Nitto Trail Grappler "Iron Edition" long term review

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TrekboxX

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Hey folks! I’d like to share my experience with the Nitto Trail Grapplers I’ve been running on the 100 for the past few years. I normally wouldn't bother the forum with another tire thread, but the wear I've had from these has been exceptional. I figure I’ll need new rubber before winter, so I thought it would be a good time to write the review. They are 285/65-18’s, and I rotate the spare through. I currently have over 67,000 miles on them! The have really been a great tire. I can’t believe the wear I’m getting out of them. They still measure over 5/32” at the thinnest spot I could find, and 1/4” elsewhere. I’m not a tire rotation nazi, but I do rotate them every 5-10k miles, usually closer to 5k when I change the oil. Here’s some observations for those who may be looking at these tires.

Noise

I’d say average or better than average for a mud tire. They do hum, but it’s a consistent hum, not the annoying wah-wah-wah you get with some mud tires. Doesn’t bother me at all, and I almost never have the radio on. Driving is my “quiet time.” My wife doesn’t love the hum, but she’s used to it.

Dry Handling

Good. Frankly, it’s a Land Cruiser. While I don’t drive like a little old lady, I don’t hit the VSC on a dry on ramp, either. The times I’ve had to push them, they were predictable, with good feedback and progressive roll- again, for a mud tire. They stay planted and grip without wallowing during quick “panic” stops.

Wet Handling

I’d say better than average for a mud tire. They are pretty secure feeling when the roads are slightly flooded due to the large channels between the blocks and siping. All tires will hydroplane, but with the weight of the LC and these tires I rarely need to slow down much in the rain.

Snow and Ice

I grew up in Michigan, so I’ve had plenty of driving time in winter conditions. These tires actually surprised me quite a bit in the Sierra winters. My past experience with mud tires has been less than stellar on ice and packed snow. These handle almost as well as any all terrain I’ve run in the past, but not as good as a dedicated winter tire. They’ve clawed through deep snow the few times I’ve gone through it, which was expected.

Rocks

Actually, nasty sharp rocks. These are everywhere around here, and the main reason I usually run such a heavy tire with deep tread blocks and heavy sidewalls. These babies have handled it all with ease. Chunking has been very minimal, more like “chipping” over the life of the tire. Much less chunking than the Cooper STT’s I had previously. I’ve never had a rock penetrate the tread or slash the sidewalls. I’ve only had 3 punctures total, and each was from some form of metal that would have punctured any tire (bolt, misc. steel piece, and a large screw). Even those times I had a puncture, I never got a “flat”. They held air enough for me to be able to top them up and make it home before making any repairs. One of the punctures was in Moab. I was able to finish the trip and drive all the way back to CA before pulling the tire.

Pressure

I usually run 35 psi on the road, and rarely air down off pavement. When I do I take them down to about 18-20 psi. When in Moab, we were pretty heavily loaded and the 20 psi we were running was too low. But, I was too lazy to air them up halfway down the trail. A couple of times I watched as the tire completely folded up over the outside of the rim when negotiating rocky trails. They never skipped a beat or burped air, but I think at least one of the tires suffered some internal damage. Now, when the tires are cold there is a pretty significant low frequency vibration until they warm up (5 min). My fault, not the tires. The only other thing to mention about air pressure is that they never leak air. Ever. I only check pressures when the temp changes drastically and before a long trip.

Wear

Incredible. As stated, they’re at 67k miles and going strong. I could easily get another 7-10k out of them if I wanted to run them to minimum depth. They actually would have done much better in the wear department, but due to an injury I’ve been dealing with I’ve been letting the tire shop rotate them. Even though I draw them a 5 tire rotation diagram, they rarely get it right. Amazing, I know :). One of the tires still has about 1/4” of tread. I know they skipped the spare or didn’t follow the diagram more than once.

Weight

Heavy.

Mileage

Crap. Nah, actually probably average for mud tires and some extra weight in the rig. I normally get 9-10 in the city/slow hills and 11-12 on the freeway at 75-80mph. Best mileage is in the mountains at 12-14 mpg.

