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Old 03-15-2016, 04:16 PM
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2014 Unlimited Rubicon Rough Ride

I just bought a 2014 JKUR with 25K miles on it. Totally clean and bone stock from what I can tell. Which I like so I know any mods are done right.

I didn't notice at the dealership when I test drove but after driving it a bit it seems to ride VERY rough at low speeds. It does not seem at all like suspension or brakes but more like really rough or uneven tires. Visually the tires look okay but it's hard to tell with how agressive the treads are. It has BFJ MudTerrains on it of stock size so at 25K I'm assuming they are original.

It's hard to describe but it's almost like a much less severe version of when you have a flat tire.

I know Jeeps ride rougher but for example this is more extreme than my 1997 TJ was. Pulling up to a red light or stop sign it almost feels like the engine died in how it rumbles and then is totally silent. The first time that happened that's what I thought it was.

The other thing I notice is that there seems to be some unusual resistance when slowing down. Like on a downhill in a parking lot for example when you let off the gas it immediately slows down enough to notice.

Anyway this Jeep is new to me and this may be normal or just tires but I wanted to get some input.

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Old 03-15-2016, 04:19 PM   #2
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Check the tire pressure.. The dealer probably had it over 40PSI .. 28-30PSI is probably ideal..

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Old 03-15-2016, 04:58 PM   #3
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I've a 2014 JKUR also, the ride on mine isn't rough. I second NotARubicon! check the tire pressure.
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Old 03-15-2016, 05:05 PM   #4
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You ever have MT tires before?

How long was it on the lot?

How much have you driven it since pickup at higher speeds?

What is the tire pressure?
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Old 03-15-2016, 05:45 PM   #5
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Originally Posted by NotARubicon! View Post
Check the tire pressure.. The dealer probably had it over 40PSI .. 28-30PSI is probably ideal..
^^^ If it's has the OEM mud BFG's, they can feel a bit like riding a dirt bike with full knobbies on the road if the tire pressures are set at the recommended psi of 37.....especially at slow speeds. My rubicon did it with 5 miles on the odo......the first thing I did when I came home from the dealer was drop tire pressure to 32 and it helped quite a bit.
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Old 03-15-2016, 06:09 PM
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^^^ If it's has the OEM mud BFG's, they can feel a bit like riding a dirt bike with full knobbies on the road if the tire pressures are set at the recommended psi of 37.....especially at slow speeds. My rubicon did it with 5 miles on the odo......the first thing I did when I came home from the dealer was drop tire pressure to 32 and it helped quite a bit.
That is actually a really good description. Dirtbike with knobbies.

I just drop the PSI down to 28 and took it around the block and it does seem a little better. I'll take a longer ride later today.

In answer to the other questions, no I have not had MTs before. And it's been a little over year since I had my TJ and I've been driving my F350 or a sedan since then so it may be normal and I'm just not used to it.

I don't know how long it sat at the dealership.

I plan on a lift and bigger tires soon anyway so I'm not overly concerned if it is tires.
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Old 03-15-2016, 06:14 PM
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BTW, is there a way to keep the TPMS from bitching at you if it's that low?
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Old 03-15-2016, 06:29 PM   #8
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BTW, is there a way to keep the TPMS from bitching at you if it's that low?
I know with my programmer I can turn off the TPMS.
When I swapped the OEM BFG's for 35" Goodyear MTR/k's.... They were much smoother at all speeds.....so it may just be the nature of that tire and mine only had 7,000 miles on them when I took them off ....it kinda has a tractor tire like pattern.
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Old 03-15-2016, 06:53 PM   #9
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AEV Procal will let you lower the TPMS bitchpoint or disable it altogether.. also will let you reprogram your tire size when you go bigger and several other things.
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Old 03-15-2016, 07:30 PM
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AEV Procal will let you lower the TPMS bitchpoint or disable it altogether.. also will let you reprogram your tire size when you go bigger and several other things.
Good to know. I have lots to learn in this world. I have a heavily modded 7.3 PowerStroke that I rebuilt from basically the junk heap. So I know my diesels. But this stuff is different LOL.
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Old 03-15-2016, 09:25 PM   #11
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28 is a good start. Also take some time to get used to it and drive it more at speed. Radial tires aren't really supposed to flat spot but they still do in my experience if sitting long enough. It will be different (worse) than you are used to with the MT's too. There is a trade off there. Better off road just about always equals worse on road. For the most part you'll get used to it once the pressure is sorted out.

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