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Old 04-12-2011, 02:57 PM   #1
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MTR or KM2??

I've been looking at forums and reviews on different websites and can't decide which tire to go with. I hear good things about both, but I'm leaning towards the KM2s due to what I hear about road noise and off road performance. What I'm worried about though is that the MTRs have that fancy kevlar in the sidewall and I want that...I'd hate to get some KM2s and have the sidewall rip apart.
Any thoughts? Also these aren't going in a daily driver, just my tj that I drive to trails, wheel, then drive home (see profile picture). So I'm hoping road noise isn't terrible.

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Old 04-12-2011, 03:04 PM   #2
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I have 33x12.50 Kevlar MTR's and love them, I am not sure how new KM2's are, but when i first got my jeep, the PO had some worn out KM2's on there and they were WAY noisier than my MTR's (maybe it was bad rotation ware I dunno)
But so far I couldn't be happier with my choice, plus they grab well here on the Utah rocks

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Old 04-12-2011, 03:07 PM   #3
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i guess it depends on if you do more mud or rocks. when i got my baja claws over the mtrs it was because i do more mud.
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Old 04-12-2011, 03:24 PM   #4
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Maybe look at an STT
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Old 04-12-2011, 03:41 PM   #5
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Just baught Mtrs and I don't like them.. Jeeps my DD and for 31's they are so load and hard as hell also 3000 miles and are wearing fast. Some people like them but I don't. Looking to sell soon. I like the duratracs.
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Old 04-12-2011, 04:57 PM   #6
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Quote:
Originally Posted by rugbywinger View Post
I've been looking at forums and reviews on different websites and can't decide which tire to go with. I hear good things about both, but I'm leaning towards the KM2s due to what I hear about road noise and off road performance. What I'm worried about though is that the MTRs have that fancy kevlar in the sidewall and I want that...I'd hate to get some KM2s and have the sidewall rip apart.
Any thoughts? Also these aren't going in a daily driver, just my tj that I drive to trails, wheel, then drive home (see profile picture). So I'm hoping road noise isn't terrible.
Which is right depends on what you wheel on. For areas with sharp rocks and/or extremely difficult trails, the MT/R is the correct choice because it is more aggressive and far more cut resistant. For general purpose offroading without sharp rocks, the MT KM2 is a good all-around tire.

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Just baught Mtrs and I don't like them.. Jeeps my DD and for 31's they are so load and hard as hell also 3000 miles and are wearing fast. Some people like them but I don't. Looking to sell soon. I like the duratracs.
MT/Rs that ride too stiffly are either the wrong load range (like D or E when it should be a C Load Range) or they are overinflated. What Load Range MT/R and tire pressure are you running?
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Old 04-12-2011, 06:19 PM   #7
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[QUOTE="Jerry Bransford"]Which is right depends on what you wheel on. For areas with sharp rocks and/or extremely difficult trails, the MT/R is the correct choice because it is more aggressive and far more cut resistant. For general purpose offroading without sharp rocks, the MT KM2 is a good all-around tire.

MT/Rs that ride too stiffly are either the wrong load range (like D or E when it should be a C Load Range) or they are overinflated. What Load Range MT/R and tire pressure are you running?[/QUOTE

Load range E, I picked up a set of rubi moabs that had 1 new spare (did not pay for the used tires, just rims) and since the spare was new, I asked for the same tire. Only difference is the mtr style changed. The spare is Load E also and this is what was put on the rubicon. I'm sure the rubi is heavier then my sport but don't understand a load E tire. After i bought them, ive read others asking the same and seems that load is the only option for either this tire or the size ???

Also 28-30 psi should I go lower?
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Old 04-12-2011, 07:01 PM   #8
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The Load Range means what weight the tire is designed to carry. A Load Range E tire is designed for vehicles that are much heavier than a Wrangler so it is made more stiffly, which is the reason your particular MT/Rs ride so stiffly.

