285/70/17 on stock rims?

[pavementends]

Its gonna be noticable. How much heavier are these over stock?

3-4 mpg is my guess.

I think you're spot on... I did drive the truck back home from the dealership on day #1 and remember getting 22 MPG on the freeway. I've done two 1,500 mile road trips with the truck since and averaged 19.5 MPG on both trips.

I think my stock tires were 38 lbs each and my LT285/70/17 Yokahama ATs are 56 lbs each.

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[tony72cutlass's']

I am getting a little bit of poke to which i am pleasantly surprised, i should have figured with the 10mm offset difference but they look bad-ass