I think your truck looks great with the 35's. Honestly from the factory, the HD trucks that come with 17' wheels look under tired to me.
I'm running 35x10.5r20's on my factory wheels.
I never noticed a difference in noise. MPG? Probably worse? I had the tires put on when the truck was pretty new so can't compare.
I'm getting about 20 MPG now and I'm fine with that,
Larger diameter tires will also give you a little extra ground clearance as well.
I went with Toyo AT3's in load range E.
(No D available in that size and I wanted something a little more stout than the factory P rated tires for trailer towing duties.)
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