Don't have a tread depth gauge, will update with depth, however, they were new off of the 2010 WRX I bought in August 2011. The car was used but I believe they put new tires on. Drove the car back from Oregon to MN, about 1700 miles, and somewhere along the way the one developed a sidewall bulge. So I bought new tires and stored this on its side. This one is the only one I have left and is in great condition. They are $203 new each on Tirerack.com. I'll sell this one for $150 OBO. Let me know.