I had the same problem. Number one, have you changed/upgraded your shocks and checked your alignment? The stock shocks are not very good. I upgraded my shocks and went with Cooper tires for two reasons. A less agressive tire and 40% cheaper. Those big lugs on the side will not take the drag when turning while towing. My thought was if I had to replace them more often I might as well ruin a cheaper tire. I also changed from the stock 255/75R/17 to a 265/70R/17. They are the same height but there are a lot more choices in this size. I got mine for an out the door cost of $625. The OEM tires were well over $1,000 out the door.
So far they are not wearing (knocking on wood now) and they ride and drive better than the OEM tires. We just had a major snow and ice event and they performed just as well or better than the OEM tires.
If you want to see how they look I can go take a picture and post it later.
Hope this helps, good luck.