12-13 mpg normal with my setup?

I can't speak for the 03+ trucks but I believe that the base or SR5 trucks came with 245/70s, and Limited or TRD package trucks got the 265/70s. I believe on my window sticker it shows that the 265/70 R16s came with the TRD package. Or the Toyota website, I can't remember where. It says so somewhere though. Maybe I'll go look at my original spare.

I could be wrong but I thought that all 00-02 trucks came with 16" wheels, and 03+ had optional 17"s.

 

I have read that the truck will adjust over time to the new sensors etc.. Is this true?

 

'03 come with 265/70 R16. Mine is SR5.

 

Sure, it's totally possible it will adjust. It's also possible the truck will suddenly run like ass until it finally re-acclimates itself because the new sensors are reading wildly different. Generally speaking, it's best to force a relearn by popping off negative batt cable for 10 minutes. Force the truck to start over.

 

It’s interesting, after every MPG-influencing change I’ve made, within 2-3 tanks of gas, I’m back to where I was.

I really expected to see a more radical change in mpg back in September after lifting the truck, knowing my tire size was increasing 5% in diameter and probably 20% or more in weight.

Assuming I’m figuring that percentage of change correctly? I’m using 100 - (oldDiameter/newDiameter), putting me at 5% change, i.e. 100 - (30.6/32.2), remembering our PEMDAS, I’m figuring my odometer is logging 5% lower miles (right?), yet … taller truck, heavier tire, logging fewer miles per tank, and more weight in the back with the cap… looking back at my 80/20 city/hwy driving, over early the entirety of 2023, I’m still in the range I’ve pretty much always been, save for some maintenance action I took here or there.

Weird.

 

My 3400 5spd 4x4 with 4.10 gear gets 21.7mpg average

 

@shifty` - what app are you using to track your mileage?

 

Road Trip LE

 

The non-TRD OR package early models came with 245/70/16 tires on steelies or Patricks. The TRD OR upgraded tire was a BF Goodrich Trail TA in 265/70/16 on Patricks. There was no 17" tire option on the early models.