Lower Gearing for better mpg

First off, mpg in the 3rd gens is what it is. I'm fine with it, but given the opportunity and resources, a lower gear ratio would almost certainly benefit the highway mileage of our gas guzzling beasts.

Has anyone looked into this or actually had a different set of gears installed?

Effects on city driving?

Effects on off-road capability?

I'm not that savvy with the total ins and outs of gearing.
Any gear heads with proper knowledge chime in.

 

There is an entire post. 4.88 Gearing by Nitro is all that is available right now. Seems like the MPG's get better especially if you have 33" or larger tires. My truck is going in Monday to have it done.

https://www.tacomaworld.com/threads/installed-4-88-gears-in-my-2016.455190/

 

What is the original factory setting?

 

18-20 MPG is "Gas Guzzling?? I've never gotten less than 18 average per tank.

G.

 

Lower gearing? You mean numerically lower?

 

Low gearing is higher number. Lower number gears would make no sense with this truck. 2300 RPM is 100mph in 6th from the factory. You'd never use 6th gear! Factory gearing is 3.909.

 

That's what I was looking for, thanks.

 

It's the best thing I've done to mine!

 

No.

And even if it did, and you could stand the drivablity factor, work a spread sheet to figure the ROI on the parts/labor based on MPG improvement.

You can actually work it out with the tire calculator if you care to.

 

After adding oversized tires, the 4.88s gave me 3-4MPG gain over stock gearing. It also nearly eliminated the trans hunting for the right gear. Before the regear, but wth the 285/70s, it would shift 6->4 with anything over about 5% throttle, very annoying.

 

Right on. That trans hunting is what I'd like to alleviate.

 

What did you mpg go from to?

 

My driving is pretty inconsistent so it's hard to say, but before regearing I'd see 10-13, now I rarely see under 15.