Nitto Ridge Grapplers Loss of MPG?

Johnkn · Mar 7, 2019

10spdsoffury, Thanks, are yours the 315-70R or the 35x12.50 version?

Erjdrvr · Mar 7, 2019

rtmozingo said:
Some of us don't like throwing away money for no reason. Assuming 12k miles a year, a difference in 2 mpg with cost of premium at $3 is almost $300. That is the cost of entry for TRR. Sure, I realize most that can afford a Raptor consider this trivial, and to some degree it is. But more money is more money, and if it wasn't a substantial factor for most people, car companies wouldn't be driven to make engines more fuel efficient.

The reality is most of our time is spent on pavement, except for the select lucky few. So, things like daily driveability and fuel economy make a difference. And that also translates to offroad performance, like it or not.

If you are calling me out, at least call me out correctly. As an engineer, I understand the concept of tradeoffs, and therefore set criteria for my next tire. Everyone does this to some degree, although my research is a lot more rigid than most others, as I'm aware. 2 lbs per tire was about the limit of what I would accept from an alternative tire - 5 lbs per corner translates to about 90lbs overall, and if you want to pretend that isn't significant for on and offroad performance, than you're welcome to do so, but I prefer to deal with facts.

This site has been a cesspool for many years. Most of the reasonable people left a long time ago. Only reason I stick around is some of the newer owners don't know any better, and even in a bog you can find some valuable things from time to time.

I agree! What's a better site?

Sent from my SM-N960U using Tapatalk

Truckzor · Mar 7, 2019

EricM said:
If you are calling me out, at least call me out correctly. As an engineer, I understand the concept of tradeoffs, and therefore set criteria for my next tire. Everyone does this to some degree, although my research is a lot more rigid than most others, as I'm aware. 2 lbs per tire was about the limit of what I would accept from an alternative tire - 5 lbs per corner translates to about 90lbs overall, and if you want to pretend that isn't significant for on and offroad performance, than you're welcome to do so, but I prefer to deal with facts.

Couldn't agree more that every decision we make with these trucks involves a compromise. I've certainly had to make my fair share of those.

But what is your definition of significant? Because if 5 pounds per corner is significant, then trucks with the beadlock capable wheel option would perform significantly worse both on and off road vs. trucks with the base wheels. And if 90 pounds of sprung weight is significant, then base model trucks would perform even more significantly better than 802a trucks with all the options. You're talking about a, what, 1.5% difference in weight? Or 14 gallons of gas? How much better/worse does your truck really perform with these differences?

Erjdrvr said:
I agree! What's a better site?

Sent from my SM-N960U using Tapatalk

This site from inception through about December of 2015.

ICEMAN 316 · Mar 8, 2019

Johnkn said:
Anyone else actually running 315-70r-17 Ridge Grapplers have input?

Again, I would expect some small downward trend running these tires over the OEM BFGs, but the report of -3 MPG seems excessive and difficult for me to believe.

Simply looking for additional real-world feedback.

thank you

I installed my Ridge Grapplers (315-70-17) about a month ago and my mpg is at 13.4. Stock KO2 I was getting 13.5. I drove about 1200 miles on the Nitto RG and 1300 miles on the KO2.

Johnkn · Mar 8, 2019

Thank you Iceman......

10SpdsOfFury · Mar 8, 2019

Johnkn said:
10spdsoffury, Thanks, are yours the 315-70R or the 35x12.50 version?

Mine are the 315-70-17 and they are 70lbs and the 35-12.5 are 75lbs. I accepted 5lbs more then the BFG but 10lbs is a “ negative ghost rider the pattern is full”.

Hawaiian Time · Mar 8, 2019

mp_tx said:
Do most Raptor owners really worry about this stuff? Slight variations in MPG after swapping tires? You as the owner purchased a lifted, off road ready 4wd truck with big tires. Was MPG an original factor in your purchase decision? This sounds like a question I see on the TDI forums when researching my wife’s commuter car.

I cannot understand about 50% of the posts created on this website. I would like to see more offroad pics, trip reports, and day to day issues.

Hey mp_tx,

I find 90% of what I read here on FRF interesting and useful. I bought my Raptor for the ultimate 4x4 capability, its performance as a full size pickup, its luxury, and tech. I did NOT buy it as a status symbol or trophy truck. It is a large investment in a high performance vehicle. As such most of us here on FRF are very interested in those little things that improve, affect, or hurt our Raptors' performance, and factory build issues.

There is no need for Trolls on this site, but they come anyway. If you don't like our posts, go to another forum. As for pictures of us using and abusing our trucks, we will probably post more of that as time goes on. Got to build up the truck first. There are lots of Off Road magazines where you can see that sort of thing. I assure you, these Raptors can handle anything you throw at us except narrow Mountain Goat trails.

If you are looking for Shock and Awe Sensational off road photos, you wont see much of that here. Most of us do not want to damage our $75k trucks.

Aloha, HT

Johnkn · Mar 8, 2019

10SpdsOfFury said:
Mine are the 315-70-17 and they are 70lbs and the 35-12.5 are 75lbs. I accepted 5lbs more then the BFG but 10lbs is a “ negative ghost rider the pattern is full”.

thanks for confirming.

Hawaiian Time · Mar 8, 2019

jzweedyk said:
OK, call me stupid.

Boyd07. Come to Las Vegas in July and tell me if you think A/C is stupid! You can drive behind me on the desert trail with your windows open in 117 degrees!

Dont be a H8R.

Hawaiian Time · Mar 8, 2019

Aloha,

I meant to respond to the original tire MPG question but got side tracked on some of the Troll / H8R posts.

I replaced my stock KO2 335x70xR17 KO2's with Firestone Destination MT2 Mud Tires size 35x12.5xR17 on my 2017 Raptor SCREW. On the Stock tires I was getting 14 to 15 City, 18 to 19 Hwy. With the mud tires I'm getting only 12 to 13mpg City and 16 to 19mpg Hwy.

Bigger tires can lower MPG in several ways:
1. More aggressive tread pattern = more rolling resistence.
2. Taller tires will raise your effective axle gear ratio from 4.10 to maybe 4.0 or 3.9 or.... The taller the tire, the bigger the change. This will increase power (lower mpg) needed to start off the line and for hill climbs. But it can actually improve Hwy mpg if not eaten up by the other factors.
3. Wider larger tires have more wind resistence.
4. Heavier tires will take more power to accelerate mostly lowering City MPG.
5. Stickier Tread Compound = more rolling resistence that will lower both City and Hwy MPG.
All of the above are cummulative that combined can lower your City MPG by 2 to 4 mpg City and 1 to 3 mpg Hwy on an otherwise stock Gen2 Raptor.

HT

Nitto Ridge Grapplers Loss of MPG?

Johnkn

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