Mpg issues with Bilstein front lift?

[brockvond]

Novitiate here, come to worship at the TR4 altar. I want to assure all that I've done the requisite search before asking this question, to avoid group shaming or reprisal, and I couldn't find any answer or clear direction. I'm still weighing the pros and cons of installing front Bilstein 5100's above stock setting on my 2016 sr5p, which I'd likely set at .85" if I install them. Has anyone running p rated, stock sized tires who has installed front 5100s above stock setting noticed or documented mpg loss, not likely attributable to something else (eg monster roof rack, bumper, etc.)? The reason I ask is that one of the theories about why Toyota has designed the 4Runner with a front rake is to improve aerodynamics and thus mpgs, presumably.

 

[Antman]

Novitiate here, come to worship at the TR4 altar. I want to assure all that I've done the requisite search before asking this question, to avoid group shaming or reprisal, and I couldn't find any answer or clear direction. I'm still weighing the pros and cons of installing front Bilstein 5100's above stock setting on my 2016 sr5p, which I'd likely set at .85" if I install them. Has anyone running p rated, stock sized tires who has installed front 5100s above stock setting noticed or documented mpg loss, not likely attributable to something else (eg monster roof rack, bumper, etc.)? The reason I ask is that one of the theories about why Toyota has designed the 4Runner with a front rake is to improve aerodynamics and thus mpgs, presumably.

ANY change you make; lift, tires, rack, etc. will reduce fuel mileage. Nobody can give you a number (though they will try, lol) but it will definitely change.

If you are worried about it, don't do it.:becky:

 

[brockvond]

Becky? That's dirty...

 

[jmarthsr]

I'm getting 18.1 on the onboard computer. I haven't reset it in 6 months. Mostly
city back and forth to work 10 miles each way 40 mph, 7 traffic lights, with bilsteins set to .85 and stock tires on my 2014 TEP.

 

[philsey]

1. likely set at .85" ...
2. running p rated, stock sized tires ...
3. mpg loss ...

What [MENTION=65614]Antman[/MENTION] said ... however IMO these changes would have minimal effect. (Especially using P-rated tires).

1. Yes, I did
2. Yes, I do.
3. No, I didn't.

I run a very consistent 17.5 - 17.9 mpg overall. I get 20 mpg hwy @ 75 and have seen as high as 24 mpg putting along at 55 flat hwy no wind. I do drive like an old lady tho.

 

[brockvond]

ANY change you make; lift, tires, rack, etc. will reduce fuel mileage. Nobody can give you a number (though they will try, lol) but it will definitely change.



If you are worried about it, don't do it.:becky:

I guess I wonder how Toyota can estimate the same EPA mpg figures for TDRP and SR5 4wd, where both vehicles share the same engine, and the TRDP has more aggressive oem tires and a suspension package with more front lift than the sr5 4wd.

 

[ST1FLER]

I guess I wonder how Toyota can estimate the same EPA mpg figures for TDRP and SR5 4wd, where both vehicles share the same engine, and the TRDP has more aggressive oem tires and a suspension package with more front lift than the sr5 4wd.

its the same damn truck. the 1" lifted front doesnt affect MPG and the tires albeit an AT tire is a very mild AT tire and the same size.... not enough to make a difference

 

[Jetboy]

I guess I wonder how Toyota can estimate the same EPA mpg figures for TDRP and SR5 4wd, where both vehicles share the same engine, and the TRDP has more aggressive oem tires and a suspension package with more front lift than the sr5 4wd.

If a vehicle is close - the EPA lets them use it even if it's not exact. And if an option has a 30% take rate - it counts. So for example the tacoma is tested with the tonneau cover even though most of them don't have one. They only need to have 30% go off the lot with one to count it.

 

[mrevilandy]

I had the 6112 on the highest setting and didn't see any lost in mpg really. The biggest difference were tires.

 

[T5RUNNER]

The reason I ask is that one of the theories about why Toyota has designed the 4Runner with a front rake is to improve aerodynamics and thus mpgs, presumably.

There is not really a theory. Yes, a lower vehicle will have slightly less drag. But the reason the 4runner is higher in the back, just like every truck, is that it is designed to be able to carry load. The whole idea of leveling a truck is just a styling trend. To me, leveling is advertizing that you intend to drive your truck around empty all the time. Of course you should mod your truck the way you like, just recognize that you are not "fixing" a design flaw or anything.

 

[delloro]

I installed a 2" front lift and a low pro roof rack and last .5 or .6 mpg.

And that is gospel.