35's now...38's later (Gear Q)
 

Hey guys, I have 35's on the truck right now, I eventually plan on going to a 38" tire. I have a 3.55 limited slip in the truck right now. I would say my driving is 50% country roads (~55mph), 10% city and 40% highway.

I'm thinking 4.88, If I went this route, what would I be looking at MPG wise on the highway?? I'm getting about 13 now.


But I do drive about 4 hours to silver lake sand dunes, 4 hours to my camping spot and roughly 9 hours to the family in Tennessee, I take all these trips 1-2 times a year

Go with the 4.88s without a doubt. I bet you'll see a gas mileage increase.