Overall, I’ve been extremely happy with these tires. I’m struggling with the decision whether to replace them with the same or try something else. With 2 little ones in the family now the cruiser sees more family wagon duties than before, so perhaps a switch to an all-terrain wouldn’t be a bad idea. But, knowing the Trail Grapplers will easily go 70k is a pretty enticing proposition. For those of you looking for a trail tire, they are hard to beat. And they look good.


Cheers!

David

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I'm surprised to read this. I love the tire, but I went through 3 sets pretty quickly. I know a bunch of other folks who experienced the same. The compound is very soft, which makes it great for grip on rock, but also allows them to wear quickly. Like most mud tires, they're horrendous in snow. I still like them. They hold up really well to sharp rocks and I beat all of mine up pretty good and only lost one tire due to a sidewall puncture (it didn't fail on the trail, but slowly leaked).
 
Wow, that is surprising. I actually have never heard much about them either way (or really paid attention if I did). I would have been happy with 40k miles, like most mud tires, but the miles keep racking up! After reading your post I double checked my math. Yep, installed the tires at 93,053 miles and am now over 160,000. One thing I will say, is that I am pretty anal about alignment and until about a year ago had a sweet thing going with a local tire shop. I bought all of my stuff through them and they would give me an alignment for free whenever I wanted. So, I don't know how much of a difference it made, but the truck was aligned about every 6 months. I'm used to wearing out tires pretty quickly (at work it only takes about a week!), but these have really impressed me. After all of this praise for them, I think I might try the KO2's next time. They are 12.5 lbs lighter per tire in the 275/70-18 size, and may be more suitable to the DD duties the LC is seeing more of now. Any input on them?

Here are couple shots of how they look now. You'll see minor chipping here and there, but no major damage to the tread.

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I would say that those tires were toast a while ago. The siping across the lugs is pretty deep and you're way below that already. My tires actually had more tread depth than that when I swapped them out. Makes more sense now.
 
Yes, it's a little different out here. We won't see a drop of moisture from spring to late fall. While I would't take these tires on an off-road "trip" or in the rain/snow, they are perfectly serviceable for taking the kiddos to swim class or the occasional trail, which I do all the time. I've actually been a bit hard on them lately just because I know they're on their way out... You know, NOT driving around that sharp rock mid trail, etc.
 
Just ordered a set of the KO2's. The lighter weight might give me a few more miles on the latest steering rack. And frankly, I just like trying something new. I took a hard look at the STT Pro's you guys reviewed, but frankly my last set of STT's chunked quite a bit. I know they're not the same tire, but that in addition to the other benefits of an AT tire made the decision for me. I actually did a favor for a customer and drove his Jeep to get the MT's swapped for the new KO2's while I had it. The drive home was much quieter- in his Jeep, anyways.
 
Interesting report- thanks for posting.

Thinking about other tire options and second guessing my selection does come to mind from time to time. I run the KO2s and while I have zero complaints, I wouldn't mind a little fatter profile to fill the wheel well compared to my 285/70-18s purely for aesthetic reasons.

6000 miles in, the K02 is really very good: Its quiet, capable, durable, balances very well and rolls smoothly at HWY speeds, does everything I expect it to, at a great price. 5 x 275/70-18 K02 cost me under $950 for the rubber ( before tax & install & replacement warranties). Only downside is there are limited profile options in the 18" tires.

Another tire to consider is the Toyo RT. Palflyer posted up a nice review on the new Toyo RT recently, which I might consider next time around if I wanted a little larger profile. But those are spendy.
 
Interesting report- thanks for posting.

Thinking about other tire options and second guessing my selection does come to mind from time to time. I run the KO2s and while I have zero complaints, I wouldn't mind a little fatter profile to fill the wheel well compared to my 285/70-18s purely for aesthetic reasons.

