched right before the winter so I'm sure a lot of my drop is due to the cold weather and winter gas.

 

I'm running 265/70/17 Dynapro ATM's on my 2.7 5 speed and I didn't really feel any power loss, being a manual transmission really helps though.

 

Thanks for the info guys. I'm gonna stick with a P rated tire because as you said they are much lighter than LT tires. I would rather have a slightly larger lightweight tire than a heavy duty LT tire since I mostly drive on road.

 

I had 265 75 16 Firestone Destination AT's on my truck and i did find that it robbed me of performance and HP. I had them on for a year and then gave them to by brother who had a TRD, and went back to the 245 75 16 Firestone Destination AT's, and the truck runs a hell of a lot better. I live in Colorado up past 7000 feet and I will NOT run anything but 245 75 16 on my truck since i need all the HP that i can get from the little truck.

My option is go with the 245 75 16 Firestone Destination AT's, they are a good tire.