With the correct Load Range C MT/Rs, they would ride fine. For your size tire, assuming it's approximately 31-32", that psi is fine.
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Old 04-12-2011, 07:38 PM   #9
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Quote:
Originally Posted by Jerry Bransford
The Load Range means what weight the tire is designed to carry. A Load Range E tire is designed for vehicles that are much heavier than a Wrangler so it is made more stiffly, which is the reason your particular MT/Rs ride so stiffly.

With the correct Load Range C MT/Rs, they would ride fine. For your size tire, assuming it's approximately 31-32", that psi is fine.
Why they put load e on rubicons?
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Old 04-12-2011, 07:41 PM   #10
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Because for style reasons, Jeep went with 16" wheels for the Rubicon and the only MT/R tire sizes that are made for 16" wheels are Load Range E. That's one reason why my Rubicon's 16" wheels were replaced with 15" wheels. My 35x12.50x15 MT/Rs are Load Range C.
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Old 04-12-2011, 07:52 PM   #11
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Why they put load e on rubicons?
according to one tire shop its because thats all the mtr was available in when it first came out. but who knows for sure. i had load range e on my 1 ton, i dont know why a wrangler would need that.
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Old 04-12-2011, 07:52 PM   #12
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Quote:
Originally Posted by Jerry Bransford
Because for style reasons, Jeep went with 16" wheels for the Rubicon and the only MT/R tire sizes that are made for 16" wheels are Load Range E. That's one reason why my Rubicon's 16" wheels were replaced with 15" wheels. My 35x12.50x15 MT/Rs are Load Range C.
I did not know that previous to me buying them, just MTR's were a great tire and That was good enough for me. Not sure what I can get for a set of 31's with less then 3000 miles though? What a waste
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Old 04-13-2011, 10:17 AM   #13
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Thanks for the responses! Even though it got a little hijacked...but it's good information nonetheless!
I live in Colorado and so far have been wheeling in mud and light rocks mostly. But I plan to do much more wheeling this summer and I'm heading to Moab in month too. I'd love to have the peace of mind of a strong sidewall just in case...but I heard the KM2's upgraded the sidewall strength too. And lower road noise would be great to keep the woman happy.
This is killing me! I need new tires before Moab so I do have some time.
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Old 04-13-2011, 10:21 AM   #14
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My sis's 11 rubi has KM2's on it, they are wearing like crap and are noisy as hell....and she only has 7K on it
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Old 04-13-2011, 10:25 AM   #15
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Quote:
Originally Posted by rugbywinger
Thanks for the responses! Even though it got a little hijacked...but it's good information nonetheless!
I live in Colorado and so far have been wheeling in mud and light rocks mostly. But I plan to do much more wheeling this summer and I'm heading to Moab in month too. I'd love to have the peace of mind of a strong sidewall just in case...but I heard the KM2's upgraded the sidewall strength too. And lower road noise would be great to keep the woman happy.
This is killing me! I need new tires before Moab so I do have some time.
Usually apologize for a thread hijack but since it sorta stayed on topic I did not consider a complete hijack ( if even so ).

Well sorry anyhow
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Old 04-13-2011, 10:29 AM   #16
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Got my km2's about a month ago. I drive about 150 miles a day and they are great. Low noise, clean well in the mud and ride very well. I hear the Mtrs are great tires as well but I've never run them.
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Old 04-13-2011, 11:00 PM   #17
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My 35x12.50x15 MT/Rs are Load Range C.
My 35x12.50-17 MT/Rs are Load Range C as well and the ride at 26 psi is nice and smooth. The mud traction is superb and they clean out well. Overall, they are fairly quiet on the highway too.
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Old 04-13-2011, 11:49 PM   #18
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Originally Posted by Jerry Bransford
The Load Range means what weight the tire is designed to carry. A Load Range E tire is designed for vehicles that are much heavier than a Wrangler so it is made more stiffly, which is the reason your particular MT/Rs ride so stiffly.

