Pictures show the depth, I know it's not lincoln's head exactly but smart people should get the idea. They are new-ish and clearly have a lot of tread.
As for miles, I would say 1,000 miles. I bought this car in winter and took these off right away for All Seasons, then I went to 19s and never used these again.
AWE NR | SWIFT SR| PAGID RS29 | CANFlap | 6MT