1. A computer-implemented method of evaluating potential sales and business opportunities relating to establishing tire sales at an automotive service center that does not currently sell tires by calculating metrics that include a projected tire sales for the automotive center, comprising: collecting operational data from the service center and storing the operational data in a computer-readable memory, wherein the operational data comprises an average number of service or repair order requests per time period, a number of days the service center is open per time period, identification of one or more carlines serviced, and a tread depth of one or more tires on vehicles serviced by the automotive center during the order requests; calculating a maximum expected number of tires to be sold for each carline per time period using one or more data processors and storing the maximum expected number in a computer-readable memory, wherein the maximum expected number is equal to the average number of repair order requests per day multiplied by the number of days the service center is open per time period multiplied by four multiplied by a tire tread index, wherein the tire tread index varies according to carline and represents a percentage of cars serviced by the service center which have a tire tread depth less than a tread depth threshold; determining a tire sales goal for each carline, the tire sales goal being a fraction of the maximum expected number using the one or more data processors and storing the tire sales goal in a computer-readable memory; and calculating the projected tire sales for the automotive service center using the one or more data processors by adding an average retail tire price for a tire associated with a carline to a charge for services involved in mounting and balancing a tire to generate a sum, multiplying the sum by the tire sales goal for the carline, and scaling to the time period to generate a tire sales for a carline, and summing the tires sales for each carline to determine a total projected tire sales for the automotive service center and storing the projected tire sales for the automotive service center in a computer-readable memory.