|11-18-2011 07:53 AM|
|11-17-2011 10:17 PM|
I have run into the same question. I am looking at a 2dr, auto with hard top for a daily driver and commutes every other weekend (about 400km round trip highway driving). I was thinking if I am driving this thing at 120km/h (thats like 70m/hr right?) for 2 hour trips .
Does anyone have any ideas what the difference between the 'normal' duty suspension, and the 'performance' suspension offered on the Sport S packages mean?
Or even the differences between the gas shocks and Sport S shocks? (do they offer the same stiffness?)
|10-14-2011 02:47 PM|
|10-10-2011 03:36 PM|
My personal thoughts are that 18" AT, lower profile tires (so the 255/70 ?) with stiffer suspension, at road speeds, should provide the best onroad handling. (BTW - yes I know it's not a sports car, that doesn't mean I can't aim for the best cornering I can get out of it. Right now I use a VW Eurovan camper for a lot of the stuff the Wrangler would be replacing, and I feel like I should be able to at least get the Wrangler to match that. Also, the general handling is super important for me as I often tow up twisty mountain passes to get where I'm going.) But I'm trying to sort through your above questions to figure out exactly what the suspension differences mean on the up level trims
|10-10-2011 03:15 PM|
|off a cough||
|10-10-2011 02:51 PM|
|Vulkyn||So sahara and rubicon are less comfortable onroad and give a more comfortable offroad driving ?|
|10-10-2011 02:39 PM|
|daggo66||Softer would mean more body roll, so it's not better for cornering. Besides that Wranglers don't "corner" at all. What the adjustable valving means is that the harder a hit it takes, the stiffer or harder to push the shock in. It will be more forgiving on gentler terrain, but not as soft as the hydro shocks on the Sport. They feel "mushy" in comparison.|
|10-10-2011 02:38 PM|
It is difficult to compare handling because we are talking multiple set-ups.
Different wheels: 16", 17", or 18" depending on what model and package.
Different tires: 225/75/16AT, 255/75/17AT, 255/70/18AT, 255/75/17MT
Different shocks: Sahara and Rubi get high pressure gas shocks
Different coils: Tow package? Hard Top? Someone playing spin the bottle?
Not to mention Jeep making things even worse:
Sport and Sport S get the normal duty suspension
Sahara gets the Heavy Duty suspension
Rubicon gets the Performance suspension
What does that even mean?
|10-10-2011 02:25 PM|
First off, I'm only looking at Unlimited. (Have a pair of 3.5 year olds and this will become my daily driver)
The Max tow package I'm guessing might be the key then. I tested a Sport S with Max tow vs a Sahara without. (also 3.23) Overall, I thought the S was more fun to drive and handled better, and I'm guessing it was the max tow. So, I think I need to probably aim for a Sahara with Max tow, or look at just the Sport S and upgrade the suspension. Sounds like my original thoughts of the Rubi are correct, and that's not the way for me to go.
|10-10-2011 02:16 PM|
|off a cough||
Rule out the Rubi right away due to tires, which will be an issue.
The following will result in a stiffer ride:
Note also that a 4 door would in theory be a better ride because of the longer wheel base, but the Unlimiteds do also have stiffer springs than otherwise identical SWB JKs by default. I don't know if that is a wash or not, but I wouldn't choose between a 2 door or 4 door based on that alone, anyway.
FWIW, my Rubi with dual top and max tow has a 6k-7k GVWR per the VIN. That's pretty crazy, and you do feel it. My TJ with Old Man Emu springs rode a bit softer, although the longer control arms and longer wheel base of the JKU makes up for it well enough.
|10-10-2011 02:16 PM|
So just to be clear, the website says:
Tuneable Monotube Shock Absorbers have a proprietary Low Speed Tunable (LST) valve technology that is firm at low speed for improved feel on the rocks and a relaxed feel at higher speed for optimum highway driving.
That's for the Sahara. My concern is that the "relaxed feel" in highway driving may in fact be actually softer for higher speed cornering (than Sport S) My goal for this is getting the performance the best I can for the drive up to the mountain to the ski hill
Also, is there anything in the shock systems that I would need to upgrade in addition to the shocks themselves? (I'm planning on a second set of rims to set up for winter tires anyway so the wheels is a wash) I'm thinking that a sports with aftermarket recaros and uprated shocks might be the way to go, but I'm wondering if I will end up with better handling overall from a Sahara or Rubi.
Thanks again folks for the opinions. I know you get similar questions quite often.
|10-10-2011 01:03 PM|
Wrangler suspensions are made up of coil springs and shocks.
The coil springs come in a varity of "stiffness" ratings that vary from jeep to jeep. Stiffer coils are often--but not always--linked with options like the hard top, 4 doors, tow package, and the Rubicon trim level. They're pretty random though.
As to shocks, the Rubi and Sahara come with gas shocks. The Sport comes with hydraulic shocks. Gas shocks are "better" and will produce a stiffer ride.
All that is to say that the Sahara and the Rubi should have a "stiffer"--but better--ride than the Sport.
|10-10-2011 01:00 PM|
|daggo66||It's actually just the opposite. The Sahara and Rubicon have gas shocks which will give a stiffer, not softer ride.|
|10-10-2011 12:48 PM|
Suspension differences in 2012 JKU models
Ok, so from what I can see there are three different suspension setups on the Sport, Sahara, and Rubi
What I'm trying to figure out is which will give the best on road handling. All of the jeeps will be sufficient for my (moderate) off road needs (towing my dirt bike trailer in to trailheads, skiing etc)
I'm looking to get a six speed with a min. 3.73 final gear ratio. So far in my test driving, I've found that a sport s with 17s seemed to provide the best on road handling, but it wasn't back to back with a Sahara, and I haven't tried a rubi.
Originally, I was thinking that the rubi would be overkill and not needed for what I'm doing, and I know the tires won't be the best choice for me.
At any rate, reading the specs, the Sahara and the Rubi seem to be tuned to allow softer rates at higher speeds. While that might give you a more comfortable on road ride, it seems like that would actually give you poorer cornering on road.
Can anyone help me with clarifications on that?
BTW tested a 3.23 and a 3.73 six speed and the difference seemed to be quite noticeable in on road performance as far as get up and go.