06-17-2021, 06:01 PM
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#31
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Quote:
Originally Posted by Pedro367
It really does just boil down to buying the correct load. An E is never going to be ideal on a 4runner. But, with certain sizes you are sometimes out of luck if you want a certain tire. The good thing is that the tire market is coming around on that thanks to the enthusiast market demand and also OEs building more specialty vehicles (Raptor, Rubicons, etc.) forcing companies like BFG to build C load tires in popular sizes like 285/70 and 315/70.
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Raptor size 315/70R17 is available in both C and E.
Problem is fitting a 34” to your 4Runner!
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06-18-2021, 08:40 AM
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#32
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Join Date: Oct 2020
Location: Denville, NJ
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Quote:
Originally Posted by 2021nightshade4x4
Raptor size 315/70R17 is available in both C and E.
Problem is fitting a 34” to your 4Runner!
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Right. There wasn't really a C load 315/70r17 until these. Even the previous Raptors were D. They are more popular for the Wrangler crowd as they are all 17" wheels now too. Was just using them as an example of a popular enthusiast size.
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06-18-2021, 09:33 AM
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#33
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Join Date: Feb 2021
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Quote:
Originally Posted by MAST4R
As for Cooper, their AT is a light duty tire and I know forum members who have had many punctures offroad both commercially and recreationally with those on trucks and Subarus alike. They do have a great rep for on road driving though.
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Are you only talking about the 4S/P metric or the AT3 LT as well? If the AT3 LT, is this right? Honest question, I'm looking at getting new tires and my research had me leaning toward the LT in C. Everything I've read/heard is that while not as completely rock-crawling capable as K02s, still pretty reliable off-road with no puncture issues. The TOYO geo AT IIIs seem to me to have the rep for puncture and sidewall issues, even in E loads. Would appreciate it if you could relate some examples, as it would really help in deciding.
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06-18-2021, 10:05 AM
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#34
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I have Cooper ATX's. They are good on the road, have been ok in the rain. They are great in fresh or dry snow, but terrible in packed or wet snow and straight up dangerous on ice. They were great offroad in Moab. Even when I was high centered on a rock and spinning them against sharp rocks, no issues. They are kinda noisy, but I don't mind because I'm always driving alone with music on.
however, I got a flat on a dirt road in Idaho after about 8k miles. sidewall cut. I dunno how because the road isn't even rocky. and these are the E-rated ones. irritating.
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06-18-2021, 10:12 AM
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#35
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Quote:
Originally Posted by Pedro367
Right. There wasn't really a C load 315/70r17 until these. Even the previous Raptors were D. They are more popular for the Wrangler crowd as they are all 17" wheels now too. Was just using them as an example of a popular enthusiast size.
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I did not know about the D! Seems to be a good middle ground for some full size truck owners that are heavy but not quite a 3/4 ton truck.
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06-18-2021, 11:35 AM
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#36
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Join Date: Jan 2019
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Quote:
Originally Posted by somenoise
Are you only talking about the 4S/P metric or the AT3 LT as well? If the AT3 LT, is this right? Honest question, I'm looking at getting new tires and my research had me leaning toward the LT in C. Everything I've read/heard is that while not as completely rock-crawling capable as K02s, still pretty reliable off-road with no puncture issues. The TOYO geo AT IIIs seem to me to have the rep for puncture and sidewall issues, even in E loads. Would appreciate it if you could relate some examples, as it would really help in deciding.
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Cooper has been changing their AT 3 design a lot. But it is fundamentally a light duty setup.
Consider Cooper's own words, this is their own video for Australia. My current tires are a premium version of the ST Maxx they run in the test. As you can see, the St Maxx is in a different league from the AT3. The KO2 competes with the St Maxx.
https://www.youtube.com/watch?v=9Kz8mmLkeks
At rock crawling pressures, the AT3 is much closer to a normal tire than to the St MAXX. There is no comparison at all.
At my usual 20 psi for rocks, my tires are 2.5X better than the AT3. It would be similar with KO2 for this test. For real world, where sidewall also plays, the LTC Ko2 would not be as strong as LTD/LTE KO2 or ST MAXX.
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2018 TRD OP non-kdss, well armored, well used
(6112s/650lb at 2.25" lift, 8100 rear with Bilstein B12 1.5" springs, Mickey Thompson ATZ P3 LTE 265 70 17, RCI set of front 3/16 skids, Shrockworks step sliders and 3/16 steel gas tank skid, C4Fab rear diff skid, Rockmen rear LCAs, Total Chaos rear LCA bracket skids, Diode Dynamics SS3 white fog lights).
