BFG KM2s VS KM3s - JeepForum.com
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  • 2 Post By mukluk
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post #1 of 15 Old 03-29-2019, 02:19 PM Thread Starter
Guy_Van_Horn
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BFG KM2s VS KM3s

I currently have a set of 32X11.50R15 BFG KM2s on my jeep, and I really like them.

I'm looking at getting a set of 35X12.50R15 tires, and was planning on another set of KM2s, but I'm wondering if I should consider the KM3s. Does anyone have experience with both these tires and what is your opinion of them? Also, the 15" wheels I have are 8" wide, but I noticed the specs for both these tires recommend a wheel in the 8.5-11" wide range. I'm wondering if I could get away with using the wheels I have (they're new aluminum five spoke wheels), or am I just asking for trouble if I do? I tend to prefer a taller aspect ratio anyway, so if there isn't danger of them coming off the rim, I might keep them. Thoughts?

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post #2 of 15 Old 03-29-2019, 02:36 PM
mukluk
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No experience with the KM3, but I will say that a 12.5" wide tire on an 8" wide wheel is perfectly fine and safe. In fact, it's about the most popular and common combination you'll find offroad.

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post #3 of 15 Old 03-29-2019, 02:53 PM
Jerry Bransford
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X2, stick with a 15x8 wheel for those 35x12.50 tires. I'd only consider a 15x10 wheel if your rig never leaves the street, which is not to say the 15x8 is not fine on the street too. I've been running nothing but 15x8 wheels for 35x12.50 tires for at least 18-19 years and wouldn't change the wheel size for anything. That new KM3 looks like a great new tire with an even stronger sidewall, I'd definitely choose it over the KM2.
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post #4 of 15 Old 03-29-2019, 04:08 PM
bonza
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I asked the same question sometime ago https://www.jeepforum.com/forum/f15/...ygood-4338427/


would still like to know about anyones real world experience with KM2 vs KM3 as am looking to upgrade later in the year
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post #5 of 15 Old 03-29-2019, 04:30 PM Thread Starter
Guy_Van_Horn
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Thanks guys, glad to hear you think the wheels are okay.
The only thing about the kM3s that give me some slight pause, is that the tread depth is slightly shallower, and the tread lugs are closer together. But they are supposed to be stronger in the sidewall (and the weight is higher as a result) so that's a plus for survivability on rough trails.

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post #6 of 15 Old 03-29-2019, 05:52 PM
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I havenít run km2s, but I did get km3s in the summer. So far they have been a great tire (probably only have ~3k on them). Have no issues with noise, they balanced great which was an issue I had with my last 2 sets of different tires. Havenít really put them through a lot off-road yet, but the few trips I have done they had solid grip. Theyíre not the best for snowy and icy roads but do a pretty good job for a mud tire
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post #7 of 15 Old 03-29-2019, 06:19 PM
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They just had a write up on them in the Peterson’s 4 wheel and Offroad this month. I’ve had the km2 and they were siped in a way that looked like the km3. I need new tires myself and I’m thinking these or the Cooper Discoverer STT pros. The article said that the new design adds 20-30% more strength all around without adding a lot of weight. It also stated that the tire was designed to self clean better than the previous model since the spacing is wider. The review was good overall. You could probably find the article it was on Christian hazels, “Why-J”.
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post #8 of 15 Old 03-29-2019, 07:32 PM Thread Starter
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Quote:
Originally Posted by Quigley360 View Post
They just had a write up on them in the Petersonís 4 wheel and Offroad this month. Iíve had the km2 and they were siped in a way that looked like the km3. I need new tires myself and Iím thinking these or the Cooper Discoverer STT pros. The article said that the new design adds 20-30% more strength all around without adding a lot of weight. It also stated that the tire was designed to self clean better than the previous model since the spacing is wider. The review was good overall. You could probably find the article it was on Christian hazels, ďWhy-JĒ.
This article?
http://www.fourwheeler.com/how-to/wh...errain-ta-km3/

I scanned through that about a month ago. I'll have to go back and read it more in depth now. Thanks.

