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  #49  
Old 11-17-2013, 07:38 AM
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Re: Off Road 18"s

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Originally Posted by DS84 View Post
Finally got around to getting our 18's (Mopar 82212377) and D697's on the GC today. Very happy with the result. Tyres are standard 18" size 265/60/18. The ride is a little firmer than stock 20's and there is an ever so slight hum that you can only hear with radio muted and if you listen for it.
What rims are they?
I looked at the 697 but they had softer rubber than the coopers so i plan to replace mine with coopers.
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  #50  
Old 11-17-2013, 03:40 PM
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Originally Posted by shellhall5183 View Post
What rims are they? I looked at the 697 but they had softer rubber than the coopers so i plan to replace mine with coopers.
They're genuine Jeep/Mopar rims PN: 82212377.

I looked at the Coopers as well but pretty sure the only standard size is in the AT3 and it's only passenger construction and not light truck. In regards to the compound, there's a few reviews on the web of people getting a reasonable amount of kms out of the D697's. I'm happy if the D697's are a little softer as it's my wife's daily driver and think that they'll perform better on wet bitumen than the Coopers, although it hasn't rained yet so I might eat my words!
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  #51  
Old 11-17-2013, 06:45 PM
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Re: Off Road 18"s

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Originally Posted by DS84 View Post
Finally got around to getting our 18's (Mopar 82212377) and D697's on the GC today. Very happy with the result. Tyres are standard 18" size 265/60/18. The ride is a little firmer than stock 20's and there is an ever so slight hum that you can only hear with radio muted and if you listen for it.
Those are the rims I've been looking at, but none of the dealers I've spoken to seem to think they can get them. Can you tell us where you got them?
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  #52  
Old 11-17-2013, 07:56 PM
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Re: Off Road 18"s

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Originally Posted by ClarkeyWKCRD View Post
Hey adamt.

The Hercules Terra Tracs look great. I was just wondering which tyre dealer you got them from?

Cheers,
Clarkey.

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Performance tyre centre in Lilydale Vic. I would think any of the independents should be able to get them.

So far they have been great, We are doing a trip at the end of the month to the Victorian high country and Blue rag track so I will give a report when we return.

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  #53  
Old 11-17-2013, 08:42 PM
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Re: Off Road 18"s

Just dredged up some info on the Terra Trac. OEM size in 18" is a Passenger construction carcass by the look of it, but the regular upsize is available in LT construction. Not that the number of physical ply are mentioned. Check out via the link below... AT, then Sizes and Specifications

SUV/Light Truck Tire Gallery | Hercules Tires

It seemed too good to be true

Cheers,
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  #54  
Old 11-17-2013, 09:46 PM
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Quote:
Originally Posted by Benn0 View Post
Those are the rims I've been looking at, but none of the dealers I've spoken to seem to think they can get them. Can you tell us where you got them?
I got mine from my dealer who ordered them in. Surely if my dealer can get them yours can... They are listed in the accessories brochure that you can download from the Jeep Au website so might be worth showing them that maybe?
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Old 11-17-2013, 11:19 PM
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Re: Off Road 18"s

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Originally Posted by DS84 View Post
I got mine from my dealer who ordered them in. Surely if my dealer can get them yours can... They are listed in the accessories brochure that you can download from the Jeep Au website so might be worth showing them that maybe?
Yep, they handed me an accessories brochure and they are on the front page, I pointed at them and said I want those, and they said not all accessories in the brochure are available. But I haven't sat down to do the deal yet, and I'll be trying a few others.

