Cjb1979

I have done a ton of reading, but cannot seem to get an idea of what to expect for fuel mileage for a crew cab AT4 with a 6.2 and 35” tires. Still trying to decide between a 34 (275/65/20) or a 35/11.5/20, either size would be a Nitto Ridge Grappler. I ran the 275/65/20 on my Silverado with the 5.3/8speed combo and mileage wasn’t much different from stock. So what does everyone say?

Here is my 15 LTZ Custom Sport.