How Many Smiles Per Gallon: 265/75r16?

I run 285s and a KDMAX Pro 9 tune, no gear needed with the tune. I have always put gears in my hotrods and big trucks back in the day when running 40s or 44 ground hogs and it was needed. Not the case with a tune, now considering I run a light 285 SL rated and a light 4Runner SEMA wheel.

 

Glad to hear this. Different folks certainly have varying options about gearing and transmission on these trucks. I'm really hoping I'll be content with mine when it comes in.

 

If your old tires were worn down pretty good then your computer was overestimating the mpg. The newer tires might be closer to 1.5-2" taller since they are new and a different size. Did you check your tire pressure to see what they are currently at? The colder weather and winter gas always has a big hit on my mpg. I would get 17-18 in the warm weather/summer gas and it drops to 13-14 in the winter. If you combine that difference with your tire size change it might sound correct. But I would think you've seen your mpg drop before now since we've had winter gas since late Sep. Can you post your last 4-5 months of records to see if it was already dropping off.

 

I have a 2020 SR V6 Dbl cab with 265/75R16 Cooper Evolution MT tires.Tire weight is 49lb each which is pretty lite. I get 20 to 20.5 on summer gas and around 19 on winter gas.