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Old 07-01-2021, 04:05 AM #1
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Toyo Open Country AT3 265/75/R16

Time for new tires for my 2007 SR5 4WD. Because this vehicle is my daily driver with 75%+ of the driving being on the highway, it was important to me to get a tire with good fuel economy. However, I am an also an avid camper with hundreds of nights spent in the great outdoors. While the vast majority has been with a 40L backpack, I'm not getting any younger and the speed and ease of vehicle-based camping the overlanding community promotes has caught my eye. This meant finding a tire with good road manners that could also provide reasonable offroad performance. So I began researching All Terrain tires with the following goals:
  • Long life (my current winner is the set of Michelin LTX tires I ran 105,000 miles).
  • Largest size possible on a stock suspension to increase ground clearance while saving money for other mods.
  • Light weight to minimize fuel economy and engine performance losses from sizing up.
  • True all-weather performance to improve safety in unexpected adverse conditions I've found myself in on occasion.
  • Keep the stock wheel to again save money for other mods. I also prefer the larger sidewall the 16-inch size allows.

After considering all my choices, I decided on the Toyo Open Country AT3 265/75/R16 in Standard Load. As I'm not planning to do any aggressive off-roading or heavy towing, avoiding the E Load tire saves me 9 pounds per tire.

This is a 31.6" tire vs. the stock 30.6" tire, meaning I'd gain half an inch of ground clearance. I never could determine with absolute certainty from previous threads if this size is supposed to fit with no lift or if it should have a 1/0 lift. But I can say that on my bone-stock suspension I have no rubbing lock to lock and appear to have plenty of travel clearance - though I have yet to put the suspension through it's maximum flex. The stock mud guards don't interfere. Because I also replaced the spare, I can also say this size fits in the tire carrier space below with no problem whatsoever.

Here are some pics:




Front wheel well with stock Toyota rake:




Back wheel well:



Spare Tire:



In the Standard Load rating I chose, these tires have a 65,000 warranty and have a three peak snowflake rating. I do like the rather aggressive sidewall appearance. I'm going to be adding a roof rack and might as well have some fun owning the look I'm going to end up having.

I'll note that these are white outline letter tires that are turned around to the back sides. When I went to buy them, I tried serveral retailers and learned that there were only 3 black sidewall tires in the entire country.

So far I have driven 540 miles on these tires and am really liking them. The ride is smooth. The extra sidewall adds a noticeable cushion making the ride a little more comfortable. The sound is excellent. They as they are as quiet as regular highway tires. I've driven them on roads in dry and wet conditions and on dry gravel and they have been entirely unremarkable in consistently providing good traction and handling. The stone ejectors work well. I cannot detect any loss of drivetrain power.

I have to also confess a weird feeling of completeness having Toyos on a Toyota with both products being...



So how is fuel economy? These tires are 41 pounds per corner. They replace a set of standard size Futura Scrambler 265/70/R16 AT tires (a bargain Pep Boys brand) that I cannot find weight ratings on but I'm guessing are in the 37-38 lb. range. I've tested my fuel economy computer and, like many, have found it to be almost exactly 2 MPG above the actual fill-up measurements I've recorded.

On the smaller Futura tires, my absolute best reading was 22 MPG. My best on the larger Toyos so far is 20.9 MPG. Factoring in the 3.3% circumference increase, this works out to 21.6 MPG. In typical driving I usually averaged 21.5 MPG on the stock size tire. On the current tire I'm averaging about 20.6 MPG which works out to 21.3 MPG. Thus, my actual MPG loss going to the larger tire after 540 miles looks like this:

Average Driving:
Old Stock Tire: 19.5 MPG
New Larger Tire: 19.3 MPG

Maximum Economy:
Old Stock Tire: 20.0 MPG
New Larger Tire: 19.6 MPG
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Last edited by Harlock; 07-02-2021 at 11:52 AM.
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Old 07-11-2021, 06:37 PM #2
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The biggest concern I've had with the new Open Country AT3 has been with the wet weather performance. A number of posts and reviews in the past indicated this was a weak spot for the previous AT2 tire and the AT3 is supposed to have significantly improved this. Toyo's website rates the AT2 tires as 3.5 out of 5 for wet handling. This changes to 4.5 out of 5 for the AT3.

I've now had a chance to experience the tires in highway driving in both 2WD and 4WD during a major storm. I did not have to do any extreme acceleration, braking or steering. However, visibility was poor to non-existent during brief gusts, causing many vehicles to brake at unexpected times and once I was almost rear-ended. Fortunately the F-150 behind me was able to veer into the emergency lane to avoid me. Here were the conditions from NOAA:



In 4WD, the car felt firmly planted and even sticky. Traction was excellent. In 2WD, traction was still very good. However, there was about 1/10 second of wheel spin I encountered when I hit a spot of standing water and I did feel like I needed to be careful not to accelerate too quickly lest I lose traction. But driving never felt unpredictable. At this point, I'm very pleased with how the Toyo Open Country AT3s perform in the rain and I find their wet handling comparable to Michelin LTX tires I've had on other vehicles.