With the correct Load Range C MT/Rs, they would ride fine. For your size tire, assuming it's approximately 31-32", that psi is fine.
Does a higher load range indicate a tougher tire all around? Say if he wanted to get km2 and make up for lack of sidewall strength in the mt/r buy a tire 1 load range to heavy?
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Old 04-14-2011, 12:19 AM   #19
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Rather than play games with the Load Range, why not just get a Load Range C Goodyear MT/R whose kevlar-reinforced sidewall is well known for its resistance to cuts and punctures?
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Old 04-14-2011, 12:38 AM   #20
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Just giving him an option incase he really likes the km2's
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Old 04-14-2011, 01:20 AM   #21
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The bfg's have the 3ply side wall. not sure how well the km2s ride but the bfg mudder has always had good reviews good traction and strong side walls. The xtra tread on the side walls helps to reinforce, as well as gives you that xtra bite.

Have ran the bfg mudder in the past and its a great tire, lots of traction they clean well and you get some pretty good mileage out of them. Only reason I'm not running them right now is because the km2's were a month out on back order and I didn't wanna wait so I went with the pro comp..

All and all can't really go wrong with bfg provided you get the right tire for the right setup.

Oh yeah there ain't nothin wrong with a little howl as you roll down the hwy. It tells peeps to get the hell out of the way because you ain't screwing around with some pavement pounder... your out to get dirty.( how ever if you mean inside noise they run pretty smooth and quiet
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Old 04-14-2011, 01:26 AM   #22
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Does a higher load range indicate a tougher tire all around? Say if he wanted to get km2 and make up for lack of sidewall strength in the mt/r buy a tire 1 load range to heavy?
There is no lack of side wall strength in the km2s hence the 3ply side walls, part of there design was to allow for airing down. Lots of peeps use them for rock crawling due to strength and being able to drive it home afterwards (meaning dot approved!)
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Old 04-14-2011, 01:29 AM   #23
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Which is why I'm buying them.
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Old 04-14-2011, 01:33 AM   #24
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Lol. Have never tried the mtr's but I do know the bfg's are a great tire. Hope you like your choice and don't be surprised if you get into a spot you can't get out of on your own lol ... don't ask how I know this
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Old 04-14-2011, 08:20 AM   #25
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Having run several sets of BFG MTs, I'll just say they are definitely not up to the sharp rock type of rock crawling trails I run. They cut and punture too easily, the new KM2 included, and you just won't see any BFG MT KM or KM2 tires on those particular trails, though the BFG Krawler with its amazingly tough sidewall is one of the most popular and it does extremely well. Sometimes the BFG Baja is seen on combo racers/rockcrawlers on those same rocky trails. The two most commonly seen tires on sharp rocky rock crawling trails here in SOCAL are the BFG Krawler and the Goodyear MT/R with its kevlar reinforced sidewall.

So for most trails, the MT KM2 is great but I just wouldn't go with the KM2 if you have sharp rocks or other obstacles on your trails that are sharp. Despite their "Triguard" sidewall name, it's just not up to trails that have sharp objects on them, especially sharp rocks. For anything else, they're a superb tire.

Do a search on KM2 sidewall and from actual users that use them on sharp rocks, there are a lot of unhappy users. Here are just a few...

Bfg Km2 35x12.50x15 sidewall issues - JeepsUnlimited.com Forums
BFG KM2 sidewalls - Pirate4x4.Com Bulletin Board
KM2 sidewall question - JeepForum.com
BFG KM and KM2 tire Review
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Old 04-14-2011, 12:58 PM   #26
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Could km2's survive a trek through the rubicon and Moab? Those are kinda my life goal trails
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Old 04-14-2011, 01:01 PM   #27
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The Rubicon has a lot of rocks on it so I'd be wary but the KM2s would probably be ok. No problem with Moab, that is mostly sandstone that has very good traction.
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Old 04-14-2011, 01:23 PM   #28
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Km2 have any type of reputation in snow and ice?
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Old 04-14-2011, 08:28 PM   #29
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I checked out those links you posted and they help some. Seems like not everyone is having the same issues, but the weaker sidewall does stand out.
Trouble is the MTRs aren't in stock. I'll see what other options I have.
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Old 04-14-2011, 08:30 PM   #30
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I would look at a Duratrac over either one of them if your wanting to stay within the brand. I personally wouldn't run a BFG unless that is the last tire I could get.

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