Real World BFG KM2 Tire Measurments - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 18 Old 01-04-2015, 08:09 PM Thread Starter
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Real World BFG KM2 Tire Measurments

i'm looking at buying 37x12.50r17 BFG KM2's here in the near future. according to BFG's website, these tires are suppose to measure out at 36.8" tall but I have heard reports of them only hitting 35.5" tall. can anyone confirm the actual height of this tire with the manufacturers recommended air pressure?

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post #2 of 18 Old 01-04-2015, 08:57 PM
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It's been awhile but I think mine were 36 3/8". It's an okay tire, I have abused the heck out of them and have never had a flat. I have big cuts on the sidewalls and chunks of tread missing but none have ripped to the point of failure. Look around there is a lot of info on tires on this site.
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post #3 of 18 Old 01-04-2015, 09:04 PM Thread Starter
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I had a set of 305x70r16 BFG KM2's on my last truck and absolutely loved them. I ran them for about 3 years on that truck (GMC 2500 HD) and they still had about 50% tread life left when I traded that truck in on this Jeep. granted I don't put a lot of highway miles on a vehicle because I have a work vehicle but I still thought that was pretty darn good considering that was a 3/4 ton truck. I definitely need a great mud tire with good tread life. not many rocks where I live, mostly gumbo mud and sand.

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- 5.38 Yukon gears
- 40" Pro Comp MT2's
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post #4 of 18 Old 01-05-2015, 02:49 PM
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I have em in a 37x12.50x17. Love em. Seem to climb better than most of the other MT's out there. They are the lightest and probably smallest 37 though. Mine measure exactly 35 inches all mounted at 27 psi on my 4dr. Still look pretty strong though IMO. Here's a pic.

Last edited by Djar4; 01-08-2015 at 02:10 PM.
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post #5 of 18 Old 01-05-2015, 03:36 PM
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I have a set of 35" km2 on 15x8's and at 24 psi they measure 34.5" my buddy has a set of 37" km2 on 17x9 and parked next to each other I promise you his are a couple inches taller than mine, its a very obvious difference. Although i dont know the actual measurement of his, sorry. I guarantee they are a lot taller than 35"

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post #6 of 18 Old 01-05-2015, 06:24 PM Thread Starter
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Thanks for the replies. I was just wondering if i should go bigger than 37's if they measure out a lot smaller than they claim.

2011 Wrangler Unlimited Rubicon
- 3.5" Rubicon Express lift /w 1.25" BL
- 5.38 Yukon gears
- 40" Pro Comp MT2's
- Lot's of extra's
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post #7 of 18 Old 01-05-2015, 07:25 PM
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37's run closer to 35. I'll bet 35's measure 33. Still perform excellence though. I think they have a new 38x14.50 that might be a good solution. Good luck!
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post #8 of 18 Old 01-07-2015, 03:46 PM Thread Starter
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the problem with going bigger is BFG wants about $100 per tire for every size bigger you go. i'm not working with unlimited funds so i'm trying to decide before I order anything. i'm looking to order this Friday. I don't mind if the 37's run a tad smaller but 2" smaller is pretty much unacceptable.

2011 Wrangler Unlimited Rubicon
- 3.5" Rubicon Express lift /w 1.25" BL
- 5.38 Yukon gears
- 40" Pro Comp MT2's
- Lot's of extra's
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post #9 of 18 Old 01-07-2015, 03:50 PM
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My buddy with the 37 x 12.50 x 17 on 17x9 wheels will be here shortly. Let me see if I can get a measurement with a pic. If they measure less than 36" I'll be surprised. He has a 2014 JK. His only have about 40%-50% tread left BTW.

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post #10 of 18 Old 01-07-2015, 04:06 PM Thread Starter
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Quote:
Originally Posted by stretch79 View Post
My buddy with the 37 x 12.50 x 17 on 17x9 wheels will be here shortly. Let me see if I can get a measurement with a pic. If they measure less than 36" I'll be surprised. He has a 2014 JK. His only have about 40%-50% tread left BTW.
thanks man. i'm also running a 17x9 wheel so I should expect the same thing.

