OK, here's the end story on my Subaru Outback and tire issue......
Measured tread depth of all good tires, and was about 7/32" tread left.
New tire tread depth 10-11/32 depending on size of tire 225x60x17.
That said, it's really over the recommened limit to match a 1 new tire with rest of good tires, or even buy 2 new matched pair.
Unfortnaltely, I don't have the time to find a used tire on Ebay or Craigslist with same life tread depth, so bit the bullet and bought 4 new tires.
After doing some research I bought 4 new General Altimax RT43 from Town Fair Tires. The tires are very quite on the highway, and run very smooth.
Of course they're brand new, we'll see how they are after about 10-15k of wear.
Thanks again for eveyone's feedback, it's been a really learning experience with my fisrt AWD vehicle.
On that note, I'll be trading my other car and buying a late model SUV.
Need a 6 cyl, Four Wheell Drive, decent gas milage, with light towing capacity (2500l-3000 lbs).
Looking at Honda Pilot, GMC Eonvoy, Chevy Traverse, Toyota Highlander
Any suggestions that are not AWD vehicle
