I picked up a slow tire leak in my Caravan with a brand new Michelin Defender tire. Took it to a tire shop and they said they found a small nail and repaired it but didnt mention where the repair was. Last week I was changing the oil and looked over and noticed a plug on the side of my left front tire right where the shoulder meets the sidewall. The tire still has 10/32 of tread left on it and I didnt buy road hazard protection. I have driven over 2000 miles of mostly highway driving and thie tire has not lost any air. 2 local tire shops say it needs replacement immediately, 2 others say as long as its holding air, just keep an eye on it. Im thinking it might be best to replace it, but if its lasted this long, should I rotate it to the rear and see how it goes?