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Old 01-05-2016, 06:18 PM
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What mods are needed to make a smooth as possible on highway ride?

Hi all, so nice to be here. I am 69 years old and I have always wanted a jeep wrangler and now I am going to buy one. I think it will be a 4 door sport with a hard top. I want to lift it and put larger tires on it. both height and width wise. They look so great that way. I will NOT be going off road just highway driving and expressways. What should I put on the wrangler as far as suspension components and wheels and tires to make it smooth as I can. I am not trying to make a Cadillac out of it but I know nothing about this and I need direction as to how to make it ride as smooth as possible considering it IS a jeep. I have not lost sight of that. so how about a little help please. specifics would be a help.

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Old 01-05-2016, 07:39 PM   #2
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If you do a coil spring lift, definitely go with geometry brackets to reposition the front control arms. That will give you the best ride compared to fixing the caster with just longer front lower control arms...

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Old 01-05-2016, 07:43 PM   #3
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I would choose a lift with a linear rate spring like Teraflex and use Rancho RS9000XL shocks and definitely use geometry brackets for caster correction...

In fact, just read this: https://www.wranglerforum.com/f202/mo...f-1136938.html

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Old 01-06-2016, 11:15 AM   #4
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Quote:
Originally Posted by mowmanchu View Post
Hi all, so nice to be here. I am 69 years old and I have always wanted a jeep wrangler and now I am going to buy one. I think it will be a 4 door sport with a hard top. I want to lift it and put larger tires on it. both height and width wise. They look so great that way. I will NOT be going off road just highway driving and expressways. What should I put on the wrangler as far as suspension components and wheels and tires to make it smooth as I can. I am not trying to make a Cadillac out of it but I know nothing about this and I need direction as to how to make it ride as smooth as possible considering it IS a jeep. I have not lost sight of that. so how about a little help please. specifics would be a help.
For a smooth ride make sure you match your spring with a good dampener. Caster correction for return to center and improved tracking. What we always try to tell people is pick the lowest lift height needed to clear the tires you desire. This will keep your center of gravity low which will benefit stability and control on and off road. Your only sacrifice doing this is belly clearance off road.

We would disagree with Pressurized on coil selection. A multi rate coil and progressive rate coils in our experience outperforms a linear rate coil. You'll have a softer rate for daily driving, small bumps, and then it transitions to stiffer rates for stability (noticeable when turning, braking, and accelerating). Those same rates will prevent bottoming out in g-outs.

However, "Pressurized" has a good point with his name. Messing around with your tire pressure helps a ton on cracks, bridge gaps, and train tracks.

Good luck with your purchase.
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Old 01-06-2016, 11:21 AM   #5
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Originally Posted by Rock Krawler Sus. View Post
For a smooth ride make sure you match your spring with a good dampener. Caster correction for return to center and improved tracking. What we always try to tell people is pick the lowest lift height needed to clear the tires you desire. This will keep your center of gravity low which will benefit stability and control on and off road. Your only sacrifice doing this is belly clearance off road.

We would disagree with Pressurized on coil selection. A multi rate coil and progressive rate coils in our experience outperforms a linear rate coil. You'll have a softer rate for daily driving, small bumps, and then it transitions to stiffer rates for stability (noticeable when turning, braking, and accelerating). Those same rates will prevent bottoming out in g-outs.

However, "Pressurized" has a good point with his name. Messing around with your tire pressure helps a ton on cracks, bridge gaps, and train tracks.

Good luck with your purchase.


Multi rate and progressive spring suggestions please?
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Old 01-06-2016, 11:41 AM   #7
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Tire selection makes a big difference too. Go with a D load rated, AT type tire (BFG KO2 or Duratrac are popular). E-rated tires with more aggressive tread are good for offroad, but you sacrifice some on road comfort.

I have a 2.5" RockKrawler lift with Rancho shocks and Rancho geometry correction brackets on my JKU. The correction brackets made a HUGE difference in on road manners.
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Old 01-06-2016, 12:16 PM   #8
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Originally Posted by deepbluerubi View Post
Multi rate and progressive spring suggestions please?
I agree in principle with quite a bit of RK's post, but it ignores actual spring rates. If the TF linear rate is lower than the softer rate on RK's triple rate, the TF will be more plush...

I am a fan of and run the RK's myself and they are great springs. But ride is subjective and i think the RK's are built to carry more weight.

