"I don't know how to drive in snow/ice, so I blame my GC" Part Deux - Page 5 - Jeep Garage - Jeep Forum

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  #49  
Old 03-28-2015, 10:06 AM
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Re: "I don't know how to drive in snow/ice, so I blame my GC" Part Deux

Quote:
Originally Posted by Zhe Wiz View Post
He simply had summer tires on snow (ice by the time he got his camera out), all 4 of which were spinning.
Come on bro, summer tires? How did you reach that conclusion?

i think we need a video of the jeep on rollers to close this argument.

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  #50  
Old 03-28-2015, 10:52 AM
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Re: "I don't know how to drive in snow/ice, so I blame my GC" Part Deux

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Originally Posted by silvermax04;1164740 ...[B
What i dont get is if you order ORAII why dont they put a more off road suited tire than the latitude which is a highway tire. Nothing to radical but just one a little more capable.[/B]
That's pretty much my point. I agree with you guys about the gas mileage, weight, etc. concerns, but the OPs Jeep has the ORA option. Whether it's ORAI or ORAII shouldn't matter.

Your right the masses don't do any off-roading. Where I come from Off-road is when your on your driveway and one of your tires goes over the grass, but if your buying ORA it should have a true AT Tire. As I mentioned in the other thread the Cherokee's have a Firestone Destination Option.
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  #51  
Old 03-28-2015, 11:47 AM
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Re: "I don't know how to drive in snow/ice, so I blame my GC" Part Deux

Quote:
Originally Posted by f1anatic View Post
Come on bro, summer tires? How did you reach that conclusion?

i think we need a video of the jeep on rollers to close this argument.
IMHO if you're not using WINTER tires, you're using SUMMER tires, though that wasn't my point. Point is if all four tires were spinning, the AWD system wasn't the problem. If NO tire has traction (summer, winter, all weather, all terrain - doesn't matter) the AWD system will not help no matter how good it is.

But yes, where are the inclined rollers when you need them?? His situation was the same as if all 4 tires were on free spinning rollers. No AWD system will climb THAT hill. Stop the rollers under ONE tire (give it traction) and THEN let's see what happens. Then we'd have a meaningful test.
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  #52  
Old 03-28-2015, 11:49 AM
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Re: "I don't know how to drive in snow/ice, so I blame my GC" Part Deux

Greetings,

Quote:
Originally Posted by echo7tango View Post

Those of us who need the traction will either swap out the tires, or if you're frugal and can live well enough with them like me, you live with the stock tires until they wear out.

That is correct. For those of us fit that requirement needing more traction, we swap out the tires just like I did and have been doing for years.


Quote:
Originally Posted by David_Hart View Post
I'm willing to bet that the primary reason that Jeep choose the factory tires was for better gas mileage in an effort to meet US fleet fuel economy rules. The factory tires have a low rolling resistance rating.

Manufacturers are working hard to eek out as much fuel economy as possible. It's one of the reasons why the 8-speed transmission was used in the Jeep.
Without a doubt, Jeep concentrated on make sure they made the mark with EPA.


With packages geared to the off-roader for the JGC, I think worrying about the EPA should be exempt. If it is a requirement by the government, then Jeep should not have offered, for example the Michelin Latitudes as an on/off road all terrain tire starting back for the 2011 model year. The Wrangler, based upon the package you get the right tire. Same with the Cherokee. As everybody knows, options with packages will increase the purchase price of a vehicle in many situations.

At the same token regarding tires that have low rolling resistance, since 2012 there has been an increase in the market in the selection of AT tires. In addition, the regular highway tire has also seen an increase in these tires since 2011 as well. Plus the fact, they now have better traction. As I said in a previous post within this thread, Jeep should have different tire packages for the off-roaders and those you do not need an AT type tire, but need something better for their region.

When Jeep had the GC Trailhawk trim, they finally got around to offer the GY SilentAmor. From following the commentary of my fellow members, it seams that Jeep today only offers the LAT's still, unless you get a dealer swap. While other Jeep models get better tire packages, it seams the Grand Cherokee as the flagship model get left out again in the 2015 model year. With the 2016 just months away from hitting the pavement, what is going to happen again? Jeep is going to rest on their accomplishments or move with forward progress?