MPG Update after 985 miles:

I continue to do the majority of my driving on the highway. With this being the case, moving to a larger, heavier tire has had virtually no impact on fuel economy. However, I can tell from the 4Runner's computer that my stop and go driving drops the fuel economy noticeably faster with bigger, heavier tires.

Average Driving

OEM Tire*: 20.0 MPG
Old Stock Size Tire: 19.5 MPG
New Larger Tire: 19.4 MPG (up .1 MPG)

*I believe my 4Runner originally came factory equipped with 265/70/R16 Dunlop Grandtrek tires with a weight of 34 lbs. each. I still had this tire as my spare when I bought the vehicle. I assume this was the tire used to calculate the fuel economy for the US Department of Energy. They have a posted combined MPG estimate of 20.0 MPG for Utah driving with 80% highway and 20% Stop & Go. While not exactly matching my driving, I feel this is the closest figure available for comparing tire size and weight changes. I now believe my previous Futura Scrambler AT tires weighed 37 lbs. each. As mentioned in my previous post, the bigger Toyo's are 41 lbs. each.
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Old 07-12-2021, 05:04 AM #3
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I have these same tires in the same size. Mine had tread squirm, BAD. I had to drive aggressively for quite a while to calm it down. It felt like driving on ice at higher than 65 mph speeds and got a little scary.

Before my lift there was no rubbing either. They definitely fill the wheel wells.

Best gas mileage so far with them has been 28 mpg. The slightly larger size works well with my 3.73 gears.
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Old 07-12-2021, 06:25 AM #4
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I have these in 285's SL rating on my 5th gen. Initially I loved them. But my go-to for the last 25 years has been BFG At's and these aren't anywhere near as good off road or in the snow. On the road they are awesome. Unless they chop like mine did and now 20k miles later they are at almost half tread and sound/feel like mud terrains. I'm going back to BFG's.
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Old 07-12-2021, 08:07 AM #5
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Quote:
Originally Posted by Flesh Eater View Post
I have these same tires in the same size. Mine had tread squirm, BAD. I had to drive aggressively for quite a while to calm it down. It felt like driving on ice at higher than 65 mph speeds and got a little scary.

Before my lift there was no rubbing either. They definitely fill the wheel wells.

Best gas mileage so far with them has been 28 mpg. The slightly larger size works well with my 3.73 gears.
Quote:
Originally Posted by 85GT-79FJ40 View Post
I have these in 285's SL rating on my 5th gen. Initially I loved them. But my go-to for the last 25 years has been BFG At's and these aren't anywhere near as good off road or in the snow. On the road they are awesome. Unless they chop like mine did and now 20k miles later they are at almost half tread and sound/feel like mud terrains. I'm going back to BFG's.
I'm running the E load version of these tires in a 285/70/17 and have not experienced any of the issues either of you have mentioned. They are also made here in the USA. Excellent road manners in both dry and rain, excellent grip in dirt and mud as well. Haven't had them in the snow yet but if they work anywhere near as well as the AT2 in the snow, they are just fine. Over 17k miles and tread wear is excellent, still looking almost new. Road noise hasn't changed a bit either, still quiet for an A/T tire. Quieter than BFGs have ever been in my experience.
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Old 07-12-2021, 04:03 PM #6
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I’ll judge the overall of these tires after the trek out to Silverton and back. Hoping they behave well on the interstates.

Definitely regret not buying an E load.
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Old 07-12-2021, 04:51 PM #7
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Quote:
Originally Posted by Flesh Eater View Post
I have these same tires in the same size. Mine had tread squirm, BAD. I had to drive aggressively for quite a while to calm it down. It felt like driving on ice at higher than 65 mph speeds and got a little scary.

Before my lift there was no rubbing either. They definitely fill the wheel wells.

Best gas mileage so far with them has been 28 mpg. The slightly larger size works well with my 3.73 gears.
Interesting. What size wheel did you have them on? I think stock SR5s are 7" wide vs. 7.5" on the Sport and Limited models. A wider tire on a wheel that's too narrow can definitely cause tire squirm. Especially if the sidewall is more flexible.

Also, 28 MPG?! Is such a thing possible or is that a typo?
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Philips Ultinon LED Interior Lighting, Weathertech FloorLiners, Toyo Open Country AT3 265/75/R16
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Old 07-13-2021, 10:12 PM #8
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Quote:
Originally Posted by Harlock View Post
Interesting. What size wheel did you have them on? I think stock SR5s are 7" wide vs. 7.5" on the Sport and Limited models. A wider tire on a wheel that's too narrow can definitely cause tire squirm. Especially if the sidewall is more flexible.

Also, 28 MPG?! Is such a thing possible or is that a typo?
Iím running 2021 4Runner wheels.

Thatís what the DIC in the dash read. Between 26-28, driving very conservatively. Figure itís like running 3.55 gears and the weight is minimally different from the Michelins I replaced.
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