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Unread 11-10-2012, 10:24 AM   #1
crush127
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2012 JK Wrangler 
 
Join Date: Apr 2012
Location: Orange, NJ
Posts: 60
Gear ratio for 35 inch tires?

What is the correct gear ration to run 35 on tires on a jeep wrangler sport?

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Unread 11-10-2012, 06:11 PM   #2
leftlanetruckin
XJ on 37's
 
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1998 XJ Cherokee 
 
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ASSuming you have a new JK, with the new motor in it, and not the lethargic minivan motor?
If so, then either 4.56's or 4.88's.
Tranny will also play a part in it too though.
I run 35's and 37's in my 4.0/auto XJ and it handles it good enough. Althoiugh 4.56's would be nice.

Martin
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1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/f12/swap-offically-underway-324622/

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Unread 11-11-2012, 07:39 AM   #3
crush127
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2012 JK Wrangler 
 
Join Date: Apr 2012
Location: Orange, NJ
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Quote:
Originally Posted by leftlanetruckin
ASSuming you have a new JK, with the new motor in it, and not the lethargic minivan motor?
If so, then either 4.56's or 4.88's.
Tranny will also play a part in it too though.
I run 35's and 37's in my 4.0/auto XJ and it handles it good enough. Althoiugh 4.56's would be nice.

Martin
Thank you. I figured out the mathematical equation. Haaaa!
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Unread 02-03-2013, 07:47 PM   #4
hitechredneck66
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2006 KJ Liberty 
 
Join Date: Dec 2012
Location: Saratoga Springs, UT
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I am going to be ordering a 2013 10th anniversary Rubicon with the auto trans and 4.10 gears. Any thoughts on if it will handle 37s? I live in Utah and will have it in the mountains a lot.
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Unread 02-03-2013, 07:52 PM   #5
leftlanetruckin
XJ on 37's
 
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1998 XJ Cherokee 
 
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Location: missouri via blackpool,lancs.
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I am running 4.10'a in my JK Rubicon axles that are on the XJ.
With the 37" SSR's and steel wheels, they will put a strain on the 4.0/AW4. I run 35" A/T's for DD duties, on light aluminum wheels, and it is fine. Not sure on the new JK engine, never driven one. On the old one, we test drive a brand new JK Rubi and it was a total turd with stock tires! The XJ's 4.0 on 37's would have beat the snot out of it, then gone for a beer afterwards....

Martin
__________________
1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/showthread.php?t=324622

Years to gain the hands on experience, and offer it freely.
Minutes to gain the knowledge from the internet, and quote it just as freely.
Choose wisely!
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