General Tires Grabber Red MPG - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > General Jeep Discussions > Tires & Wheels

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-19-2015, 01:02 AM
Thread Starter
  #1
Jeeper
 
Join Date: Dec 2012
Location: Los Angeles
Posts: 18
General Tires Grabber Red MPG

So I had stock 32 inch tires on my 2011 Wrangler Unlimited and was getting 17-21MPG on freeway no problem. Put these 35x12.5x17 on my wrangler and left the old spare (gonna remove and put it on when I take it camping, etc.) and now I'm getting 11-12.5 MPG on the freeway... this seems like a crazy difference. Is this normal?

DominicScott is offline   Quote
Old 10-19-2015, 10:30 AM   #2
Jeeper
 
krisbman's Avatar
 
Join Date: Feb 2012
Location: Cheshire Oregon
Posts: 10,020
Quote:
Originally Posted by DominicScott View Post
So I had stock 32 inch tires on my 2011 Wrangler Unlimited and was getting 17-21MPG on freeway no problem. Put these 35x12.5x17 on my wrangler and left the old spare (gonna remove and put it on when I take it camping, etc.) and now I'm getting 11-12.5 MPG on the freeway... this seems like a crazy difference. Is this normal?
you need to realize you went up in tire size which effectively changed your overall drive ratio. Plus 35" red letter grabbers are close to 80lbs a piece without wheels. Bigger tires/ larger footprint/ higher rolling resistance/ more mass= less mpg

krisbman is offline   Quote
Old 10-19-2015, 03:21 PM
Thread Starter
  #3
Jeeper
 
Join Date: Dec 2012
Location: Los Angeles
Posts: 18
Quote:
Originally Posted by krisbman View Post
you need to realize you went up in tire size which effectively changed your overall drive ratio. Plus 35" red letter grabbers are close to 80lbs a piece without wheels. Bigger tires/ larger footprint/ higher rolling resistance/ more mass= less mpg
thought it would drop but not that much! thanks!
DominicScott is offline   Quote
Sponsored Links
Advertisement
 
Old 10-20-2015, 12:41 PM   #4
Jeeper
 
IgnitedSoul's Avatar
 
Join Date: Jul 2014
Posts: 803
Quote:
Originally Posted by DominicScott View Post
thought it would drop but not that much! thanks!
Did you recalibrate your speedometer for the larger tires?
IgnitedSoul is offline   Quote
Old 10-20-2015, 02:57 PM   #5
Jeeper
 
SoDakSooner's Avatar
 
Join Date: Jun 2015
Location: Okieland
Posts: 2,172
Quote:
Originally Posted by IgnitedSoul View Post
Did you recalibrate your speedometer for the larger tires?
This^^^^

I ran mine without recalibrating for a while and it showed 15 mpg typically or less, and I was 5 mph off.

After recalibrating with flashcal, I am right on my GPS speed and get anywhere from 16.5 to 18.5 mpg (I never really exceed 65 mph....cause I'm cheap that way)

I run mickey thompsons though, which I believe are a tad bit lighter.
SoDakSooner is offline   Quote
Old 10-20-2015, 09:15 PM   #6
Jeeper
 
IgnitedSoul's Avatar
 
Join Date: Jul 2014
Posts: 803
Quote:
Originally Posted by SoDakSooner View Post
This^^^^ I ran mine without recalibrating for a while and it showed 15 mpg typically or less, and I was 5 mph off. After recalibrating with flashcal, I am right on my GPS speed and get anywhere from 16.5 to 18.5 mpg (I never really exceed 65 mph....cause I'm cheap that way) I run mickey thompsons though, which I believe are a tad bit lighter.
What Mickey Thompsons are you running? I'm considering pulling the trigger on LT285/70R17. As much as I like 35's the 33's serve my needs better.
__________________
2015 JKU Rubicon Hard Rock: Mopar 2" lift w/ AEV geo brackets, Warn Zeon 10s on Maximus-3 mounting plate with Factor 55 FlatLink, Maximus-3 low profile hoop, J.W. Speaker 8700 J headlights / 6145 J fog lights w/ Maximus-3 brackets / 279 J tail lights, AntennaX 13", GraBars, Teraflex HD hinged carrier, Rigid D2's, Cobra 29 LX
IgnitedSoul is offline   Quote
Old 10-20-2015, 09:58 PM   #7
Jeeper
 
