Man, I just don't get it. I believe every one of you guys with what you are saying you are getting for wear out of your tires, but something doesn't make sense that there would be such a wide disparity in this area. As an engineer, this is driving me nuts as I believe there has to be something we are missing that is causing these differing outcomes. My personal experience is that the Bridgestone Dueler Alenza H/L's give me 85K+ of wear. I also read here where folks are getting similar wear out of their Michelin Defenders. That is why I am just baffled when I also read that folks are only getting 20K to 30K of wear out of what is supposedly the same tire. So I did some looking. Tire Rack has a few different options for tires shown for my 2013 Denali XL with the H/L Alenza name with different Load, Speed, Treadwear, Traction and Treadwear ratings. I wonder if this is contributing to the different experiences of folks because folks all have Alenza's but different performance ratings.
Dueler H/L Alenza Plus - 111H - UTQG: 800 A A - ECO-Product (whatever that means)
Dueler H/L Alenza - 111H - UTQG: 600 A B
Dueler H/L Alenza - 111S - UTQG: 700 B B (what I have been buying and is listed as OEM)
Dueler H/L Alenza - 113T - UTQG: 600 A A
Here is the link to what I ordered the last two times and what was on my 2013 when we bought it in July of 2019.
https://www.tirerack.com/tires/tires.jsp?tireMake=Bridgestone&tireModel=Dueler+H/L+Alenza&partnum=755SR0HLALNZ
For Michelin this is what I found for the LTX line of tires shown on Tire Rack for my 2013 Denali XL
LTX A/T 2 - 113T - UTQG: 500 A B
Defender LTX M/S - 113T - UTQG: 800 A A
LTX M/S2 - 113H - UTQG: 720 A A - Green X (whatever that means)
I know that I may push the life a little so instead of 85K, maybe I should say I get 75K+ of good thread life and then another 10K of life because I might push it a little.
My wife also does most of the driving and her commute is mainly highway so that may contribute to out experiences. She is also not an aggressive driver, usually.
I rotate the tires every other oil change (7000-8000 miles) and maintain the tire pressure regularly. Not saying others don't, just explaining what is happening on our vehicle.
Like I said, there has to be something that can explain the different experiences folks are having.