We are required to carry chains and WA and it is possible that the state\npatrol can even require AWD to use them, though rare. I just recently got\nmy Tribeca and read that you can only use special chains. It indicates to\nget Subaru manufactured chains. I called Subaru up and they don't make\nany. Then the Service department told me that if you need to chain, that\nall four should. After reading the manual, it indicates to only do the\nfront.\n\nThere is a lot of misinformation and I am hoping to get help from this\nnewsgroup. Please let me know what chains can be used with a Tribeca, good\nplace to get them and the proper usage.