I don't know about the Xtremes, but I have 285/75/16 ProComp AT's And they suck. There a 50,000mi tire and I have 25,000mi on mine and 5/32" left thats with rotating every 5000mi and all highway. They are also not worth a damn in mud, they clog up and turn in to mud slicks. I'm needing tires soon too and would not recommend them. Hope this helps, just trying to save you from buying junk.