[BobX2]

Another thing to keep in mind when shopping for tires is the load rating. Anyone who is familiar with trailer tires knows the importance of load ratings. When I first started looking at tires for the KRX, I was really interested in the Maxxis Rampage. (35.9 lbs.) Then I looked at their load rating. 606 lbs per tire is their max rating. A set of four would give you 2,424 lbs max machine weight. The 32" Carnivore (37.7 lbs.) is only slightly better at 617 each, 2,468 lb total. We all know that when our KRX is loaded up for the trail, and both seats are full, we are every bit of 2400#. The Maxxis tires are at their safe load limit, with very little wiggle room, if any. One thing you give up in a light weight tire is load capacity.
The BFG KM3 (44 lbs.) has a tremendous load rating, 1,936 lbs, yet it does not sacrifice anything in it's great ride.
There appears to be a direct correlation between tire weight and load rating.

Some numbers;

BFG KM3

• Section Width on Measuring Rim Width: 10.00" on 8.00"
• Overall Diameter: 32.0
• Max Load, Single (LB @ PSI): 1936 @ 44
• Sidewall: Raised Black Letters
• Revs/MI: 650
• Tire Weight: 43.98
• Rim Width Range (Min/Max): 6.00" - 8.50"
• Tread Depth (in 32nds): 18.0

Maxxis Rampage

Tire Size: 32x10.00R15

• Sidewall: Black
• Position: Rear Tire
• Ply Rating: 8
• Max Load: 606
• Section Width: 10
• Rim Size: 15x7
• Tread Depth: 20/32
• Overall Diameter: 32.3
• California Residents: WARNING

Maxxis Carnivore

• Tire Size: 32x10.00R15
• Sidewall: Black
• Position: Front and Rear Tire
• Ply Rating: 8
• Max Load: 617
• Section Width: 10.3
• Rim Size: 15x7
• Tread Depth: 28/32
• Overall Diameter: 32.3

EFX MotoClaw

• Size: 31x10R15
• Side Wall: Black
• Overall Diameter: 31"
• Max Load: 1000 lbs
• Lug: 1
• Speed Rating: 80J
• Tread Type: Trail A/T
• Rim Range: 15
• Ply: 8 Ply Radial
• PSI: 22
• Weight: 42.4 lbs

 

[Jraoffroad]

Load rating means very little on an offroad tire. It's the load a tire can handle at max psi and max speed rating for a sustained amount of time. It's also completely worthless without being listed like it is for the BFG above.

 

[Alex1224]

Thank you Bob, a lot of people do not know what they are looking at when they are shopping tires. Hopefully they will look deeper into the specs!

 

[UT-Scott]

Hello,
I‘m new as an official forum member but have been lurking for some time. I upgraded to 33x9.50x15 System 3 rt 320 tires. I weighed them on our bathroom scale and they came in at 41.6 lbs vs the 31” stock Carnivore at 34.2 lbs. They are 32.25” tall at 10psi on the machine With OEM wheels. I will have to check with higher pressure... at 10psi they are definitely bulged at the bottom and loosing some height. Performance wise, I really can’t feel any decrease in performance due to slightly higher weight and bigger diameter. We road in Green River Utah desert with a mix of sand, loose dirt and some rock crawling and they did great as far as I’m concerned. With that said, the stock Carivores were also good in those conditions.
Just thought I’d share if anyone is considering these tires. I can post pictures if anyone is interested, I’ll just have to figure out first 😀

 

[BobX2]

Hello,
I‘m new as an official forum member but have been lurking for some time. I upgraded to 33x9.50x15 System 3 rt 320 tires. I weighed them on our bathroom scale and they came in at 41.6 lbs vs the 31” stock Carnivore at 34.2 lbs. They are 32.25” tall at 10psi on the machine With OEM wheels. I will have to check with higher pressure... at 10psi they are definitely bulged at the bottom and loosing some height. Performance wise, I really can’t feel any decrease in performance due to slightly higher weight and bigger diameter. We road in Green River Utah desert with a mix of sand, loose dirt and some rock crawling and they did great as far as I’m concerned. With that said, the stock Carivores were also good in those conditions.
Just thought I’d share if anyone is considering these tires. I can post pictures if anyone is interested, I’ll just have to figure out first 😀

Glad to have you signed up as an official member. Welcome aboard.

 

[Rockcrusher]

So finally mounted the KM3 i had sitting here for awhile before my last trip didnt like the looks of them mounted compared to the carnivore meaty squared look but thats where the difference ends extremely satisfied with performance they are extremely sticky crawling, high speed cornering they stay in what ever groove you point it at no under over steer, so anybody wanting a desert mountain crawling tire for the price couldnt be happier with them.

 

[TexomaScott]

Xtr370, 33" for the win. love em.

 

[Rockcrusher]

Xtr370, 33" for the win. love em.

How do they wear definitely cost more but do look good.

 

[TexomaScott]

Like Em Alot can air em down or up for needs and hang tough for all. But tires are like women all personal preference. 😊

 

[Snoking]

My STI Xcomp A/T:

X Comp AT
SIZE	PLY RATING	OVERALL DIAMETER (Inches)	TREAD DEPTH (Inches)	MAX PSI	MAX LOAD CAPACITY @ 18 PSI	TIRE WEIGHT (Pounds)	PART #
33 / 10R-15	10	32.5	0.469	36.0	1475 lbs.	47.6	001-2048

 

[snuffnwhiskey]

So finally mounted the KM3 i had sitting here for awhile before my last trip didnt like the looks of them mounted compared to the carnivore meaty squared look but thats where the difference ends extremely satisfied with performance they are extremely sticky crawling, high speed cornering they stay in what ever groove you point it at no under over steer, so anybody wanting a desert mountain crawling tire for the price couldnt be happier with them.

I will say the KM3 on the east coast is one of the worst tires I've saw. Wet or water/mud rocks spin bad and pack easy here and don't steer. Out west they look to do excellent.

 

[Rockcrusher]

I will say the KM3 on the east coast is one of the worst tires I've saw. Wet or water/mud rocks spin bad and pack easy here and don't steer. Out west they look to do excellent.

I would agree mud is not there strong suit, i was surprised how sticky they were. Was going to buy another set of rims mount Zillas for Moab i think i will try these.

 

[BobX2]

I would agree mud is not there strong suit, i was surprised how sticky they were. Was going to buy another set of rims mount Zillas for Moab i think i will try these.

Definitely save your money and don't worry about Zillas for Moab. The KM3 will crawl up anything you want to tackle out there. If you ever get into any snow with them, you will be amazed with them there as well. All that and they are a great wearing tire also. Don't know how they do that...

Last year when I climbed this it was wet and raining. A little bit of tire spin then, but still climbed up with no problem at all.

New video by Bob Laws

photos.app.goo.gl

 

[Paul65]

I'd love to try that on the LT tires. Seriously, just to see. Because around here they do anything the XTR 370's do. I guess that means we don't have much challenging stuff!!! LOL. The KRX is such a capable machine, I just drive it different when on different tires, and it just does it. For sure climbing 45 degrees up a creek bank, either tire works. Done it multiple times. The long wheelbase of the KRX really helps you get over the hump.

Rock crawling I'm sure it would matter more which tire. We just don't do that here. You can, but I don't go to those places.