Big O Tires- Conifer, CO horrible customer service by Jerry conifer Colorado!!. Having been a long time customer at Big O Conifer, I am disappointed to say the service has deteriorated to the point where I can no longer go there. After spending nearly $1000 on a set of new tires they informed me that I had a bad tire sensor. After replacing the sensor they could not get it calibrated and my dash light was still on. I came back three times and was told to drive the car and it would reset itself. They offered no further solution. I went to a my regular mechanic and they replaced the sensor with a factory sensor made for my car and calibrated the sensors. I had to spend over $300 to fix what they had done. They did however refund the cost of the incompatible sensor. But after 3 trips to Big O with no relief and then a trip to my mechanic I am furious at the waste of time and money. The owner is hothead and would admit no wrongdoing.