John, just caught your thread. First let me say this, the reason the one wheel had the tire dismounted was because as I told you the yoko ran low for 25 miles so I took the conti off and put it on my car for safety reasons as I explained. I don't know anything bout a crack, but as stated above any good body shop with a high grade miller welder can tig a crack and it will not be visible if done from the inside. Shouldn't charge more than 10-15 bucks. I'm sorry for your buyers remorse, but if you compare prices I have just seen, the deal you got was extremely generous on my part. I assure you there was no known issue (crack) I was aware of and it never lost air . If you want I can get a friend to tig the crack, ( send photo to confirm) for free, just another drive....to as you say "the middle of nowhere" ....actually the home of James Michener, Margaret Meade, and many, many other notables. Do a search! If you want I can call back the other buyer who was terribly disappointed and put u guys together, if he hasn't already pulled the trigger on another deal? You're giving me "sellers remorse". Your assessment of tread left is incorrect, but I don't want to question your judgement. I enjoyed making your acquaintance and wish no ill will between us.
Gary
PS nexen tires compared to the contis are the equivalent comparison of a Porsche to a Miata. One is a performance sports car tire, and the other is just a set of cheap, noisy, wannabes.