Service is the biggest thing discounted. I scheduled and appt so I would not have to wait. They promised I would be out in 45 minutes. 45 minutes later they still had not started. I had to go, but then had to hang around because they had charged my credit card without having installed the tires. I went to a local garage to a guy who didn't treat my like dirt and the price was the same as this place. I thought the "discount" was on the tires, but apparently it is the service that is discounted.