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Old 11-18-2015, 07:20 PM
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Question Lateral grip issues with aging Duratracs on wet roads?

I love the Wrangler Duratracs I put on my WK2, but it seems like as they wear they're getting more and more unpredictable around curves in the wet.

Yes, I realize that they're not performance tires, and a WK2 is not a performance car. I'm not driving it with those expectations. Never have. It just seems like the limits of lateral grip are getting lower with age. Braking and acceleration traction doesn't seem to be suffering.

So has anyone else with Duratracs noticed this?

Second question: if you have Duratracs, what tire pressure do you run them at? I don't seem to have uneven wear suggesting over/under inflation or an alignment issue, but I'm looking for more data to chase down my issue.

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Old 11-20-2015, 10:35 AM
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Re: Lateral grip issues with aging Duratracs on wet roads?

I also have been running Duratrac on my last two GCs. Since new on this latest GC Overland. Lately, I kept thinking they (or something) was getting noisier than usual in the front. I just noticed uneven wear on the front tires. Very weird uneven wear. I found something similar on the net, and it is sometimes called "scalloping" (which would seem to be the cause of the excess noise). Basically, when you look at the front tires from the side, looking straight at the wheel say, the external knobs are worn on a slant from front to back. Moving your hand on the outside portion of the contact area, you feel the difference in height from front to back of each knob. Never seen anything quite like it. A handful of "reasons" are listed as possible causes for this, one of which is alignment. Also soft shocks, wheel bearings, wheel balance, tire rotation (lack of)... I run them at 36 PSI. They are not great at cornering on water, even with all the bells and whistles (anti-slip, etc...), I have had all for wheels slide sideways a few inches on wet pavement. I guess the easy fix is slowing down a little.

Is this similar to what you are seeing ?
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Old 11-20-2015, 04:54 PM
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Re: Lateral grip issues with aging Duratracs on wet roads?

It's similar, and they've slipped a little since new. Now it's to the point where I experience understeer or 4-wheel slip at speeds as low as 15-20 in a roundabout. It wasn't like this when the tires were new.

As for your scalloping, is it all the way across the tire, or just the outside edges? If just the outside edges, I'd get the alignment checked. My guess is you have more toe-in that spec and possibly less camber as well. All the way across points to soft shocks or the other potential culprits you mention.
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