Sunrider Top on 2012 JKU - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-13-2012, 03:21 PM   #1
Jeeper
 
Alpinejku's Avatar
 
Join Date: Dec 2011
Posts: 78
Sunrider Top on 2012 JKU

Was told by the dealer that if I have the front part of the top open (folded back) that the owners manual states "not to exceed
45 mph with the back window in". I have searched the OM and can't find anything.
I had a 2010 JKU and never had a problem on the highway with the front open.
Any comments will be appreciated.
Don

__________________
Don
Alpinejku is offline   Quote Quick Reply
Old 03-13-2012, 03:25 PM   #2
Jeeper
 
dodge's Avatar
 
Join Date: Jan 2012
Location: Phenix City, Alabama
Posts: 166
Hope thats not correct I had mine open this past weekend and was going a lot more than 45mph. Didnt seem to have any issues with the back window.

__________________
2012 Sport 2dr black
dodge is offline   Quote Quick Reply
Old 03-13-2012, 03:29 PM   #3
Jeeper
 
Alpinejku's Avatar
 
Join Date: Dec 2011
Posts: 78
Sounds like dealer BS to me.
__________________
Don
Alpinejku is offline   Quote Quick Reply
Old 03-13-2012, 03:29 PM   #4
MTH
Jeeper
 
MTH's Avatar
 
Join Date: Oct 2010
Location: North Carolina
Posts: 8,553
Yes, it's (almost) correct.

My 2010 manual states on page 234 that: "If you are going to be driving faster than 40 mph (64 km/h) with the Sunrider feature open, it is recommended that you remove the rear window of the vehicle."

This is so the rear window doesn't operate like a parachute. I think it's more of a long-term-wear-and-gas-mileage thing than a you're-going-to-have-an-immediate-catastrophy thing.

All you need to do is unzip the window so that it drops into the cargo area. Takes less than a minute.
__________________
Mike
2010 JKU "Mountain" Edition
TeraFlex 2.5" Coil Lift : Old Man Emu Nitrocharger Shocks : 33x12.5R15 Goodyear DuraTracs : 15x8 Black Rock 909s : Other Stuff . . .
MTH is offline   Quote Quick Reply
Old 03-13-2012, 03:31 PM   #5
Jeeper
 
Dbar71's Avatar
 
Join Date: Sep 2010
Location: Chatham, IL
Posts: 58
Ya had mine back and back window in, and did 80 ony highway this morning... It ripped the whole top off and caused a major wreck..... Just kidn but I did have it back and did 80 with no problems.
__________________
Go Cubs Go...
Dbar71 is offline   Quote Quick Reply
Old 04-13-2012, 11:58 AM   #6
Jeeper
 
drshaws's Avatar
 
Join Date: May 2011
Location: North Shore, MA
Posts: 135
I'm actually going to start keeping notes on airflow in various parts of the vehicle.

E.g. - amount of noise/wind/etc. in a JKU with the sunrider open and:
1. Rear window removed, all windows up
2. Rear side windows removed, all windows up
3. Just rear windows down
4 & 5 - same as 1 & 2 but with rear windows down
Etc. (

I definitely noticed that with the hard top on, it was actually more pleasant with the panels off and the front windows up, than with the panels on and front windows down. I think it's the noise from wind blowing between the roll cage and the doors.
drshaws is offline   Quote Quick Reply
Old 04-13-2012, 12:05 PM   #7
Jeeper
 
Greg_2012_JKU's Avatar
 
Join Date: Mar 2012
Location: Michigan
Posts: 609
I have used mine with the back window in numerous times driving 65-75mph on Interstate and have not had any issues. The only time I took it out was when we had 15-25mph wind gusts outside...
Greg_2012_JKU is offline   Quote Quick Reply
Old 04-13-2012, 02:15 PM   #8
MTH
Jeeper
 
MTH's Avatar
 
Join Date: Oct 2010
Location: North Carolina
Posts: 8,553
Quote:
Originally Posted by Greg_2012_JKU
I have used mine with the back window in numerous times driving 65-75mph on Interstate and have not had any issues. The only time I took it out was when we had 15-25mph wind gusts outside...
Of course you can do it, you just shouldn't. I'd expect it hits your gas mileage negatively and it probably would, eventually, cause some premature stretching in the rear window area. But yeah, the jeep doesn't burst into flames or anything. (At least, not until after it's parked.)
__________________
Mike
2010 JKU "Mountain" Edition
TeraFlex 2.5" Coil Lift : Old Man Emu Nitrocharger Shocks : 33x12.5R15 Goodyear DuraTracs : 15x8 Black Rock 909s : Other Stuff . . .
MTH is offline   Quote Quick Reply
Old 04-13-2012, 03:30 PM   #9
Jeeper

WF Supporting Member
 
kbwwolf's Avatar
 
Join Date: Sep 2011
Location: Wisconsin
Posts: 12,179
Quote:
Originally Posted by MTH View Post
Of course you can do it, you just shouldn't. I'd expect it hits your gas mileage negatively and it probably would, eventually, cause some premature stretching in the rear window area. But yeah, the jeep doesn't burst into flames or anything. (At least, not until after it's parked.)
Where did that comment come from? Are Jeeps catching fire or something? Please share any knowledge you may have on this matter...
__________________


"What we see depends mainly on what we look for."
—John Lubbock
kbwwolf is offline   Quote Quick Reply
Old 04-13-2012, 07:46 PM   #10
MTH
Jeeper
 
MTH's Avatar
 
Join Date: Oct 2010
Location: North Carolina
Posts: 8,553
Quote:
Originally Posted by kbwwolf

Where did that comment come from? Are Jeeps catching fire or something? Please share any knowledge you may have on this matter...
I've heard things . . .
__________________
Mike
2010 JKU "Mountain" Edition
TeraFlex 2.5" Coil Lift : Old Man Emu Nitrocharger Shocks : 33x12.5R15 Goodyear DuraTracs : 15x8 Black Rock 909s : Other Stuff . . .
MTH is offline   Quote Quick Reply
Old 04-13-2012, 08:38 PM   #11
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,199
NOTE:
If you are going to be driving faster than 40 mph
(64 km/h) with the Sunrider
 feature open, it is recommended

that you remove the rear window of the vehicle.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 04-13-2012, 09:01 PM   #12
Jeeper
 
zak18's Avatar
 
Join Date: Jul 2011
Location: Durham, NC
Posts: 116
Mythbusters needs to tackle this. I see other jkus and the windows are actually being sucked in with the air pressure rather than bulging out. Someone needs to do a wind tunnel test to put this to bed. I drive in sunrider regularly with no problem at highway speeds.

zak18 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
4x4s on the beach in Brigantine May 19th Mudboy New Jersey Jeep Forum 48 05-25-2012 08:33 AM
If you use a soft top in the winter ... biscot General Jeep Discussion 11 03-18-2012 12:50 PM
Soft top question DKirk TJ General Discussion Forum 8 03-17-2012 10:56 PM
Soft top storage Sherifftruman JK General Discussion Forum 3 03-13-2012 03:33 PM
Pics of Duratracs on stock wheels KicknJip JK General Discussion Forum 15 03-13-2012 02:42 PM



» Featured Product

All times are GMT -5. The time now is 01:08 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC