Bought 4 new tires. Truck was perfect going in. Came out and low tire light on and Maint. light would blink twice every time I started my truck. Was told to drive for 20 min's and call if still a problem. Went back and they put new senor in. Low tire light was off. But my Maint. reg light would blink 6 times when I started my truck. They said it could be anything. Went to N.H. with my truck and the Maint. Req. light came on. Now I'm going back to see what they say. I take great care of my truck. No problems with my truck ever. Who has time in this busy life to get excuses and having to go back because of non factory senors.