Ok...so I had to warrentee a tire today because I was stupid on Sunday night.... (
http://www.toyotanation.com/forum/t37050.html ) and now I have three tires with 7/32 tread depth and one with 10/32 tread depth. NOT the most ideal situation, but I couldn't afford to get another new tire to match the warrentee.
Question: Where should I put the new tire? Right now, it's on my front passenger side. Is it ok to leave it there? Or would it be better to switch it onto the rear? All three of the other tires have the same wear characteristics since I rotate them twice a season.