The Most Difficult Tire To Create - All Terrain 

The more you understand the abuse tires are designed to deal with, the more amazing it is how they work as well and as long as they do.

As a former tire tech/salesman who tried really hard to learn the actual science behind tires so I could get people the right tire better, I /really/ wish you were making these videos 10 years ago. Still, love to see it now, lots of cool info.

A like how your sponsors actually provide content and information that adds to our understanding of the science behind their products. Great job Jason! Looking forward to more

Actually it's good to air down in basically all offroad scenarios. Not only does it give you more grip in things like rocks but it DRASTICALLY softens the ride on uneven terrain.

Not the type of comment typically left here, but after an exhausting and challenging week (currently dealing with ADHD/autism burnout), waking up to find a new EE video just... really calms my brain down 🥲 Thanks, Jason. I really hope to meet you someday and thank you in person for all the joy and knowledge you've brought me

Now I really want to see @TyreReviews make a test in an offroad vehicle comparing every type of tire (summer, winter, all terrain, etc.) in all conditions. I'm really interested in the differences in performance between all these types

Have been using Hankook AT2s for a while now. Have found them to be a very good all rounder, with excellent on road performance, and adequate off road ability. Comfort on and off road is exceptional I have found.

Being a long time off roader, we also air down our tires in rock so as to make them less likely to be punctured. Airing down also makes the ride more comfortable on washboards as it helps with the absorption of bumps that vibrate the vehicle terribly. Really, anytime we go off-roading we air down.

Thank you - you have answered some long term questions that I have about tires. Growing up on logging roads in Oregon we used lots of offroad tires, but at 71yrs we use AT tires for our 3/4ton PU & 4Runner. This video is very helpful as we prepare to buy new tires for our 4Runner. Thank you again!

As someone who lives the off-road side of the Auto & motorcycle industry, I love the videos you do related to these segments ! Always very well done man. Topic for a future video? : off-road long travel suspension on production vehicles !

I love you’re content so much. You so clearly and simply explain concepts regardless of how complicated they are. I feel that a good way to gauge how well someone understands a concept is how simply they can explain it to someone else.

Tyres are quite the field of acoustics, performance, and efficiency! Thanks for shining another light :)

Awesome video about tires. Exemplifies why people like engineers love them - they are all about creative problem solving, with no possible perfection, only the ability to cleverly and creatively approach perfection. A playground for engineers and for hermenueticists! Thank you!

I don’t have an off-road vehicle, but I’ve got Hankook’s Kinergy GT tires in my Celica. They’re fantastic in the snow and last forever and the second set I’ve used.

The redesigned Chevy Equinox has an Activ trim with General Grabber tires and I'm thinking I might buy one, but knowing nothing about all terraine tires, this video is an excellent tutorial for me. This also applies to all of your videos that explain the technical details for us typical drivers. Great job.

I have the standard AT2's on my 16 Explorer and love them. Kudos to Hankook for making a great ATT

BFG factory employee here. The customer expectations for NVH (Noise, Vibration, and Handling) for AT tires has increased exponentially in recent years. The KO2 was tweaked to improve it over the years, but needed a design step change for KO3 deployment. The company launched the Trail Terrain line to provide a more road-friendly option for consumers who honestly only want occasional/mild off-road use. Edit: almost forgot. OEM’s HAVE to improve fuel economy. It is FAR easier to get 1-2% less rolling resistance than increase ICE efficiency or vehicle aero by the same amount. This is why silica tread compounds have been proliferated (but are a nightmare to mix/extrude).

I bought these at2 xtremes for my f250 and honestly they are a phenomenal all around tire. They are quiet on road, have good wet weather grip, and do good off gravel roads. It was awesome for Jason to use them in this video as there actually isnt that much out there about them. I always like to appreciate the engineering in tires. Really surprising more people don't consider them as these hankooks beat a lot of all terrains in terms of longevity and efficiency, and are more than servicable in light off roading

You are kinda on kick about tires right now. May I suggest you go and talk to O'Neil racing or DirtFish about the unique needs of rally tires. You think all-terrains have a tough job.

Nicely done and quite informative. It would be nice to "go behind the scenes" so-to-speak to see how tires are developed in the lab as well as how they are actually manufactured.

I would love to see a deep dive like this into top of the range racing slicks! Like F1 tyres, perhaps. What are their rolling resistance and noise profile like? This was fascinating

Tires are incredibly cool! I look forward to more videos like this one. Thanks for the excellent content!

The noise reduction by different sized blocks doesn't reduce total noise, but spreads it out spectrally. Think 5 pianos with the C key being hit on all 5, V. 5 different notes being hit. Same total noise - just in different spectral "buckets" so less intense at any given bucket and so less annoying.

I've had my hankook dynopro at2 lt for 50,000k.. nearly 4 years. Awesome tyre

The Firestone Destination A/T2 is a very good jack of all trades tire. Consistently in the top 3 of most dry/wet/snow, on and off road tests.

From the years of your amazing videos, this may be one of the one of the most informative. Thank you so much.

Thanks for explaining the reasons for various tire design features.

