With the acquisition, which was effective Oct. 12, Sullvan has 78 retail locations and 17 commercial locations in New England.
Sullivan said it is "proud" to retain employees of Central Tire at each location, "maintaining the local relationships that have been established in those areas."
The 19,118 sq.-ft. Sanford location has a commercial tire area and seven bays. The 10,000 sq.-ft. Shawmut location will provide tires and tire service for commercial vehicles.
Paul Sullivan, the dealership's vice president of marketing., said the company is looking forward "to continuing the great customer service they have provided to both their retail and commercial customers for more than 70 years."
Sullivan Tire, founded in 1955, also operates 14 wholesale satellite locations; two truck tire retread plants; two LiftWorks facilities and three distribution centers.