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Old 11-12-2013, 05:42 AM   #1
Join Date: Apr 2013
Location: Oman - Middle East
Posts: 2
JK 2014 upgrade

Hello everybody

I just received my brand new JK 4 DR 2014. I am planning to go for TF 2.5" with 285/70-17.

I need the car to be my DD and often off-roading (sand dunes).

does the current ratio suit the intended upgrade?

your advise much appreciated.

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Old 11-12-2013, 07:04 AM   #2
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Location: NJ exile living in Baltimore
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You can easily fit that size tire without a lift. Stock tires are 32", that size comes out to 32.7".


"I've got two things in this world, my balls and my word and I don't break them for no one."
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Old 11-12-2013, 07:18 AM   #3

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You just killed a kitten. It os a Jeep, not a car. As far as the lift goes, TF is highly regarded here.
98 TJ 4i in currie with Currie bars front and rear
2014 JKUR AMP"D,Ace slider,BFG AT/KO's 33's
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Old 11-12-2013, 08:20 AM   #4
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Location: Near Houston Texas
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I have the fairly close to the same combo on my 14 JKUR.. the TF 2.5 gives you room to run up to 35's, I'm running BFG AT's, 315 70 17'.. I only have 4500 miles on it ,, but I have done some mountain 4x4 trails and mountain highway along with some DD routine ... no problems with any... I have the 373 not the 410... I get about 16 highway... I did calibrate my speedo... and confirmed mileage with manual calculations.... my rpm's are fine... plenty of climbing power in 4lo... some 18mpg (rarely) on flat freeways and some 14.9mpg in city...mileage nosedives above 70mph.. TF gives a pretty smooth ride.. good luck
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Old 11-13-2013, 05:25 AM   #5
Join Date: Apr 2013
Location: Oman - Middle East
Posts: 2
thanks guys for the feedback

I am not totally sure as I think the current ratio is 4.10

today fixing is done... however, I noticed that the car trend to go to lower speed whenever I take the highway (so if I drive around 120KM) the car keeps wanting to go to lower gear speed (4th or 3rd) and then higher rpm.

I am not sure if this is normal or has to be solved by tuning or ratio change?
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