Big Tires DID NOT Kill My Fuel Economy. But Why?? (Not Clickbait)

How I achieve 17.2 MPG highway with 37s on my 2007 Tundra RCSB.
20% off onX OffRoad: geni.us/onXOffRoad

Thank you ‪@msoverland‬ for having me on this amazing trip!

0:00 The Setup
2:50 Day 1
8:34 Day 2 & 3
11:01 Day 4
15:59 Why Is My MPG This Good?