Question for people running Cooper A/T3's

[drewm]

A couple of weeks ago I replaced the 275/55/20 Michelin LTX MS2 that I've been running on my LE, and I went with the AT3 265/70/17 in the LT C rating, mounted on Konig six shooters. I read a lot including 1E's review on these tires and they seem to be a good all around tire. I went with the LT C for the deeper tread and a stiffer side wall for handling. I just did a run from NJ up to my house in VT and got 19.4 mpg, pretty much the same as I was getting with the MS2 on the same trip. I'm sure I'd get better mileage if I slowed down a bit, I averaged about 75 mph for the trip. I have the pressure at 38, and I feel the road a little more than the Michelin's. When I got to my house I found about 3 ft of snow plowed across my driveway, and had no problem getting through it. Overall I'm very happy with the Coopers.

I'm really thinking a lot of people with mpg drops either are running their LTs underinflated, don't know how to calculate mpg on a larger tire using gps distance, or actually have a mpg drop due to really aggressive mud treads.

Even the E rated LT AT3s only appear to be about 10-15lbs more per tire than the P for our sizes, which isn't that "crazy" when the P rated tire weighs 40ish lbs already.

 

[DesertDog]

I run mine at 44 psi. I got stock size tires.

 

[Gstick]

I' ve got 42000 miles on my Cooper AT 3's (LT265/70/17 Load Range C) I will no doubt get 50000 miles on them before they are worn out. I run 39 lbs of air year round. If I run a higher pressure, the center of the tread wears faster. I'm very pleased with these tires, other than how hard they are to balance. But since using a competent tire shop with a Road Force balancer, the balancing has been resolved.

 

[TXMTB4]

I have the P 265 70 R17 Cooper AT3. I have only 3000 miles on these tires but have not had any hit on gas mileage. I have a 2012 LE with TE wheels with all-time 4wd and still average 18 mpg. I am very pleased with the tires so far and agree with 1engineers posts in his thread. I feel these tires represent a very good value and are good for most types of driving I will do in my 4runner. They are not the toughest looking or the best for off-roading but you will really pay up if that is what you want. Note these tires will perform very well in most off-road conditions. I also feel they dramatically improve the look of the vehicle relative to the stock highway tires.

I have read many posts about the issues with balancing. I ordered the at3's online and had them installed at a local family owned (non-chain) tire shop that does good work. There were no issues and the tires are balanced great on the first try. Hope this helps.

 

[barcainho]

I recently got a set of the stock size and so far I have noticed they are a bit more quiet than the stock tires. I'm curios what everyone has them set at in terms of psi. I got them at 40 but think they are a bit to stiff on the city roads. Also what is everyone lowering them to? When hitting some trails

 

[Friggin Idiot]

About 18kmi on my Disco AT3's in LT275/70R17 C.
I should probably do a write up on them now that I have some experience but haven't gotten around to it. Besides there's already plenty of well written praise for them.
Overall a good tire. I've had no trouble in any conditions. I've taken it off-road through some places I wouldn't have even looked at twice with OEM Dunflops. Good traction and handling in all terrains and conditions: rain, drizzle, snow, ice, concrete, asphalt, parking lots, access roads... yea off-road too: dirt, gravel, wet grass, mud, thick greasy mud, mudholes, watery mud, mud cocktail, mud fried rice, mud gumbo.....
But seriously I've not once been disappointed with the grip on these tires. As I prefer a softer ride and more grip for my leadfoot tendencies, I typically run 35-36psi for just me in the truck. Loaded for vacation or towing I take it up to 38-39psi.

 

[Cymon]

I recently got a set of the stock size and so far I have noticed they are a bit more quiet than the stock tires. I'm curios what everyone has them set at in terms of psi. I got them at 40 but think they are a bit to stiff on the city roads. Also what is everyone lowering them to? When hitting some trails

I have 275 LRC and run 42psi unloaded, 44 loaded. I’ll echo all the praise [MENTION=122201]Friggin Idiot[/MENTION] mentioned above. They haven’t let me down in any conditions and have even exceeded my expectations in some (snow/ice).

 

[barcainho]

I have 275 LRC and run 42psi unloaded, 44 loaded. I’ll echo all the praise [MENTION=122201]Friggin Idiot[/MENTION] mentioned above. They haven’t let me down in any conditions and have even exceeded my expectations in some (snow/ice).

What about on the trails? What do you lower them to?

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[Cymon]

What about on the trails? What do you lower them to?

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General off-road (light to moderate rocky trails 20-22psi). Sand 15-18psi. Fire-road type trails 28-30 psi. These are just general, but it really is dependent on the situation as I’ll run Lower, higher, or anywhere in between. My JT brooks tire deflators make dialing it in pretty quick and easy.