Empirical Motors / D&D Muffler and Tire has happily served the Hartford and surrounding communities since 1974. Originally focusing on the tire and exhaust industry, D&D expanded their offered services in 2014 to full suspension work, automotive HVAC, engine/transmission work, driveline repair, custom suspension lift kits (we are an authorized Rough Country Suspension dealer), and expanded our tire lines. We currently have 7 lift bays and two flat bays with intensions on building out another bay sometime in 2021.