3.73's and 35's check in
JK Enthusiast
Joined: Dec 2009
Posts: 242
Likes: 0
From: Indiana
JK Enthusiast
Joined: Oct 2010
Posts: 138
Likes: 0
From: Iowa
Originally Posted by _J__C_
Where the hell do you get 108 octane? And your jeep runs ok on it?
JK Enthusiast
Joined: Dec 2009
Posts: 227
Likes: 0
From: NYC, NY
i just got my jk lifted and new tires at first i had for loaners Dunlop Radial Mud Rover 315/70/17 with 3.73 and well can't say i was to happy with my jk, the tire where noisy and MPG drop to 9-10. I just got MY tire two day ago the Goodyear duratrac 315/70/17 and the changed was big noise when down, comfort and mpg when up to 13-14.5 "city/small high driving". driving with 3.73 and 35s is not bad not great but i can live with it
JK Enthusiast
Joined: Jun 2008
Posts: 117
Likes: 0
From: TN
i just got my jk lifted and new tires at first i had for loaners Dunlop Radial Mud Rover 315/70/17 with 3.73 and well can't say i was to happy with my jk, the tire where noisy and MPG drop to 9-10. I just got MY tire two day ago the Goodyear duratrac 315/70/17 and the changed was big noise when down, comfort and mpg when up to 13-14.5 "city/small high driving". driving with 3.73 and 35s is not bad not great but i can live with it
JK Newbie
Joined: Jun 2008
Posts: 82
Likes: 0
From: Orange County, CA
I went from 3.73 to 5.13's on a 2011 running a 4" lift and KM2's. My MPG has dipped to about under 11MPG for city and about 13" for highway.
And to be honest, I don't even notice the performance gain.
Don't know of something is up with my setup, but I've lost MPG and performance hasn't changed much.
I went with the best shop in town for install, so I'm not sure what's up.
I'm hoping the Superchip will fix both my MPG issue and add a little more power when it's released.
And to be honest, I don't even notice the performance gain.
Don't know of something is up with my setup, but I've lost MPG and performance hasn't changed much.
I went with the best shop in town for install, so I'm not sure what's up.
I'm hoping the Superchip will fix both my MPG issue and add a little more power when it's released.
Super Moderator
Joined: Jun 2011
Posts: 11,054
Likes: 85
From: Hendersonville, Tennessee
Originally Posted by achi10
I went from 3.73 to 5.13's on a 2011 running a 4" lift and KM2's. My MPG has dipped to about under 11MPG for city and about 13" for highway.
And to be honest, I don't even notice the performance gain.
Don't know of something is up with my setup, but I've lost MPG and performance hasn't changed much.
I went with the best shop in town for install, so I'm not sure what's up.
I'm hoping the Superchip will fix both my MPG issue and add a little more power when it's released.
And to be honest, I don't even notice the performance gain.
Don't know of something is up with my setup, but I've lost MPG and performance hasn't changed much.
I went with the best shop in town for install, so I'm not sure what's up.
I'm hoping the Superchip will fix both my MPG issue and add a little more power when it's released.
JK Super Freak
Joined: May 2009
Posts: 1,509
Likes: 1
From: New Orleans, LA
Originally Posted by Ryan0260
Doesn't sound right. Going to 5.13's from 3.73's should give a very noticeable change in power and driveability and should rev and accelerate much more quickly. Also 11 mpg sounds a little low for your setup. Not sure how you drive though...
JK Enthusiast
Joined: Feb 2011
Posts: 482
Likes: 0
From: Yorba Linda, CA
How many people here are actually running 3.73 gears and 35" tires?
I'm about to buy 35" KM2's and want to know how long I can get by with stock gears: not at all, 3 months, 6 months?
When my jeep goes into the shop I want to take care of a few things at once (gears, dif covers, c gussets, lca skids, axel sleeve). I'll need about 3 months to save.
In that time I will not be offroad, i'll be driving a max of 60 mph on super flat highways to and from work (30 miles a day).
I'm about to buy 35" KM2's and want to know how long I can get by with stock gears: not at all, 3 months, 6 months?
When my jeep goes into the shop I want to take care of a few things at once (gears, dif covers, c gussets, lca skids, axel sleeve). I'll need about 3 months to save.
In that time I will not be offroad, i'll be driving a max of 60 mph on super flat highways to and from work (30 miles a day).
AMen
JK Jedi
Joined: Oct 2010
Posts: 5,192
Likes: 3
From: REDONDO BEACH, CA
Originally Posted by AMen
I am runing 35 KM2s with 3.73s, when i installed the Superchip it runs fine. I was runing through the Grapevine at 75 - 80 with no problems. I will get all the other stuff I want before I do gears, this way if I decide to go 37 or 40 I wont waste the money.
AMen