I had Hankook Dynapro ATM on my 1999 Jeep Grand Cherokee and loved them.

I live in Southern California and off-road all most daily. It’s a half mile to my house on dirt. My wife and I run fire roads constantly and my favorite longest lasting tire that takes the most abuse has been the toyo open country at 3.

This is so interesting. I am never tired of learning about cars from you! Thank you 😊

That was the Best description of tire features I have ever heard. Thank you!

I've owned the Hankook Dynapro ATM RF10(predecessor to these) for the past 4 years on my truck and I absolutely love them, they're amazing in any and all conditions and a really smooth ride.

I have these on my 4runner. So far I'm liking them.

As someone studying mechanical engineering, you're an inspiration of how we shouldn't be engineers for that paycheck but be able to explain to people who get ripped off by these business just because they can't understand the science behind. This is really educational.

I remember reading an article about rubber compounds having about 20C of optimal operational range. +10 - +30C for summer tires. -10 - +10C for studded winter tires. -20 - 0C for studless winter tires. Temperatures bellow optimal means the tire get to stiff with more slippage as a result, and above means to soft with higher wear. How do do all terrain tires handle this problem?

That BRONCO looks so SICK. 🤩

Great job explaining the tire design trade-offs. I learned a lot. Thank you

That is a great video on tyres Jason. Most informative. They work well in Australia too.

Simple, sweet, informative, loved the video, I’ve been running hankook atms on my old Toyota been looking at some at extremes for my new ford!

An excellent explanation ! Concise and easy to understand . I hope to see one on how the new All Weather tires compare to the All season tires 🤓

I've only ran All-Terrain tires on my truck since I bought it since it sees a little bit of both on and off-road driving. I will say that even some of the more affordable options fit the intended role of such type of tire very well. The tires I currently have on my truck are the General Grabber A/Tx. The tread pattern is very similar to the BF Goodrich KO series, but actually has more sipes per tread. On-road, the impact on fuel economy hasn't been very noticeable, particularly with highway driving. As for noise, I have not noticed any excessive noise from the tires (granted, my truck's exhaust setup is very loud, so the difference between this A/T vs a highway tire is likely maske by the exhaust). Off-road, they've performed very well, even in mud. My buddy, who goes off-roading more regularly than I do and recommended the Generals to me, reported that they handled snow exceptionally when he had to drive home from one of his adventures in a snowstorm. In fact, he actually prefers the General A/Tx over the Bf Goodrich. All of that being said, it's not surprising how much thought has to be put into the design process of this type of tire.

Outstanding video !! Thank you !!

I watched another video that showed tire deformation over small rocks. The less wide tires seemed to deform more than wide tires. I bought a diesel truck 09 gmc two years ago that came with new mud terrain tires and 18” non stock rims. They where very loud and the cabin noise and vibrations where horrible. I swapped them out before they needed to be replaced because it was very uncomfortable with vibrations and noise. I got new rims and tires. 16” rims the smallest rim that fits and 33” tires that are 9” wide. Toyo ATs. My family enjoys riding in the truck now. It’s quite and the vibrations are all gone. These tires at 60psi deform and the tire soaks up little bumps. Night and day between 18” rims with muds and 16” rim with ATs. With the new set up there is a bulge where the tire meets the road adding to the tire deforming and complying. So nice. It changed the whole experience. I barely drive it. It’s just used to tow a boat or truck needed trips.

Great video. I just bought a truck with these tires installed on it. Great looking tire. Hope they perform just as well.

Kenda Klever R/T! Done and done ‼️Best truck tire I ever rode on. Love the on road ride and drive, off road traction would be impressive for a mud tire much less a hybrid like this. 3 peak rated too.

Tire videos are always appreciated!

I love Hankook. i am running Dynapro XT. (Hybrid / Rugged)

Great video. Thanks. My tyre choice is yokohama geolander AT G015. The hankook in this video is very similar and would offer all the same noise ride and grip qualities.

tie blocks! learned something today!!

I'd argue that tire noise is not so much related to air pumping but more to tire/compound rigidity. On tire contact with the road during rolling, the surface of the tire comes into contact aggressively with the asphalt which generates vibration and mechanical stress. When the compound is hard, it won't absorb that stress and attenuate it but rather will distribute the vibration along the surface of the tire and further will be transmitted into the air surrounding the tire and finally will reach the ear. On the other hand, when a soft compound tire comes into contact with the asphalt, the mechanical stress and vibrations generated by the impact will be absorbed by the soft compound and the amount of remaining vibration which will be transmitted into the air around will be much less, resulting in less noise. What I say is that you can have identical tires when it comes to tread but different compounds and the noise they make would be very different. This can be best tested in void having a microphone inside the tire. The harder tire will generate higher noise inside the tire even though outside the tire is no air: just void.

Thank you Jason, another excellent video.

My favorite. I have these on my Colorado now and had them on my F150 previously.

We a JLU Willy’s Wrangler that came with the Firestone mud terrains and they look cool but they are definitely really bad in the rain, and the steering response issue you mentioned with the big blocks also translates into weird dry braking performance.

