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  #1609  
Old 03-26-2016, 09:35 AM
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Re: 2016 Grand Cherokee - Features & Changes

Damping.

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  #1610  
Old 03-26-2016, 10:07 AM
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Re: 2016 Grand Cherokee - Features & Changes

I've never noticed any bouncing in my Summit. I think it rides great.
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Old 03-26-2016, 10:34 AM
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Re: 2016 Grand Cherokee - Features & Changes

Is the Summit's suspension setup exactly the same as the Overland? Just wondering, think it is..
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  #1612  
Old 03-26-2016, 10:48 AM
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Re: 2016 Grand Cherokee - Features & Changes

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Originally Posted by overlanding View Post
Is the Summit's suspension setup exactly the same as the Overland? Just wondering, think it is..
Yes its the same exact suspension and drive system as the regular overland with ELSD. But the HA has a more sport tune to its suspension with no ELSD available. the early on handling issues I noticed with summit were more tire related in my opinion, they fixed that in 2016+. Decent tires on it and I think it handles well for what it is a heavy suv.
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Old 03-26-2016, 04:30 PM
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Re: 2016 Grand Cherokee - Features & Changes

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Originally Posted by silvermax04 View Post
Yes its the same exact suspension and drive system as the regular overland with ELSD. But the HA has a more sport tune to its suspension with no ELSD available. the early on handling issues I noticed with summit were more tire related in my opinion, they fixed that in 2016+. Decent tires on it and I think it handles well for what it is a heavy suv.

Well...everyone keeps SAYING the HA has a sport tuned suspension. However, at least from everything I've been able to determine, the 4x4 HA suspension is identical to the Summit and Overland...down to the part numbers.
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Old 03-26-2016, 04:45 PM
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Re: 2016 Grand Cherokee - Features & Changes

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Originally Posted by Peter_K View Post
Well...everyone keeps SAYING the HA has a sport tuned suspension. However, at least from everything I've been able to determine, the 4x4 HA suspension is identical to the Summit and Overland...down to the part numbers.

Interesting. I've asked before a few times and was never able to get a clear answer. On the Jeep website when building the GC HA it says that it has performance oriented shocks (or something like that). But that's about the only thing I've found to be proof that it could possibly be different.
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Old 03-26-2016, 05:49 PM
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Quote:
Originally Posted by Peter_K View Post

Well...everyone keeps SAYING the HA has a sport tuned suspension. However, at least from everything I've been able to determine, the 4x4 HA suspension is identical to the Summit and Overland...down to the part numbers.
Really lol, so the part numbers on HA and Summit suspension are same thing? So its all marketing? The only other thing i can think of is i wonder if they could just preasurize the system a little more stiffen it up and call it sport tuned, not sure if that would do it or not, just a guess.
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Old 03-26-2016, 06:53 PM
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Re: 2016 Grand Cherokee - Features & Changes

I've read that the suspension is a little different on the HA. Not sure if it is or isn't. I do know that the ride quality feels a little different from my Overland... it feels a little tighter and transmits a little more road feel. Not sure how much of that may be due to the change from Forteras to Ecopias.

I also feel a very faint vibration between 70-75mph. I'm not sure if it's a wheel balance issue or again, a different brand of tire.
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  #1617  
Old 03-26-2016, 08:16 PM
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So Summit gets the Pirelli standard and overland/limited gets the Ecopia standard with option to get Pirelli for a charge, is that how it's working?
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Old 03-26-2016, 08:20 PM
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Re: 2016 Grand Cherokee - Features & Changes

Quote:
Originally Posted by silvermax04 View Post
Really lol, so the part numbers on HA and Summit suspension are same thing? So its all marketing? The only other thing i can think of is i wonder if they could just preasurize the system a little more stiffen it up and call it sport tuned, not sure if that would do it or not, just a guess.

When I pull up the part numbers by VIN for both a 4x4 HA and 4x4 Overland or Summit, I get the exact same part numbers for the front air suspension spring/shock assembly and the rear air bags and shocks.

Generally, ANY difference will be regarded as a different part number (otherwise you wouldn't know what to put in the vehicle and parts tracking would be useless).

Adding more pressure to the air springs would just make it ride higher. It COULD be possible they have changed the height settings so it rides slightly LOWER.

But...as far as I can tell by part numbers they aren't using any different shock tuning. Which is strange because the parts catalog has listed sport (SDE) coded air suspension parts as being available for years. But I can't find a model that had them installed from the factory.
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Old 03-26-2016, 08:38 PM
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Quote:
Originally Posted by Peter_K View Post

When I pull up the part numbers by VIN for both a 4x4 HA and 4x4 Overland or Summit, I get the exact same part numbers for the front air suspension spring/shock assembly and the rear air bags and shocks.

Generally, ANY difference will be regarded as a different part number (otherwise you wouldn't know what to put in the vehicle and parts tracking would be useless).

Adding more pressure to the air springs would just make it ride higher. It COULD be possible they have changed the height settings so it rides slightly LOWER.

But...as far as I can tell by part numbers they aren't using any different shock tuning. Which is strange because the parts catalog has listed sport (SDE) coded air suspension parts as being available for years. But I can't find a model that had them installed from the factory.
That is strange, maybe Milous can comment on what is going on with this.
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Old 03-26-2016, 10:46 PM
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Re: 2016 Grand Cherokee - Features & Changes

No, the Summit and HA definitely have different air suspension parts. Not only do I know they ride completely different from owning both of them, but I actually compared part numbers on the actual vehicles and all the air suspension part numbers are different.
Do not base things off of what part numbers are currently listed on those sites as they don't seem to be accurate for fairly new vehicles. I have also looked on those sites which are not up to date.
Atleast between my 2014 summit and 2015 HA the part numbers on the air suspension components were different. I mean I suppose since one was a 2014 and a V8 and another is a 2015 and a V6 could be a reason why they are different, but that still wouldn't explain why they ride very differently.
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