6000 miles in, the K02 is really very good: Its quiet, capable, durable, balances very well and rolls smoothly at HWY speeds, does everything I expect it to, at a great price. 5 x 275/70-18 K02 cost me under $950 for the rubber ( before tax & install & replacement warranties). Only downside is there are limited profile options in the 18" tires.

Another tire to consider is the Toyo RT. Palflyer posted up a nice review on the new Toyo RT recently, which I might consider next time around if I wanted a little larger profile. But those are spendy.

I'm happy to hear you like the KO2's. I also went with the 275/70-18's. A touch narrower but taller than the Trails I have now. Another deciding factor was that I'm designing/building a custom camper trailer (similar to an Adrenalin) for family trips. I'd like the tires on the trailer to be the same as on the rig for obvious reasons. And running the lightest tires possible on a trailer is the way to go. $950 is a great price! I'm paying more than that, but using a shop I trust and that backs up their work is worth it. And everything is so $$$ out here anyways!
 
I doubt you'll be disappointed. Post up a review in 50,000 miles and let us know how they held up- :cheers:
 
I have TerraGrapplers that I love. I am in more your projected situation. Mostly work commute and smother two tracks off road. Done some mild rack crawling and lots of steep two tracks with fist sized rocks. They have 30,000 miles on them and have plenty more to go. My buddy got just over 60,000 on his that were on a Nissan 2wd Titan.
 
Got the KO2's on today. First impressions - good. Definitely quiet, as in they sound like a highway tire. Don't fill out the wheel well nearly as good as the 285's. They look a bit dopey, but that's ok. I'm getting old enough to not really care. I need to sort out pressures, because they feel a bit splashy at 35 psi. What are you guys running? I'll probably do the chalk test unless there's been a pretty good consensus.
 
Yeah the profile is a bit narrow. But the upside is it actually provides better grip on the rocky terrain.

I've got some 1.25" spacers on order, we'll see how that looks with them pushed a little further out.

I'm running 40 psi all around.

What's the chalk test?
 
Well, it's validity is debated, but I think it gets you in the ballpark. You use some sidewalk (or other) chalk to mark some lines across the tread. Drive slowly for a short distance on a level surface. If the tire is overinflated, the chalk will wear off faster in the center, and vice-versa. Adjust your pressure to get even wear. This will give you your warm pressure. I usually subtract about 4 psi for cold pressure.

Which spacers did you go with?
 
BORA spacers-

Friend who owns a rover repair shop here uses BORA on their builds- thought I would give them a try. Product seems to have a good reputation and the price was right.

Edit 8-2-16: Received the Bora spacers last week and installed. Really nice product Made to order in USA, T-6 alum, Grade 10.9 lugs etc. Hubcentric & wheel centric so no issues with getting a proper wheel mount. Pushes the 18" K02's out towards the wheel well nicely, truck handles a little better: a little tighter steering, little less body roll. Smooth & no vibes.
 
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Not to be the math geek, but if you're rotating the spare through, you should decrease your mileage estimate by 20℅, since no single tire saw the full 67,000 miles rather only 80℅ of that, especially since you were rotating close to every 5K.
 
Just curious what are you guys that are running 275/70/18 KO2's using for tire pressure.
I just put a set of KO2's in 285/65/18 on my 100.

So far I'm using 42 psi all around for street duty. The KO2's are definitely softer than the trail grapplers.

Not to be the math geek, but if you're rotating the spare through, you should decrease your mileage estimate by 20℅, since no single tire saw the full 67,000 miles rather only 80℅ of that, especially since you were rotating close to every 5K.

Yup, that's why I specified that I was rotating the spare through. Still, 53k for 4 is pretty good in my book. Time will tell, but my gut tells me the KO2's won't last nearly that long. I do like the smoothness and quietness of them, but they sure do feel like a much softer compound. Hopefully the increased surface area will make up for that.
 
I'm only at about 12k miles but I'm loving these tires. Took a 1,000 mile trip this past weekend and on some highway roads you could barely hear the tire roaring (maybe I'm getting used to it).

 
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