Tire Agent, an Entrepreneurs Roundtable Accelerator-backed startup that is looking to bring the tire industry into the 21st century, has today announced the close of a $5 million funding round led by American Family Ventures, with participation from ERA, Sidekick Fund, NY Angels and HBS Angels. According to Consumer Reports, the average tire costs about $97. Four new tires costs a little less than $400, and that doesn’t include added costs like taxes, fees or installation. Tire Agent wants to make tire shopping more convenient and accessible to customers, while…