I had to replace a tire that was flat. Took the car in to tire company that sold Michelin's and they replace tire that was not the tire I have on SI, so uponing taking car in for maintenance (oil change, tire rotation) my car now pulled dramatically to the left. Shop Foreman said you have a bad tire. Michelin replaces tire through another dealership and I drive for another 3000 miles, take car in for maintenance, car pulls again. Dealership insist it is not the car, it is the tire. Bring car back to Tire dealership, he orders another tire, but I insist he put in front of car before I leave to see if it pulls. It pulled, and this time I have the correct tire. Bring car to dealership and they are still insisting it is tire not car. Michelin is insisting it is the car not their tires? When I state pull, it pulls, this is not a slight pull it is a major pull. Tire dealership states in all the years of business he has never seen anything like this. I did not buy a new car to have to replace four tires when only needing one, and I did not buy a SI that I could not drive the way the car is intended to be driven? Please someone help?