35 inch KO2 vs Cooper Discoverer STT Pro

B-man

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I’m considering replacing my coopers (only 5k miles) due to their not handling well on packed and fresh snow in town and I have a pull to the right on my steering all the time that they may be causing as well (there’s another thread about this).

My old stock 33 inch KO2s (which are narrower than the 35s) were great in the snow. I am considering switching into the KO2 35s (I have a 2.5 inch lift) for better snow traction. But they are wider than the 33s and am wondering if that will offset much of their effective in the snow.

Does anyone have experience with the 35 KO2s in the snow? How are they?
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irishtim7

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I’m considering replacing my coopers (only 5k miles) due to their not handling well on packed and fresh snow in town and I have a pull to the right on my steering all the time that they may be causing as well (there’s another thread about this).

My old stock 33 inch KO2s (which are narrower than the 35s) were great in the snow. I am considering switching into the KO2 35s (I have a 2.5 inch lift) for better snow traction. But they are wider than the 33s and am wondering if that will offset much of their effective in the snow.

Does anyone have experience with the 35 KO2s in the snow? How are they?
You're right, the STT Pros really aren't all that great in snow. If snow performance is your main concern, I would give the Goodyear Duratrac a look as well. IME they are better than the KO2's in the snow. I ran 315/70/17 Duratracs on my JKU and was very happy with winter performance. They're a bit louder than the KO2's.
 

Discount Tire

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Wider tires tend to "plow" if you will, in deeper snow, so that may be a consideration if you see this type of condition frequently. Being wider shouldn't vary much under hard pack conditions and in fact, the higher sipe density with the wider tire may actually improve the performance in this area.

Ice is a consideration as well, and the argument can be made that narrower tires perform better (focused contact patch) however it's ice and really, studs are the only way to improve ice performance.
 

Carlton

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Wider tires won't perform as well in on-road winter condtions. They will float more so. Will the inch difference between the widths make a large difference? I'm not certain.

As previously stated, the GY Duratrac is amazing in winter. I've had both the Duratrac and KO2 (same size) and their was no comparison.
 

JRod

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My 35/12.5r17 KO2s on my JKU were amazing in the snow. We only get snow like once a year, so I don't have a ton of experience, but in the 6 snows I had them, I never once felt unsafe or at risk of getting stuck. I've also heard the Duratracs are great too, I was going to go with them way back in the day, but they were out of stock at the time so I went with the KO2s.
 

OnlyOne

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I would definitely go to the KO2. After having the Duratracs on my Power Wagon, I will never look at them again. Nowhere near as good as the BFG. Not even close. I run in snow daily up here. The GY might be ok in different areas of the country that get very little snow. I was excited to have them when I first purchased my PW but in my personal experience, they were terrible. Not to mention the absolutely horrible weak sidewalls on the Duratrac. Hell I got 2 punctures from a gravel road. I will say my PW weighs in at over 7k lbs but never had any issues with the KO2.
 
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Strommen95

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Duratracs are by far the best AT for snow and slushy conditions. The KO2s don't compare there. If you're not in a serious snow region though you'll be just fine with the KO2s. Otherwise KO2s are better on pavement and offroad I found both to be relatively equal.
 
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