Brian Maciak has been promoted to president and chief operating officer of Big O Tires LLC and will replace Jim Bull, who is retiring on July 1 after 17 years with the subsidiary of TBC Corp.

Big O Tires LLC, a subsidiary of TBC Corp. and a retail tire and auto service franchisor with 460 locations in the United States, is celebrating its 60th anniversary in 2022.

Rob Curry and Matthew Greco have sold nine Big O locations in Colorado to the father and son team of Ross and Sean Burton.