It's good to know they are available, thinking of going a Red Limited with those rims and maybe some coopers....
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  #56  
Old 11-18-2013, 01:40 AM
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Re: Off Road 18"s

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Originally Posted by shellhall5183 View Post
What rims are they?
I looked at the 697 but they had softer rubber than the coopers so i plan to replace mine with coopers.
Which pattern and size cooper are you thinking of?
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  #57  
Old 11-18-2013, 02:16 AM
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Re: Off Road 18"s

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Originally Posted by DS84 View Post
We didn't really discuss pressures as they were quite busy when I picked them up. They were inflated to 38 PSI and is where I usually run my AT tyres. I have read that these tyres need to be inflated to 38-40 PSI to keep them nice and quiet. What has your experience been with them Bob?
At the moment I'm using 37psi. My only logic for 37psi is that it the placard pressure plus 4psi for high speed but I'm still researching the subject. Neither Bridgestone nor Jeep are any help at all. The Bridgestone guy who sold me the tyres suggested pressures from 38-50psi because that's what he uses on his ute. I contacted Bridgestone officially. They were non-committal and wouldn't be swayed from anything other than the placard pressure, probably for legal reasons. Their literature continually talks of using the “correct” pressure but they won’t tell you what that is. The only bit of sense I got was out of Allan Whiting who advertises Bridgestones in the mags. He emailed, "Your new D697s will work well at the Jeep recommended pressure of 33psi, while you’re running around town lightly laden. For higher speeds I’d up the pressures slightly to around 35psi. if you’re fully loaded the dealer’s suggestion around 38spi is what I’d be using. Don’t forget to rotate the tyres every time the Jeep is being serviced, to maximise your tyre life."

Yokohama recommends using 5-15psi more in LT tyres than in the equivalent passenger tyre but then that’s for their tyres. Opinions vary widely and it is frustrating that those who should know don't or are unwilling to comment. I've written more on this here Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

Whith the camper trailer in tow, I intend to use 29psi in the front and 45psi in the back and see how it goes. I worked this out by putting the car and trailer over a weighbridge, applying using load/inflation tables then adding some.
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  #58  
Old 01-29-2014, 10:06 AM
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Re: Off Road 18"s

Just closing the loop on my solution.

Bought:
- 18" Laredo wheels off Claremont Wheel Power in NSW and had them freighted.
- TPMS sensors off a US seller on eBay
- General Grabber AT2s in 275/65R18 from Claremont Tyre Power in WA

This is the result in pictures:













Yep, of course they are noisier. It's all low frequency sound similar to the background in a large aircraft... or wind roar. There's no high pitched element.

Speed is about 3 to 4% shy now.

TPMS just picked up without an issue.

Even with rough treatment off road there's been no contact, except for one area at the leading edge of the rear wheels. I recommend trying to hold back the guard liner here either by shaping with a heat gun or pinning back with some Sikaflex. The guard liner doesn't have to hit... and only one side wore through.

Tracking is a bit worse. That's a square shoulder issue... the benefit is solid gravel road cornering. I drove some loose roads like a demon and the grip was fantastic through corners... more than I dared find the limit of. Lowering the pressure improves bitumen tracking but adds a little bit to the fuel consumption.

Fuel consumption up to around 10 l/100 unless pumped up real hard.

Requires low pressure to deform. I ran 12psi in some really powdery wind swept sand, and could have gone lower to get the flotation I wanted. Oh for 16"s again...

At around two grand all done, I have the best of both worlds with both on-road and off-road boots for my Jeep. I'll probably chase up a slightly narrower tyre for the spare unless I do a bit of rear storage work. Currently I just have the standard spare and the threat of a very slow trip out!

Ciao,
Steve
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  #59  
Old 01-29-2014, 04:26 PM
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Re: Off Road 18"s

Thanks Steve,

I have bought my 6th spare of Claremont Wheels as well and got freighted to Alice Springs, I have got the dealer to order the TPMS for that wheel as I was informed that you had to have it matched to the existing vehicle monitoring system.
As for the tyres, man that's hard, I have been doing so much research on what to get to fit it out to work and look good.as well as great reviews but getting whopping prices from $450-$550 a tyre alone and needing 5, gets very expensive. and they will not give me anything for the current Michellens that will be coming on the vehicle either so that makes it costly.

Cheers
Brenden
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  #60  
Old 01-29-2014, 04:43 PM
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Re: Off Road 18"s

Morning all.

Any one tried out the Achilles Desert Hawk X-MT tyre, which is a mud tyre in 265/60 x18 ? Have load rating of 114 but only a speed rating of Q. I have seen them advertised at $295 each.
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