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post #9 of 15 Old 03-30-2019, 01:41 PM
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I wouldnít get KM2ís again. In fact, I didnít. They were a nightmare to balance and took a TON of weight. This alone kept me away from them


They lasted a while, but wore horribly. To be fair, there could have been other suspension factors at play, but man were they miserable the second half of their life. This last part wasnít a factor in my decision to skip buying them again, because the multiple trips to multiple shops trying to get them balanced was enough to tip my scale in a different direction this time(got Falken MTís this time)




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post #10 of 15 Old 03-30-2019, 04:28 PM
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Quote:
Originally Posted by SeanCucf View Post
I wouldn’t get KM2’s again.
I usually keep my mouth shut when these tires come up, but couldn't agree with this more. I think KM2s are one of the most overrated tire on the market. Their sales and popularity are probably a testament to BFG marketing machine. There are so many real MT options to consider before them.

Perhaps KM3s are an improvement, but given the choices out there I'm not sure why I'd take the chance.
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post #11 of 15 Old 03-31-2019, 10:51 AM Thread Starter
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Quote:
Originally Posted by SeanCucf View Post
I wouldnít get KM2ís again. In fact, I didnít. They were a nightmare to balance and took a TON of weight. This alone kept me away from them


They lasted a while, but wore horribly. To be fair, there could have been other suspension factors at play, but man were they miserable the second half of their life. This last part wasnít a factor in my decision to skip buying them again, because the multiple trips to multiple shops trying to get them balanced was enough to tip my scale in a different direction this time(got Falken MTís this time)




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Hmmm... I've had a different experience with my KM2s. They are wearing really nicely, and no balancing problems to speak of. Of course, mine are only 32's, so maybe they don't have as many issues as the larger sizes?
Thanks for the input.
I'll probably go with the KM3s.

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post #12 of 15 Old 04-02-2019, 06:32 PM
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The KM2s are simply amazing tires! I have been using them on multiple Jeeps ever since they came out. The only complaint that I have ever been able to offer is that the sidewalls are easily punctured.

While the KM3s sound like a much improved evolution of the KM2s, I have two concerns about them that will likely lead me to stray away from BFG.

1) The KM3s are ugly! The directional sidewall pattern appears to twist with rotation on one side of the vehicle and against rotation on the other side. It reminds me of cheap wheel manufacturers that only cast/machine one wheel instead of two directional opposites.

2) BFG claims that the KM3s are not much heavier despite being stronger. I cannot help but wonder how much weight was saved by the decrease in tread depth (which likely represents a nice cost savings and more frequent future sales for BFG at an added expense for their customers).
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post #13 of 15 Old 05-15-2019, 08:32 AM
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I've been running KM2 37 x12.50 x17 for a long time and the only problem I could say is the older they get the louder they are. But wear evenly and drive straight. I'm now in the market for a replacement and have considered KM3 but also heard good things about the Cooper STT Pro. Anyone know the weight difference?
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Last edited by jacksjeep55; 05-15-2019 at 06:53 PM.
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post #14 of 15 Old 05-22-2019, 12:49 PM
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I haven't run the KM3, but the KM2 was the worst tire I've ever put on a Jeep. In fact, one of the worst tires I've ever experienced on any vehicle. What an over-rated, noisy, low traction, poor wearing, over-priced pile of crap. I guess brand recognition is a very strong drug, because if they didn't have BFG on the sidewall they would be the most hated tires on the market.

It was a real shame, too, because the KM1 was totally the opposite. It pulled in the mud like a dozer and had great wear characteristics.

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post #15 of 15 Old 05-22-2019, 01:39 PM
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BFG KM2s VS KM3s

I have had km2ís for the past 6 years and they have preformed great never ran into any major issue.i just rotated them frequently .Only real complaint I have had is they got pretty noisy towards the end of their life. That kind of expect with this style of tire.

Forgot to add, I have a new set of Km3ís waiting to go on the Jeep!
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