Last edited by MAST4R; 06-18-2021 at 11:37 AM.
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06-18-2021, 04:11 PM
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#37
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Quote:
Originally Posted by MAST4R
Cooper has been changing their AT 3 design a lot. But it is fundamentally a light duty setup.
Consider Cooper's own words, this is their own video for Australia. My current tires are a premium version of the ST Maxx they run in the test. As you can see, the St Maxx is in a different league from the AT3. The KO2 competes with the St Maxx.
https://www.youtube.com/watch?v=9Kz8mmLkeks
At rock crawling pressures, the AT3 is much closer to a normal tire than to the St MAXX. There is no comparison at all.
At my usual 20 psi for rocks, my tires are 2.5X better than the AT3. It would be similar with KO2 for this test. For real world, where sidewall also plays, the LTC Ko2 would not be as strong as LTD/LTE KO2 or ST MAXX.
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Yea, I know they aren't for rock crawling but that's not what I'd be getting them for, I'm more concerned about sidewall punctures in moderate speed trails with lots of smaller sharper rocks, like some of the longer death valley trails. I've read/seen AT3s do fine with no punctures in those conditions, but was wondering if there were examples of this not working out, since i haven't really come across them in my searches.
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06-18-2021, 04:26 PM
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#38
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Quote:
Originally Posted by somenoise
Yea, I know they aren't for rock crawling but that's not what I'd be getting them for, I'm more concerned about sidewall punctures in moderate speed trails with lots of smaller sharper rocks, like some of the longer death valley trails. I've read/seen AT3s do fine with no punctures in those conditions, but was wondering if there were examples of this not working out, since i haven't really come across them in my searches.
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Big rock crawling is completely different, people get flats there for other reasons.
The test on the video shows precisely what you are likely to encounter in terms of performance, not nails obviously.
If you want AT3 for Death Valley make sure you have a matching spare and think carefully about pressures. Lower tire pressures help with punctures through the tread as on the video but they expose more of the sidewall.
The people I mentioned earlier are a guy in OZ whose company he says gets AT 3 flats all the time offroad while the trucks on KO2 do not and the other one is in the eastern US who got several AT punctures on an Outback.
I would personally not rely on AT3 in Death Valley. At least look into the top lighter duty AT such as the new Toyo AT III. I have never heard people complaining of punctures with AT II or III and I personally had II in the past.
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2018 TRD OP non-kdss, well armored, well used
(6112s/650lb at 2.25" lift, 8100 rear with Bilstein B12 1.5" springs, Mickey Thompson ATZ P3 LTE 265 70 17, RCI set of front 3/16 skids, Shrockworks step sliders and 3/16 steel gas tank skid, C4Fab rear diff skid, Rockmen rear LCAs, Total Chaos rear LCA bracket skids, Diode Dynamics SS3 white fog lights).
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06-18-2021, 04:41 PM
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#39
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Join Date: Feb 2021
Location: bay area
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Quote:
Originally Posted by MAST4R
Big rock crawling is completely different, people get flats there for other reasons.
The test on the video shows precisely what you are likely to encounter in terms of performance, not nails obviously.
If you want AT3 for Death Valley make sure you have a matching spare and think carefully about pressures. Lower tire pressures help with punctures through the tread as on the video but they expose more of the sidewall.
The people I mentioned earlier are a guy in OZ whose company he says gets AT 3 flats all the time offroad while the trucks on KO2 do not and the other one is in the eastern US who got several AT punctures on an Outback.
I would personally not rely on AT3 in Death Valley. At least look into the top lighter duty AT such as the new Toyo AT III. I have never heard people complaining of punctures with AT II or III and I personally had II in the past.
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Thanks, that's good to know. I also was considering Toyo AT III, but there are a few people on this board who had sidewall punctures on them with E load. Don't know if those are outliers but looks like K02s seem better than either that or the Cooper at3s. I'm not specifically doing death valley all the time, that just the kind of terrain I had in mind when thinking of where i want my tires' upper tolerances at.
I'm probably overthinking it, back in the day i had goodyear wranglers on my xj and did all sorts of trails and never a puncture or concern about on road performance. I'm assuming a 5th gen 4r with any of these tires is going to be loads better, haha.
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06-26-2021, 02:51 AM
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#40
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Join Date: Mar 2019
Location: San Francisco Bay Area
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I decided to get the BFG KO2. Already put 3,000 miles on them. I wasn’t disappointed. I got the car up to 80mph on the HWY and the tires were smooth and quiet. Also did a little off-roading as well and the tires handled very nicely. No complaints at all. Very pleased with their performance so far.
Thanks for the info everyone!
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