IgnitedSoul's Avatar
 
Join Date: Jul 2014
Posts: 803
Quote:
Originally Posted by IgnitedSoul View Post
What Mickey Thompsons are you running? I'm considering pulling the trigger on LT285/70R17. As much as I like 35's the 33's serve my needs better.
I assume the 35's but just checking.
__________________
2015 JKU Rubicon Hard Rock: Mopar 2" lift w/ AEV geo brackets, Warn Zeon 10s on Maximus-3 mounting plate with Factor 55 FlatLink, Maximus-3 low profile hoop, J.W. Speaker 8700 J headlights / 6145 J fog lights w/ Maximus-3 brackets / 279 J tail lights, AntennaX 13", GraBars, Teraflex HD hinged carrier, Rigid D2's, Cobra 29 LX
IgnitedSoul is offline   Quote
Old 10-21-2015, 06:08 PM   #8
Jeeper
 
SoDakSooner's Avatar
 
Join Date: Jun 2015
Location: Okieland
Posts: 2,172
I have 305/70/R18's, so 35's. MT Baja ATZ's, the older ones not the p3's. Had MTZ's before and liked those other than the fact they were 20's.
SoDakSooner is offline   Quote
Old 10-22-2015, 10:30 AM   #9
Jeeper
 
WXman's Avatar
 
Join Date: Jun 2012
Location: Central Kentucky, USA
Posts: 2,779
The General Grabber is one of the heaviest tires on the market. They will obliterate your fuel economy. That's something you have to consider.
__________________
Current Jeep: 2020 JT Sport S, Firecracker Red, 8-speed, 3.6L, Daystar lift, 35" Patagonia M/T, Tactik wheels, MAX TOW, M.O.R.E. dead pedal, Supernova V.4 bulbs, etc.
WXman is offline   Quote
Old 11-01-2015, 04:34 PM   #10
Jeeper
 
Join Date: Jul 2015
Posts: 98
I'm in the same situation. My Jeep is a daily driver commuting 50 miles round trip.
I'm looking for 35x12.5r17 for my Jk. I was thinking about General Grabber AT2. What do you guys think

Tire Rack spec
General Grabber AT2 67lbs http://www.tirerack.com/tires/tires....RatingsReviews

GY KO2 at 66lbs http://www.tirerack.com/tires/tires....omCompare1=yes
Dproto09 is offline   Quote
Old 11-01-2015, 04:40 PM   #11
Jeeper
 
CJ7nvrstk's Avatar
 
Join Date: Jul 2012
Location: Prosper, TX
Posts: 707
Tire rack did a study showing increased tire height had a much more significant impact on overall mileage than weight.

That being said, a heavy 35" tire like the Grabber will have more of an impact on mileage than something lighter in the same diameter like a Pro Comp, Goodyear, Cooper, or DFG.
__________________
11 JKU
85 CJ

RED Friday. Remember Everyone Deployed
CJ7nvrstk is offline   Quote
Old 11-01-2015, 08:09 PM   #12
Jeeper
 
Join Date: Oct 2015
Location: Kansas City
Posts: 57
I have the heavy Grabbers, 35" with 3" lift. I do outside sales and drive city and highway.
I get 16.2mpg. I'm good with that.
Jules.1 is offline   Quote
Old 11-01-2015, 08:12 PM   #13
Jeeper
 
IgnitedSoul's Avatar
 
Join Date: Jul 2014
Posts: 803
My all around average is 16.01 with stock Rubicon KMs and that's with a light foot... That's some road trips, some wheeling trips, and DD duty on a 6 mile mostly highway drive to work.

__________________
2015 JKU Rubicon Hard Rock: Mopar 2" lift w/ AEV geo brackets, Warn Zeon 10s on Maximus-3 mounting plate with Factor 55 FlatLink, Maximus-3 low profile hoop, J.W. Speaker 8700 J headlights / 6145 J fog lights w/ Maximus-3 brackets / 279 J tail lights, AntennaX 13", GraBars, Teraflex HD hinged carrier, Rigid D2's, Cobra 29 LX
IgnitedSoul is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 07:55 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Jeep, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.