So ask yourself, how loaded up will your Jeep be? Heavy steel bumpers, etc...
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bumper - Yukon Gears - G2 Diff Covers - Pro Comp 8186 - Milestar Patagonia 35's - Teraflex BRK
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Old 01-07-2016, 03:03 PM   #9
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Personally, I've run a few lifts, 1 Rough Country 4", and Rock Krawler 5.5" in both mid and long arm. Not to mention we've built about 7 rigs now for friends. I found the RC Coils to be stiff, but survivable (but I'm an off road addict) I was willing to live with. When I jumped up to the 5.5" RKs it was like driving on pillows, I could literally feel my suspension articulate. The mid-arm 5.5" has since been discontinued, probably due to some binding. Once I upgraded to the Long Arm I'm in heaven on or off the road. RK has the best suspension products out there IMHO, but if you'll be staying on the pavement it may be overkill on a long arm, but their coils are outstanding!
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Old 01-08-2016, 12:58 PM   #10
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Old Man Emu has a pretty sweet 2.5 lift kit that rides very smooth. My buddy had it on his and it was pretty plush for a Jeep. Also I agree to stick with C or D rated all terrain tires. No E mud's. Tire pressure should be no more than 30 psi. When you decide on lifts and tires then do the chalk test on your tires. Basically you rub some chalk on the tread and drive it a few turns. Read and adjust the pressure to get full contact on the tire face. That ought to give you good wear and a nice ride.
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Old 01-08-2016, 02:37 PM   #11
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wouldnt a BB be the best way to go for the softest street ride? BB and new shocks and soft duratracs that still look aggressive
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Old 01-08-2016, 08:23 PM   #12
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Originally Posted by Pressurized View Post
I agree in principle with quite a bit of RK's post, but it ignores actual spring rates. If the TF linear rate is lower than the softer rate on RK's triple rate, the TF will be more plush...

I am a fan of and run the RK's myself and they are great springs. But ride is subjective and i think the RK's are built to carry more weight.

So ask yourself, how loaded up will your Jeep be? Heavy steel bumpers, etc...
I have to agree 100%. I am so tired of all of the fancy dual rate ,progressive rate Advertisements for springs and no listing ever as to what the actual rates are. Take the subjective BS out of the equation. I would much rather know a linear rate spring with the unloaded spring length and the actual rate published than buy springs that someone who has never met me guess I want . Some manufacturers have two sets of springs one for 2dr and one for 4dr . Well a light 2dr and a heavily built 2dr are also many pounds apart??? Never had this issue setting up a TJ suspension . Give us real numbers to work with, it has worked fine for years with the TJ's we always knew what we were getting before we installed.
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Old 01-08-2016, 11:19 PM   #13
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I have to agree 100%. I am so tired of all of the fancy dual rate ,progressive rate Advertisements for springs and no listing ever as to what the actual rates are. Take the subjective BS out of the equation. I would much rather know a linear rate spring with the unloaded spring length and the actual rate published than buy springs that someone who has never met me guess I want . Some manufacturers have two sets of springs one for 2dr and one for 4dr . Well a light 2dr and a heavily built 2dr are also many pounds apart??? Never had this issue setting up a TJ suspension . Give us real numbers to work with, it has worked fine for years with the TJ's we always knew what we were getting before we installed.
RK is one that will actually tell you what their rates are. Ive yet to know what the EVO coils run at. MC as well but never tried to find out.
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Old 01-09-2016, 01:09 AM   #14
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Originally Posted by mowmanchu View Post
Hi all, so nice to be here. I am 69 years old and I have always wanted a jeep wrangler and now I am going to buy one. I think it will be a 4 door sport with a hard top. I want to lift it and put larger tires on it. both height and width wise. They look so great that way. I will NOT be going off road just highway driving and expressways. What should I put on the wrangler as far as suspension components and wheels and tires to make it smooth as I can. I am not trying to make a Cadillac out of it but I know nothing about this and I need direction as to how to make it ride as smooth as possible considering it IS a jeep. I have not lost sight of that. so how about a little help please. specifics would be a help.

I have just gone with the TeraFlex/RS9000xl/AEV correction/TF exhause spacer/synergy wheel spacers setup.

Here is my main thread https://www.wranglerforum.com/f27/pro...l#post23406321

I have the Willys Wheeler edition (JK) with aftermarket bumper, hoop and winch. There was a 3/4 to 1" droop from the weight with the "soft" Mopar 14 springs.

The first thing I did was replace the BFG M/Ts with 285/70 GoodYear Duratracs. This was a good start, the tread difference made a good difference. Esp coming to a stop at the red lights. No more minor scrub board feeling. With the 1" higher and 1" wider, I had slight rubs front & rear.
So step 2: Add Synergy 1.5" wheel spacers. Before the spacers, the tire would fit in the wheel well when flexing, but with the wheels pushed out, the tires would hit the lip of the stock flares.
So now Step 3: Lift. I looked at the RK system real hard, but decided on TeraFlex. Cost was the main reason. Both initially and to upgrade (new CAs and other parts) Plus there was a special going on with NorthRidge that had the TF with Rancho 9-way adjustable shocks. I had read and everywhere it was stated that geometry correction brackets were highly recommended. I went with AEV because they have 2-5" lift adjustability. With the shocks extending to past the 24.5" length that TF notes, I got the TF exhaust spacers. (still have to put on). As things affect the bounce, I prefer the thought that I like consistency. So I went with linear.

