Cooper Discoverer A/T3 Review

That's what I'm running now with around 35, 000 miles on them.265-75-16s. And planning on putting on same brand in 285-75-16. Before the snow

 

Just remember guys before buying, that P rated tires have less tread depth than C-E, so they likely wont last as long

 

I just turned 353 miles on my new P-rated 265/75r16 Cooper Adventurer ATs. I still had 1.3 gallons. My range for the tank was 376 miles.

 

I dunno. I have cooper AT3 now and got stuck less with the stock dunlops...

 

P275 65 18

 

I installed a set of 6-ply 265-70R17 AT3's on my '13 DCSB Sport 4x4 back in February (based on OP's review), have a little over 10k miles on them now. Until I recently learned to keep at least 35lbs of air in them, they took 5-10 miles of warmup before the belts quit shifting and the tires smoothed out. The higher air pressure seems to have mostly addressed that problem, but they still shake and shimmy a bit after first getting on the road. This characteristic had really concerned me as I had one warrantied for being out-of-round, and the rest of the tires gave me the same sensation. Seems to be mostly all better now.

The Coopers did prove to feel "heavier" on the steering wheel than the lighter, 4-ply stockers, but I don't really mind that. Haven't picked up any thorns yet in the mostly two-track deer lease roads that I see in South and East Texas, and they are reasonably quiet on the pavement. I don't do any real aggressive off-roading, and they seem to work in my application.

SSTX

 

SSTX Are your Coopers load range "C" or "E" please?

 

Which size and load rating did you select. I have BFG KO2's in E and they are just to stiff on ride quality. How are your AT3's on ride quality? Thanks.

 

My rode quality is great just like stock tires!! I'm running a 265 75 16 Cooper AT3 in a load range 114T, it ever specified the load Range in a letter just the 114T. I'm pretty sure it's close to a C which is a 6 ply tire!

 

You probably got the passenger rated ones, not the LT rated then

 

When I get back from vacation in Florida I'll have to look at the tires cause I believe they are rated for like 2800lbs each or something like that.

 

I believe when I was deciding between LT and P the P were actually a higher weight capacity than the C were

 

Here I found my invoice slip and they are 116T rated!

 

Here is what the 116T is rated for and it's alot more than Standard Load!!

 

Here is the standard size tire for the truck in a 245 75 16 which has a load range of 111T! Which is only rated at 2403 lbs so about 300 lbs less!

 

My C rated AT3s ride markedly smoother than the P rated Hankook ATMs they replaced, which was quite surprising. I have been very pleased with my AT3s.

 

That's a standard load (P rated) tire, not an LT "C" rated tire. It likely still has "4 ply's"

 

On Cooper's web site the "P" 265/75R16 116T "STD" is rated at a listed 2756 lbs and the LT265/75R16 112/109R "C" has a rating of 2470 lbs. I was reading on the Tire Rack web site on tire ratings where they state that LT tires are derated according to government regulations to a lesser rating capacity in pounds because trucks stand a good chance of being overloaded beyond the rating where as passenger tires because of the "car" configuration usually cannot be overloaded.

I might assume that because of this derating in listed weight the two tires may be the same construction?

 

The technical explanation as given:

P-metric tires used on passenger cars and station wagons are rated to carry 100% of the load indicated on the tire's sidewall (or listed for the tire in industry load/inflation charts). However, if the same P-metric tires are used on light trucks, (pickup trucks and sport utility vehicles for example), their carrying capacity is reduced to 91% of the load indicated on the tire's sidewall. This reduction in load results in causing light truck vehicle manufacturers to select proportionately larger P-metric sized tires for their vehicles to help offset the forces and loads resulting from a light truck's higher center of gravity and increased possibility of being occasionally "overloaded."

For example, P235/75R15 P-metric sized, standard load tires used on cars and light trucks would be rated to carry the following maximum loads at 35 psi:

Cars Full Value 2028 lbs.
Light Trucks 9% Reduced Value 1845 lbs.

 

I was simply pointing out he's got passenger tires with less "plys"/thinner sidewalls than an LT tire.