COOPER DISCOVERER AT3 4S TIRES - WEARING OUT FAST

I had a tire warning light come on today while out and about, so I stopped into Discount Tire for some air. Discount Tire pointed out the culprit the right front is leaking air and your tires will need replacing at 4/32s and you are at 6/32s and 7/32s . But THAT'S ONLY 24,700 MILES ON THE TIRES. But they have a 65,000 mile warranty. To be continued.

 

Pics of the tread? I’d of course check them myself too. That’s a short lifespan if true. Is this a mileage rated tire?

 

Left rear tire at 24,000 miles

 

65,000 mile warranty.

 

Honestly...literally everyone I know who has owned Cooper Discoverer AT3's (myself included) had riDICulously low mileage on these things before wearing out.

In my case I replaced them with like 10K miles on them because not one, not two, but THREE tires were either leaking air or the treads/sidewalls were completely jacked up.

I'm not a fan of Discoverer AT3's, and honestly I'm not sure I'll ever own Coopers again.

 

Yeah wow, those look too worn for that kinda mileage. Are you doing any difficult driving... off-road, towing, air pressure deviations? Just weird.
For comparison I feel I’ve been pretty rough on my Falken AT3w- off-highway, low pressure on the way home from off-road, slide in camper so overweight some of the time. I am fairly diligent about rotations and tire pressure (besides aforementioned way home from a trail) and I’m at 12/32 with very similar mileage to you. Mine still look pretty new. Hope they make it right. You’re not even halfway to mileage!

 

Well these are passenger load tires, although they are XLs, theyre still P load range. I remember this was an issue with the Falken AT3Ws on the Tacoma forum as well. Lots of people running the P load range because the Tacoma is lighter only to have them be swapped out at 30-40k max. I even ran them and had lost about 2/32nds in the first 5k miles.
https://www.tacomaworld.com/threads...-wildpeak-a-t3w.419869/page-194#post-18988491
Plenty more like that post in the thread.

The Tundra is a heavy truck, even though they make these in sizes that fit I wouldn't depend on a P load to last to the warranty rated mileage. Good news is you should be able to get a prorated amount back on the short life of the tire.

 

No its a E Load LT (Light Truck) Tire - All 4 = 11,332 max weight or 2,833 pounds per tire OR 117 rating -

 

The image you posted says XL, which is a passenger load tire. Hence the reason I presumed it to not be a LT.

 

Hell, I just checked Coopers site and they only make that tire in SL or in XL. It also starts with 12.5/32nd depth, typical LTs are between 16/32nds to 19/32nds.

None the less, XL is indeed a passenger load and not a LT tire.


From: https://www.worktruckonline.com/329...ave the letters,Class 1-3 commercial vehicles.


P-Metric tires are often broken down into additional categories: Standard Load (SL) and Extra Load (XL).

“Standard load (SL) tires are intended for normal, everyday use. They will either be marked with ‘SL’ after the tire size or not marked at all. Extra load (XL) tires are designed to be able to carry a higher load than Standard Load tires,” explained Mosier of Cooper Tire & Rubber.

LT-Metric is also a commonly used phrase, which stands for ‘light truck.’ These tires have the letters ‘LT’ in front of the tire size molded on the sidewall and are found on pickup trucks and light-duty Class 1-3 commercial vehicles. The tires can carry heavier loads due to a higher maximum inflation pressure, which varies depending on the load range.

LT-metric tires frequently have a different construction than P-metric tires, including deeper tread depth. Pickup truck tires require a higher load index to carry the vehicle’s load.

“This occurs when fleets use tires at a higher inflation pressure,” said Fardad Niknam, senior director of consumer product planning and product marketing at Yokohama Tire.

Load range is an indicator of a tire’s strength and defines the tire’s load carrying capacity and inflation pressure.

Light Truck (LT)-type sizes come in different load ranges identified by ascending alphabetic letters, starting with A. As the letters ascend, the tires are designed to carry more load and utilize higher inflation pressures.

 

That sucks, I ran ST maxxes and they wore like iron. Got to about 8-9/32nd after almost 45k.

Guess the At3 line is better for lighter trucks. I had them as well but only for about 5k miles before I traded into the Tundra. They were very smooth and quiet.

 

Nothing like a Michelin
When my Bridgestones are finished, I’ll put a set of LTX Defenders on mine