My tires are starting to wear but it seems the tread is still pretty deep and intact, or so it seems. My front treads (Stock Conti's) have decided that the outside block and the little strip of rubber next to it must meld together. Is this normal? I thought that they were separate strips of rubber but now I think not. I'm not the only one, right? I have almost 8000miles on the tires so far and it's only happening on the front tires. Please, someone tell me this is normal! And about how far are they worn at this point if someone has gone past this point already and replaced their tires.