Goodyear Auto Care's mechanics, certified by the institute for Automotive Service Excellence, slip under car hoods and undercarriages to perform tasks from routine oil changes to intricate engine replacements. Tools let out pneumatic whines as they install new tires from brands such as Michelin and Goodyear, and the complete list of services includes brake adjustments and state inspections. They also pick up and drop off customers by appointment and provide loaner cars when needed. Tow trucks rumble out of the lot en route to get patrons unstuck from ditches or give third graders an idea for their thesis papers.