275/70/17 tires??

Looks like all the 275 tires are the LT ones with 10 ply. Has anyone run these on their rig? Am guessing a lot rougher ride, but can they be aired down to soften the ride without impacting drive quality/safety. Curious what everyone's thoughts and experiences have been? Is anyone aware of a 275 that isn't the heavier duty 10 ply?

 

I was looking at this size at one point, but was persuaded to avoid it due to being an E load tire only (local to me, Toronto). One of the guys has them on his 4Runner and regrets them due to the harsh ride. Now that I have lifted, I’m going back and forth between 255/80 (also only in E load) and 285/70 (in C load). I prefer the daily use benefits of the 255/80, but still a bit worried about harshness of an E load.

 

275s are all super heavy and a good bit more expensive than their 265 equivalents, I looked into it briefly and decided the juice wasn't worth the squeeze.

Lots of drawbacks for a tire barely larger than stock.

 

I used 275/70R17 BFG KO2 Load E. Since it was firm on pavement I ran 32psi. At relatively higher speeds I could feel the firmness. As for "heavier duty" at least BFG KO2 will hold the heavier duty status with 3ply sidewall and 10ply rated main tread.

Weight also very interesting in this size of 275/70R17 as I notice common Load E tires have less weight than Load C

 

I have the 275 KO2s on my rig. 20K miles in and I've rotated them every 5K miles. I'm very happy with them. Yes they are E rated and I was expecting a much harsher ride but have no regrets. I came from a Grand Cherokee which is much more of a car ride compared to the 4runner. I think that is part of why I've been OK with the KO2s. I knew I was moving to more of a truck ride. I've never had any other tires on my 4runner so it's totally possible that a softer tire would give a better ride but at this point I'm happy with the KO2s and they work great in the So Cal and Baja desert which is where I spend my time.

 

I have 275 KO2s and can’t wait for them to wear out so that I can replace them (hopefully only a year left). I run them at the suggested (the tire size site) 42, because when I ran them lower, I got a lot more vibration.

At first, they were only a little louder, and rougher, and of course since they’re heavy, they’ve never been able to balance out the wobble from 56-61 mph.

45k miles in and they’re a lot louder, and a bit rougher, and don’t like to grip in wet at all anymore (and even dry sometimes, I think they’re already getting harder).

But I’ve never been afraid of damaging a tire. It’s been a real luxury to be able to air down off-road and have no anxieties over losing a tire. I only recently added a full-size spare as the tires are aging and I didn’t want to keep risking it without.

 

I literally just installed 275s Toyo AT3s and I absolutely LOVE THEM. No noise, vibration or pull. Mine are 6 ply and I inflate them to 38 psi

 

Sorry if I missed, but where did you find 6ply rated Toyo 275/70R17> When I search its 10ply rated load E with whopping load capacity of 124. Love the speed rating on them as well.

 

I ran 275/70r17 KO2's in Load Range E for a while, and IMO they weren't worth it. Very harsh, refused to balance and could feel everything on the road when properly inflated. I hated how they made the truck feel. I tried running them at a lower PSI and steering felt terrible plus the MPG's took a big hit.

In the end, I had BFG replace them with 285's in Load Range C....While I still have a balancing issue, the ride is much more comfortable, and my MPG's improved just under 1-MPG (more like .8 hand calculated). I personally feel that Load Range E tires are overkill for this platform, unless you're truly rock crawling a purpose-built rig. I've put the Load C tires through their paces on all sorts of surfaces in SoCal trails, and haven't had any issues.

 

I didn't say it's a sizing issue. It's fairly common to hear of people having trouble balancing KO2's, but it's also not limited to that specific tire when it comes to the 4Runner platform.

 

Thank you... any concerns with airing down load C tires with their thinner sidewalls? If so, what do you air down to for typical off road trails (potholes, washboard... 30/40mph)?

 

That's a bit of an overstatement. I know a number of people using KO2's. They're still a pretty good all around tire, and have great tread wear.

Also, if you can't get them balanced, you either got a dud set, or need to use a better shop.

 

Well, I bought mine in February 2019, and put 29K miles on them by April of '20. Tread was at 80%, and they're still on a friend's Ranger right now.

Yes, they're not the best tires available anymore. But, they still work fine. Most of the people I know who have them have bought them in the last few years.

 

Yep. I'm a fan of KO2. I always use them on stock SR5 wheels and TRD ORP wheels. Road force balance done at discount tire worked perfect for me. Ive used them in sizes 265/70R17 Load C, 275/70R17 Load E and 285/70R17 Load C.

 

275/70 load c falken wildpeaks are a thing

 

Yes, but a heavy thing. 57 lbs.

 

Yep, 58lbs per my post #5.

 

I feel like a P rated 275/70R17 would sell well because they are a great size for 4Runner and Tacoma that will usually fit without CMC(can mount chop). But I stick with 265/70R17 now days because I don’t want a super heavy tire just to get slightly bigger. My last vehicle has P rated 285’s that were a good bit lighter than any 275’s but I had to do a CMC.

 

I had the Falken 275s in C Load. I loved the way the truck looked with them but.... Waaaay too heavy. Just replaced them with 285 C load KO2s at 51 lbs each. Saved 7 lbs per tire and upsized. Crazy.

 

That's my point with this size. I think the same tire in 265 is 48lbs. Big jump in weight for what, .5" extra height and width?

 

285's can usually be cleared without a BMC. It's tight though.

 

A lot of folks run C load and air down without issue, but this is also about how heavy your rig is and how low you air down. For the folks I know that don’t run bead lock rims, they don’t go below 18 psi, with most applications off road running at 20 psi.

 

Imo I wouldn't go 275 70 17. Instead go 255 75 17. Same height as a 275 70 but less width and 255 75 have p rated and c rated options.

 

I like this idea.

I have 275 KO2s and recently bought a used 255/75 for $25 to use as my “full-size spare” until I can save up for my wheels/tires/suspension.

 

I had pizza-cutters (255/75R17s) on my 16 Trail. The 255s definitely provide a more imposing stance than stock.

This thread caught my attention 'cause I'm trying to decide between 275s and 255s for my next 5th gen. Yeah, I don't want to get E-rated tires and not planning on a lift/spacers so I'll probably install 255s again.

 

I haven't had any issues with them...Lowest I've aired down to from memory is 15PSI. I did Lytle Creek in SoCal, which is known to be a fairly rocky trail, at 20PSI and no issues. I normally don't go below 20-22PSI. Looking at my sidewalls you can clearly see where some parts have rubbed or come into contact with hard objects on the trail, but the sidewall is not compromised or damaged in any way. I still carry a full-size spare and tools to swap on the trail, in the event of an emergency. This past weekend I did a couple trails in Hungry Valley, CA and didn't even bother to air down.

I'm not overly concerned about the sidewalls on the type of trails I personally drive through, and that's mainly because I've seen what stock Jeep Rubicons do off road, and those come from the factory with Load C KO2's (in both 33" and 35" packages). I drive carefully on all trails, always keeping an eye out for sharp rocks or objects that could cause tire failure, but I also don't let it hold me back from tackling moderately difficult terrain.

A lot of this boils down to how you use your truck, what type of trails you plan to drive, and what type of driver you are.