One additional thing is that these tires are also rated and tested for high speed performance. All terrain tires would be at most H rated tires which means must be able to sustain speeds of up to 130mph or 210kmh. This adds another layer of complexity in balancing off road and on road performance. Great video 👍🏼

Great vid! Thank you!

Thank you for enlightment! 👌

Amazing video and topic!!

Very much enjoyed this. The Trailblazer needs new tires before winter.... these are now at the top of the list to research...very good presentation. Just to mention tires are a fascinating subject and way to overlooked from bicycles to semi tractor and trailer rigs. Thanks again.

Thanks for your contents

I didn't know anything about tires going into this video, but this is cool to know. Thank you.

Thanks 4 all the great information. I am going to buy new tires 4 my Tacoma soon. This video is a lot of help. 👍🖖💪

I got a set if these several months ago on my 07 4Runner. I love this tire so far. AND it was one if the cheapest options. I am very impressed so far.

I live in rural Western Australia, and it's awesome to hear about the engineering that goes into the tires that pretty much everyone religiously gets for their cars.

Weirdly I noted a VW golf in my works car park had a snow tyre on it and it's 25°c outside right now. Then this video popped up 😅

Solid video as always! Care to explain weight distributing trailer hitches next?

Great subject matter as always. Nice job on this one.

I love tire tech videos!

That tire and wheel combo looks good on the Bronco

awesome knowledge right here!!!!!!!

Just in time for getting some new tires in my truck!

I find this oddly fascinating. Thanks for the info!

All terrain tires specifically those that are three-peak snow rated are my favorite tire for all of my vehicles. Goodyear Wranglers or if I need a smaller tire then Yokohama Geolander G015's either tire is great for basically any vehicle type dispite what conventional wisdom may say.

amazing video 👍

Just bought these xtremes, pretty happy with them on my RAM 1500.

Yay! Love your tire videos!

Great information!

Fascinating.

Great video!

Great video idea jason

Great Info..

Tires have come so far in my lifetime. I remember going on family vacations 60 years ago and there were almost always tire failures. It probably didn't help that my dad packed the station wagon to the gills, put 2 or 3 canoes on the roof, a boat and trailer out back and drove like a bat out of hell. Anyway, my relevant comment is I have had several All Terrain tires that were remarkably quiet. The Pirelli Scorpion tires on my RAM 1500 are basically inaudible. Now there is a fair amount of wind noise but that's typical for the vehicles that use All Terrain tires.

I love all terrain tires. We have a set of Falken Wildpeak AT3W on our jeep and they're awesome.

The difficulty becomes apparent for those that have ran several diiferent A/T's as the best are truly impressive [as all-arounders] while the worst have several dramatic flaws like short tread life, loud like M/T's, not being decent on OR off-road, bad in snow/ice, and so on. Very happy with my Falken Wildpeak AT3/W on 18 Ram 1500. I have the P's and not LT which were cheaper, lighter, softer riding, and just more practical for my usage as a daily driver, mostly unloaded and infrequent towing but plenty off-road occasions.

Got an mv6 ex poolice car. It's buggered, but I've a doner engine to collect.... looking forward to the omega project. They are awesome cars😊

Michelin does this significantly better than any other manufacturer with the LTX A/T2. They are not even in the same league as what Hankook has to offer. They also have the same warranty and I get 85,000 miles out of a set.

Looks like I want at2 extremes now. Maxxis razar AT’s are all the rage here in Australia at the moment, good tire bad wear.

I got an f350 and aftermarket tires rims and it wears in such a way that when driven slow it actually cuts into the ground they call it cupping but feel it it's sharp

You could also elaborate on how the tread blocks can “lock” to create extra stiffness in certain motions.

I am a mechanical engineer and am still amazed at tire technology.

Tires are way too interesting lol. Great vid, thank you!

I don't wanna sound like some zealot to a corporation, but co-incidentally last month I bought some hankook's for my sleeper mini, my first ever set from this brand, and so far I can confidently say they are some of the best tyres I've ever used. Very progressive, tons of lateral grip but with great feedback, it feels intuitive to judge the limit. what's more they are surprisingly comfortable which I wasn't expecting.

Haha I knew I recognized that pattern. I'm running Hankook AT right now.

0:53 I have the Hankook 4s2 and they are a wonder. Always safe and predictable.

There are also small 2/32" protrusions embossed from the bottom of the grooves, these are called rock ejectors and they also help throw any stones out!

One point on efficiency not mentioned in the video: RANGE! If you are really going exploring gas stations can be few and far between and carrying extra gas is not exactly easy (plus adds weight to the rig) so an extra 15% MPG is huge.

I always wondered why tires had those squiggly lines (sipes). Now I know they are for snow traction. But being in South Florida, I guess I can't take advantage of them. 😁

Tires are the #1 vehicle upgrade 👌

insane tire!!!!

In Poland we use to say: "If it's good for everything, it's good for nothing" You can't have everything. If you have good offroad traction, you won't get quiet and low rolling resistance on asphalt.

These look like the perfect tire. For my Corolla. 😀