Now for the meat, the highway ride is damn nice, pretty much like my wife's 4-door (JKU). I expected the extra 4" track width (1.5" spacer + the .5" extra from the 1" wider tires then X2) to have me swaying in the ruts on the highway. It is not bad at all, pretty much the same as a full size pickup, def no where as bad as the military Hummer that I used to drive haha. I forgot to see what setting the shocks are on. The Ranchos have 9 settings, (1=off-road to 9=highway) I will be looking to put them in the 3 or 4 settings.

So long story short, get a starter kit (coil lift, geometry bracket, wheel & exhaust spacers-adj shocks for best flexability), you can always add things like adjustable control arms (CAs), quick disconnect swap bar links (discos) if you decide to get more off-roadish. With the starter kit you can do 33 & 35s with stock fenders or 37 with flat fenders. Now if you go with new rims, -4.5" backspace and you can forget the wheel spacers ( I like my Willys rims). Also as the tire size increases, so does the weight and overall effect gearing. These will affect your fuel efficeincy and power in varying levels. My cost for my setup (33s with stock rims) run just under $3,000.
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Old 01-31-2016, 04:28 PM   #15
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I have a 2005 X with 40,000 miles. It has always wanted to make quick "swaying jerks" on the highway when traveling along (hitting little flaws in road, going down a steep highway mountain grade); very unsettling feeling so I tend to drive no faster than 55, which just pisses everyone off. I see other Wrangles just swoop right by me. Suggestions on how to fix this? I have had this since new and it has always done this.
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Old 02-01-2016, 01:56 AM   #16
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Quote:
Originally Posted by mowmanchu View Post
Hi all, so nice to be here. I am 69 years old and I have always wanted a jeep wrangler and now I am going to buy one. I think it will be a 4 door sport with a hard top. I want to lift it and put larger tires on it. both height and width wise. They look so great that way. I will NOT be going off road just highway driving and expressways. What should I put on the wrangler as far as suspension components and wheels and tires to make it smooth as I can. I am not trying to make a Cadillac out of it but I know nothing about this and I need direction as to how to make it ride as smooth as possible considering it IS a jeep. I have not lost sight of that. so how about a little help please. specifics would be a help.
If you are adding bigger tires, get 3.73 gears when you buy the Jeep.
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Old 02-01-2016, 01:57 AM   #17
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Originally Posted by jwr View Post
I have a 2005 X with 40,000 miles. It has always wanted to make quick "swaying jerks" on the highway when traveling along (hitting little flaws in road, going down a steep highway mountain grade); very unsettling feeling so I tend to drive no faster than 55, which just pisses everyone off. I see other Wrangles just swoop right by me. Suggestions on how to fix this? I have had this since new and it has always done this.
Is it stock it or lifted?
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Old 02-06-2016, 11:23 AM   #18
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it is stock
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Old 02-06-2016, 11:28 AM   #19
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3.73 gears I second that
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Old 02-06-2016, 05:44 PM   #20
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Griffin Jeep JK Wrangler Steering Attenuator - really helped on the highway as well.
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Old 02-06-2016, 06:24 PM   #21
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You could just consider buying a Sahara Edition. Rides a bit better, sits a bit higher, comes with a few more creature comforts. Just an idea, but you can always do more with mods especially if you're looking to really get into it.
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Old 02-07-2016, 01:17 AM   #22
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Check out my build thread if you like. Search "Dhory" on the forum. My JKU is my DD, and I do put several highway miles on it. I actually go against the general attitude here, and I'm glad I went with the General Grabber AT2sthat are E rated. I found that with the Rancho shocks I was able to play with tire pressure AND shock setting to find the best balance of comfort and fuel economy. I'm running my summer pressures at 44psi....EEK!! But it's still smoother than stock and it is a Sahara. Best of luck, OP.

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Old 02-08-2016, 10:24 AM   #23
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Check out the speedo, I am not encouraging anything, but I went on a trip to Poconos on I-80 for around 100 miles, my average speed for the trip was around 80 mph, and some downgrade sections seeing over 90 mph. While the Jeep was not exactly like a sedan when It came to stability at those speeds, I felt in control even with heavy crosswinds at times.

If you do the right lift kit that was designed as dual purpose (onroad/offroad) and correct all necessary geometry and fix caster to proper specs. It should ride very nice and stable even at high speeds. After taking that trip, I am glad to have made the choice in the kit I installed.

*Disclaimer: Pic taken by wifey, hence the angled pic.
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Old 02-08-2016, 09:08 PM   #24
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Oscar Mike AEV

Just st my .2c But my AEV 2.5 lift with Bilstein shocks/Geometry correction brackets/ has given me over 40K of great driving to include driving the Blue Ridge Parkway two years in a row!!
Love the ride and handling and it still has fun off road as well! Good luck

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