Uniroyal and B. F. Goodrich formed a new firm.

The two tire companies made formal a previous agreement to merge their tire operations in a joint venture that would rival Firestone Tire & Rubber as the nation’s second-largest tire maker. The new company, Uniroyal Goodrich Tire Co., is equally owned by Middlebury, Conn.-based Uniroyal and Goodrich, and will have its headquarters in Akron, Ohio, with original equipment management based in Troy, Mich. Plans for the joint venture were announced in January.