The Krawler K/X revolutionized the rock crawling
world when it debuted. Since then, the Krawlers have won several
titles in tons of different forms of off-road competition. But how
would they work for the "Average Joe"? Off-Road.com decided to put
the mighty Krawler to the test.
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This was the pleasant surprise that arrived at my
doorstep. A set of blue sticker BFG Krawler K/Xs. Without
air in them they measured 34.75 inches tall and weighed in at 80
lbs each.
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I decided to mount up the 35x13.50r15 Krawlers on
a wheel suitable for the abuse to come, so I put them on a set of
15 inch, Allied 32-bolt bead locks. This way, we could air down the
Krawlers to rockcrawler-range of air pressure and be certain to
hold the bead.
I'd like to note that for a
35 inch tall tire, the Krawlers actually measure 34.75 inches tall
without air in them at all! Yes folks, we have a tire that is
pretty dang close to what it claims says to be, which is rather
rare as most off road/ rockcrawling tires can be much
shorter than the advertised height.
However, we must pay the price of having that much more tire
apparently, as these guys aren't light. The Krawlers weigh in at 80
pounds per tire, according to the UPS tag that was slapped on them.
But you probably don't plan to be speeding around if you were even
considering a set of Krawlers, so do you care if they're
heavy?
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Here's a Krawler I mounted to a 15x8 Allied bead
lock in my home because it was snowing outside! This was enough of
a process mounting these huge tires, and I wasn't about to do this
in the middle of a snow storm. So the whole install was done in my
living room.
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Our Krawlers were of the "blue sticker" compound,
which is a slightly stiffer and longer-lasting tread compound than
the super soft "red sticker" competition compounds, which have won
such acclaim in the rockcrawling world.
Anyone familiar with mounting bead locks knows just how much
of a time-consuming process it is. After I was done mounting these
tires to the 32 bolt Allied wheels, I personally wanted to have a
long lasting tread compound and was more than happy to give up a
little compound softness so I wouldn't have to be mount up another
set any time soon. I had them balanced at a local tire store and
had the Krawlers filled to 30 PSI.
After
the first drive on the Krawlers, my initial observations were that
these tires were reasonably easy to balance, and had decent road
manners for being so heavy and aggressive. While noticable, road
noise is actually less than I expected. I can say that I've had
tires that weren't anywhere near as aggressive that were much
louder on the road. You can definitely feel the aggressive lugs in
corners through the steering wheel as you make tight turns.
But perhaps the most-noted observation after you
first mount up a set of Krawlers on to your rig is that they
closely resemble the tread pattern found on tractors and those huge
military transport trucks. The Krawler looks like a down-sized but
slightly more-aggressive spin off of that design.
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Once the Krawlers were mounted up on the TJ, I
would have to wait two long weeks before getting the chance to test
them on a trail! Luckily it had snowed so I could at least play
around on the roads in the mean time.
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I drove around on the Krawlers for almost two long
weeks before I got a chance to try them on their home turf on the
trails. After two weeks of driving through icy roads, deep snow and
rainy roads however, I can say that the Krawlers handled themselves
very well for a tire that was so heavy, and didn't have any siping
in the blocks. In deep snow they required very little wheel spin to
clean the tread face and move the Jeep. On more than one occasion
it would rain after dropping down several inches of snow, leaving
behind a particularly slick and thick slush that ordinary tires
where having a very difficult time getting around in. The Krawlers
excelled here by just evacuating the thick slush out of the way,
leaving a completely cleared wide path behind them. They had
literally picked up all the slush and thrown it off. I can't say as
I've seen a tire do that before. Ever. This hints to me right away
that these tires are going particularly shine in your local mud
pit.
Icy roads are usually difficult for
many of the larger block tread designs, but I found the Krawlers to
still get around. Nothing too spectacular, but I can honestly say I
didn't need tire chains - just slow, cautious driving to get
around. I think the extra width that the 13.50" wide foot print
really does helps out here by making more rubber available to icy
road surfaces.
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Here is one abused tire. Its been subjected to tree
roots, sharp rocks and severe pinching of the side wall. As you can
see, it's a little dirty, but not a single cut can be seen. The
wheel however got some new scratches on about 10 of the bolts and
1/4 of the ring.
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Then it was finally time to test the Krawlers on
the trails. I went up to Big Bear California to the "John Bull"
trail, to conduct what would an interesting test of the Krawlers.
The John Bull is a reasonably-tough trail even under good
conditions, that now had two feet of snow on it in areas. The snow
had made the nice clay road to the trailhead a two-mile-long mud
pit. This was the perfect time to see how the Krawlers would fair
in some pretty sticky mud.
I gunned it and
plowed into the mud. The first thing I noticed was how good the
Krawlers were at self-cleaning. They were throwing mud all over the
place with very little wheel spin. I was able to stop in the middle
of several two-foot deep mud pits and pull out with no problem.
They did much better than I had expected in the mud, for a
rockcrawling-designed type of tire. The Krawler is most definitely
capable of competing with the proven mud tires currently
produced.
The only thing you have to watch
for is that these tires love to dig. Even with their 13.50 wide
tread face, they will dig to find the firm base and pull you
through. You'd need a tall rig if you were going to go through deep
mud pits with a set of Krawlers. The tires won't load up, but they
may dig until you get stuck.
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These tires love to conform to rocks. Here the
sidewall is actually pinched.
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On the John Bull trail there were some sunny
sections where the snow had gone away and melted already, but in
other shady areas, the snow sat atop the rock gardens in a rather
slushy form. Anyone who has ever been rockcrawling before, knows
that wet rocks are by far more difficult to climb over than dry
ones. So obviously, two feet of slushy snow made this trail much
more difficult. But it did give me a chance to test the Krawlers in
both wet and dry rocky conditions.
I found
the Krawlers would grip equally well to either dry and wet rock.
With the Krawlers aired down to 9 PSI, I was able to point the Jeep
at any line in the wet slushy rock sections and slowly idle the
Jeep through without any side-to-side slipping. The Krawlers
conformed to the rocks very well, and the side lugs really helped
grip and turn on rocks. I never had the, "I shouldn't turn or I'll
slip off the rock I'm on" feeling that I've had with other tires on
wet rock sections. I felt confident with the side bite these tires
displayed. In the dry rock I thought I might be able scuff up the
sidewalls, or perhaps even puncture them on some roots or sharp
rocks. However, I had these tires pinched, poked, and stabbed by
everything I could roll them onto, and I never once was able to
even scuff the tires. Their durability was impressive.
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This was a rather difficult, up-hill climb in
two-foot deep snow. Below the snow pack was about two inches of
sheet ice. Did the Krawler still pull my TJ through? You bet!
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The Krawler K/X pulls my 2000 TJ up a steep snowy
hill. Often times I was capable of doing some of these pulls in
2wd, which was unheard of with other tires I've owned. Notice the
rather wide path the tire plows.
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At 8 PSI in the Krawler, I'm surprised the tire
didn't just engulf the rock as a whole! This particular rock had a
sharp point to it and I was impressed that the rock didn't even
scuff the durable rubber compound used.
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On the rocks, you just can't beat
the Krawlers. This is most definitely where they feel most at
home.
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These Krawlers allow you to set your rig on wet
rocks without worry of slipping off.
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If you're in the market for an extreme
performance tire for your rock rig, you should consider the
Krawler. The price tag is high, but you'll find that these tires
earn their way on the rocks, in the mud, snow, ice and even on the
road. They get the highest score for durability, and you just can't
beat the drool factor.
Think of these kind
of like "bling" for rockcrawlers!