What are your HIGHWAY mpg's?

[TejasRunner01]

BEFORE people start yelling at me for "not researching" hear me out. I have actually read 20+ threads that have anything to do with gas mileage and what I have found is that most of them are giving mixed city and highway MPG's. We all know that pure city driving is going to give dismal fuel economy even for bone stock 3rd gen. So what I want to start a thread for HIGHWAY only fuel economy.

Please list your answer in this format:

Year:
Tire Size:
Gear Ratio if you know it:
2WD or 4WD:
Modifications that affect MPG:
Current highway fuel economy:
Automatic or manual transmission:
4 cyl or 6 cyl:

:cheers:

 

[TejasRunner01]

Year: 1997
Tire Size: 30/9.5R15
Gear Ratio if you know it: 4.10
2WD or 4WD: 4WD j shifter
Modifications that affect MPG: Mild 2 inch lift
Current highway fuel economy: 20
Automatic or manual transmission: Automatic
4 cyl or 6 cyl: 6 cylinder

 

[19963.4lsr5]

97 Limited
Stock 265-70r16 coopers
4.30 with locking diff

17-20mpg on highway depending how late she is doing a dog transport.

97 SR5
Stock 265-70r16 Hancoks
4.10 ratio

19-21mpg driving 70-75mph

I get 21-23mpg driving my SR5 to work on 2 lane highways at 50mpg.


Sent from my iPhone using Tapatalk

 

[TejasRunner01]

Definitely decent MPG's there. Interesting that the 97 limited is getting less mpgs.. Thanks for the post. Keep it going!

 

[Hepar]

Year: 2001
Tire Size:265/75-16
Gear Ratio if you know it: 4:10
2WD or 4WD: 4WD
Modifications that affect MPG: Lift, bumper, sliders, tyres, supercharger
Current highway fuel economy: 19-20 (At around 65-70. I am curious what it would be if I drove for a distance on a relatively flat road at 55-60)
Transmission: Automatic
Engine: V6 w/ 2nd gen supercharger

 

[kolelt]

1997 5speed
4.30
285/75/15
Lifted
Fully armored
Highway, about 65-80mph. Around 12-15mpg.

 

[gamefreakgc]

Year: 1998
Tire Size: Stock, 265/75-16
Gear Ratio if you know it: 4.10
2WD or 4WD: 4WD of course!
Modifications that affect MPG: Supercharger, larger fuel pump, headers, etc.
Current highway fuel economy: 19 MPG's last I checked, about to get worse!

 

[4'running'26]

Year: 2000 SR5 Auto Trans
Tire Size: 245/75R16
Gear Ratio if you know it: 4.10
Modifications that affect MPG: None
Current highway fuel economy: 20-22

On my most recent trip out west (June and July) I put over 8,000 miles on the 4Runner and in purely highway driving I saw anywhere from 18.5 to 22.5.

If I disregard the heavy head or tail winds fillups I was typically right around 21. That's averaging 70-75 MPH.

*********************************************************

Year: 1999 SR5 Manual Trans
Tire Size: 265/70R16
Gear Ratio if you know it: 4.10
Modifications that affect MPG: None
Current highway fuel economy: Not sure yet

I will be heading from Ohio to Colorado for a little skiing at the end of this week. This will be the first highway trip with my 1999. I'm hoping for the best! I'll report back.

 

[kolelt]

Make it easy for everyone. If your lifted. With good size tires and armored. Your mpg will be shit. But at this point. You shouldn't care. Because it's a big toy

 

[octanejunkie]

Year: 1999
Tire Size: 265/70R16
Gear Ratio: 4.10
2WD or 4WD: 2WD
Modifications that affect MPG: 2-5 inch lift
Current highway fuel economy: 21-24 (Torque says 24.5)

 

[TejasRunner01]

Great input from everybody. I would love for this thread to continue getting bigger as it will hopefully be a one stop all thread for people deciding on what they want to do modification wise and how people with similar set ups are doing fuel economy wise. Keep it going!

 

[octanejunkie]

Great input from everybody. I would love for this thread to continue getting bigger as it will hopefully be a one stop all thread for people deciding on what they want to do modification wise and how people with similar set ups are doing fuel economy wise. Keep it going!

Hardly a scientific approach since something as trivial as tire pressure can affect MPG greatly, but I feel ya

 

[I_bRAD]

Year 1997
Gear ratio: unsure, but >3
4WD
Extreme stock height. 265/75/-16
rust holes and broken antenna

Best mileage 11.8 L/100kms.

 

[Riceye]

Year 1997
Gear ratio: unsure, but >3
4WD
Extreme stock height. 265/75/-16
rust holes and broken antenna

Best mileage 11.8 L/100kms.

So, just about 20 mpg. (19.9)

 

[TejasRunner01]

This is very interesting. There are threads that have spoken about going from stock 265/70R16s to 265/75R16 (32s) that their gas mileage plummeted. Considering that some of you with the 32s are getting nearly 20 mpg highway still is interesting. Maybe it is just in the city that 32s kill fuel economy?

 

[Hepar]

This is very interesting. There are threads that have spoken about going from stock 265/70R16s to 265/75R16 (32s) that their gas mileage plummeted. Considering that some of you with the 32s are getting nearly 20 mpg highway still is interesting. Maybe it is just in the city that 32s kill fuel economy?

Load rating play a huge roll. The rolling weight of a C load tire and an E load tire is significant.

 

[I_bRAD]

So, just about 20 mpg. (19.9)

Or well over 400000 rods/hogshead!

 

[Riceye]

Load rating play a huge roll. The rolling weight of a C load tire and an E load tire is significant.

I'll report back in a couple of weeks on this, but I just recently replaced my 265/70-16 Firestone LE2 SL load rated (2400# rated, 38# weight) with 245/75-16 Goodyear Duratrac load range E (3000# rated, 45# weight). I'll be taking a 4000 mile jaunt west from SE Wisconsin to Seattle to move my kids to Bozeman, MT leaving Christmas Day and returning roughly two weeks later. Depending how many days I spend snowboarding along the way.

The circumference of the Duratrac is almost spot on with that of the LE2. The unsprung weight and the rolling resistance of the tread should be the only factors. On the highway at 70mph I have always been in the 19-20 mpg range. I keep good records when I travel, and will follow up on this thread when I return in January.

 

[TejasRunner01]

Riceye I am looking forward to your response! Have a safe trip.

 

[Riceye]

This is very interesting. There are threads that have spoken about going from stock 265/70R16s to 265/75R16 (32s) that their gas mileage plummeted. Considering that some of you with the 32s are getting nearly 20 mpg highway still is interesting. Maybe it is just in the city that 32s kill fuel economy?

And, don't forget that the larger tires are now covering more miles than your odometer shows. This can be significant. Tire specs show revs/mile on most tire retailer websites. The larger the tire, the fewer revs/mile.