Best for now.
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  #53  
Old 03-28-2015, 11:52 AM
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Re: "I don't know how to drive in snow/ice, so I blame my GC" Part Deux

Sorry, but I agree with the people criticizing the GC's capabilities on snow. My RWD BMW did better than the GC. Now I realize it is not the GC, but the tires (my BMW had winter snow tires).

Honestly the stock tires on the GC are some of the worst all season tires I have ever had on a vehicle (including various rentals). The reviews of the tires on Tire Rack are spot on that these tires SUCK. If I was purchasing again, I would require they get swapped out as they are terrible in all conditions expect dry pavement. If the GC didn't have such a Great AWD system, I would have had to replace the tires the 1st winter. I think my BMW summer only tires were actually better than these in rain/snow.

Shame on Jeep for selecting such a crappy tire just to get 1-2 mpg higher rating. Tire Rack has many other all season tires that rate excellent for rain/snow/ice and are actually CHEAPER. From what I have read the only reason you would pick these tires is to have a lower rolling resistance, thus helping fuel mileage.

Jeep should realize that while most people don't want/need AT Tires, they should have selected a more capable all season tire.

As for this latest video, if the driver would have just pulled forward on the initial getting stock/rocked it a little more it would not be stuck. So yes some driver skill can correct for crappy tires.
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  #54  
Old 03-28-2015, 01:07 PM
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Re: "I don't know how to drive in snow/ice, so I blame my GC" Part Deux

Quote:
Originally Posted by Zhe Wiz View Post
IMHO if you're not using WINTER tires, you're using SUMMER tires, though that wasn't my point. Point is if all four tires were spinning, the AWD system wasn't the problem. If NO tire has traction (summer, winter, all weather, all terrain - doesn't matter) the AWD system will not help no matter how good it is.

But yes, where are the inclined rollers when you need them?? His situation was the same as if all 4 tires were on free spinning rollers. No AWD system will climb THAT hill. Stop the rollers under ONE tire (give it traction) and THEN let's see what happens. Then we'd have a meaningful test.

Not A GC, but take a look here starting at 15:20. By minute 16:40 they put the Land Cruiser with all 4 wheels on rollers. Of course it fails, but as the Land Cruiser begins to spin all 4 tires...they don't all spin at the same rate (speed) because of the traction control interaction. I want to believe (but I could be wrong) that our Jeeps would not let all 4 wheels spin freely at the same speed, even though none of them have traction. In other words, it would behave similar to the LC on all 4 rollers in a similar circumstance.

Nor do I believe that in the case under discussion here, all 4 wheels on a frozen/snowy ground had equal amount of...no traction. Of course I could be wrong, but I find it hard to believe that there wasn't some mechanical/electrical failure there.

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Old 03-28-2015, 06:46 PM
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Re: "I don't know how to drive in snow/ice, so I blame my GC" Part Deux

I drove my 2WD '11 Laredo X all winter in worse ice / snow conditions than shown in that video and didn't have one bit of trouble getting around. Fairly new Goodyear Wrangler SR-A's and keeping a level head during hazardous conditions pretty much did the trick.
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Old 03-28-2015, 07:23 PM
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Re: "I don't know how to drive in snow/ice, so I blame my GC" Part Deux

f1anatic, good video, interesting tests there.

Yeah joplin, I agree with you, experience and skill go a long way, and then better equipment (4wd systems, traction control, tires etc) serve to expand the driver's performance capability envelope. I'm fortunate to have grown up in the northeast USA and learned to drive in winters. Fortunate, too, that I did not have any accidents.

In the spring of '83 I drove cross country, San Francisco to Albany NY. A bad late winter storm hit and followed me westward, there was heavy snows and ice through the Sierras, then in the Rockies and the high plains states, in Chicago, and then again on the NY Thruway. I got through okay in a Fiat X1/9 (small 2-seater, mid-engined car), with regular street tires and not even all-season tires, while many drivers in 4WD rigs, high clearance and better tires had accidents. There were many, many cars wiped out during that storm across several states.

My point in mentioning this is that if you can get the experience and learn the skills, a modest 2WD car can get you through many winter scenarios, even like that Jeep stuck in driveway video.
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