Tires: Tire replacement, jeep grand cherokee, jeep grand cherokee limited

Question
I recently blew out my front left tire on my AWD '99 Jeep Grand Cherokee Limited.  Little did I know I would be told that I need 4 new tires. While my other 3 tires are in great condition having 8/32 tread left (new at 13/32) i am being told that I should only have 2/32 or less difference, or I will eventually burn up my transfer case. I cannot seem to find any info online to support this.  While Jeep recommends replacing all 4, they cannot come up with documentation for me.  What are your thoughts.

Answer
Julie,

If Jeep told you that, then they should have that in writing somewhere.

But I think if you visit some of the tire manufacturer's web sites, you'll find those types of comments - usually with the condition that their recommendation can be overruled by the vehicle manufacturer.