2011 Wrangler Unlimited Rubicon
- 3.5" Rubicon Express lift /w 1.25" BL
- 5.38 Yukon gears
- 40" Pro Comp MT2's
- Lot's of extra's
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post #11 of 18 Old 01-08-2015, 02:17 PM
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Totally agree with the price issue, that's how I ended up with 37's and not the 38's. They are smaller, but I don't know of any tire that's gonna measure out at the listed size. By the time you mount the tire and put weight on it there's always some sidewall deflection, hence shorter measured height. Here's a pic on a 17x9.
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post #12 of 18 Old 01-08-2015, 02:34 PM Thread Starter
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so your 37" KM2 is only measuring 34.5"? I can't hardly see the numbers on your tape. my computer won't let me enlarge it.

2011 Wrangler Unlimited Rubicon
- 3.5" Rubicon Express lift /w 1.25" BL
- 5.38 Yukon gears
- 40" Pro Comp MT2's
- Lot's of extra's
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post #13 of 18 Old 01-08-2015, 02:38 PM Thread Starter
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I went ahead and pulled the trigger today and ordered the 37's. even if they run short I just couldn't afford the next size up. it ended up costing me $2,020.00 for a set of 4. that is after taxes, mounting and balancing. I know I could find them cheaper online but by the time taxes were added, shipping cost and paying someone local to mount and balance them, they were just about the same price. plus by buying them where I did, they give me free lifetime balancing, rotation and patching for the life of the tire.

on another note, my tire shop told me that BFG is advising they are fixing to do away with several of the larger sized KM2's. so in a year or 2 I might not be able to find the 37" KM2's anymore.

2011 Wrangler Unlimited Rubicon
- 3.5" Rubicon Express lift /w 1.25" BL
- 5.38 Yukon gears
- 40" Pro Comp MT2's
- Lot's of extra's
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post #14 of 18 Old 01-08-2015, 02:50 PM
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Sorry about the pic. Had to resize it. Yes, its just under 35. Not sure what type of wheeling you do but I love mine. My buddy has 38x 14.50 Toyos on his jk and I go everywhere he does and think they climb better in the dirt/mud. Overall, a great tire IMO.
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post #15 of 18 Old 01-08-2015, 03:05 PM Thread Starter
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yes I have had them before on my last truck, a 2002 GMC Sierra 2500 HD. they are a great tire for what I mainly do which is mud and trails which is why I was only looking at the KM2's. I have owned a ton of offroad tires and IMO the KM2's are the second best all around tire there is.

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- 3.5" Rubicon Express lift /w 1.25" BL
- 5.38 Yukon gears
- 40" Pro Comp MT2's
- Lot's of extra's
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post #16 of 18 Old 01-08-2015, 03:07 PM Thread Starter
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when I get mine put on I will measure them before they go on a rim and then after they are mounted and on my Jeep for comparison.

2011 Wrangler Unlimited Rubicon
- 3.5" Rubicon Express lift /w 1.25" BL
- 5.38 Yukon gears
- 40" Pro Comp MT2's
- Lot's of extra's
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post #17 of 18 Old 01-08-2015, 05:19 PM
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Quote:
Originally Posted by CamoCop View Post
I went ahead and pulled the trigger today and ordered the 37's. even if they run short I just couldn't afford the next size up. it ended up costing me $2,020.00 for a set of 4. that is after taxes, mounting and balancing. I know I could find them cheaper online but by the time taxes were added, shipping cost and paying someone local to mount and balance them, they were just about the same price. plus by buying them where I did, they give me free lifetime balancing, rotation and patching for the life of the tire.



on another note, my tire shop told me that BFG is advising they are fixing to do away with several of the larger sized KM2's. so in a year or 2 I might not be able to find the 37" KM2's anymore.

Hard to beat the lifetime balance and rotate. I have it at Discount Tire and do it about once every quarter.

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post #18 of 18 Old 01-16-2015, 08:28 PM Thread Starter
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ok my 37x12.50r17's finally came in and I got them mounted up and put on my Jeep. I forgot to measure them after they were mounted on the rim but off of the Jeep. I did measure them after they were put on my Jeep so I could put the correct tire size diameter data in my Superchip Programmer. they measured out exactly at 35.5". they sure do look good!




2011 Wrangler Unlimited Rubicon
- 3.5" Rubicon Express lift /w 1.25" BL
- 5.38 Yukon gears
- 40" Pro Comp MT2's
- Lot's of extra's

Last edited by CamoCop; 01-16-2015 at 08:38 PM.
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