American Tire Distributors has agreed to acquire Ontario-based Regional Tire Distributors, further expanding its Canadian presence. The acquisition is expected to close by the end of April. RTD operates five tire-distribution centers in Ontario and four distribution centers in the Atlantic Provinces. It has grown from two distribution centers in 2008 to its nine today, and will significantly expand American Tire's presence in the two Canadian provinces. It has been a portfolio company of TPG Capital since 2010, when TPG acquired it from Berkshire Partners, Greenbriar Equity Group and Investcorp for approximately $1.3 billion.