Quote Originally Posted by screaminchicken View Post
My 4.10's on a 30 inch tire actually improved city mileage and didnt affect highway any measurable amount.
Same boat as you in my old 06 RCSB(in Sig pic). But in my new truck I do much more highway. It's between 4.30 and 4.56, I think 4.88 will be too much gear for me personally. I don't plan on more lift/bigger tires.