Like violins, cars announce their need for a tune-up by squeaking shrilly and leaking oil every time you play Mahler. Keep your ride purring pleasantly with today's Groupon to Brake King, with locations in Chicopee, Northampton, Westfield, and on Columbus Avenue and Boston Road in Springfield. Choose between the following options:

• For $9, you get one oil change and filter with a tire rotation and safety inspection (a $19.95 value).
• For $39, you get a pothole-repair package (a $79.95 value), which includes:
  • Four-wheel computerized alignment
  • Tire balance and rotation
  • Tire-pressure check
  • Complete safety inspection and test-drive

Each of Brake King's five locations staff ASE-certified techs who coddle engines with clean oil and bring frazzled wheels and frames into perfect alignment. During each 20- to 30-minute oil change, engines exchange swampy old muck for up to 5 quarts of clean synthetic crude, along with a new filter, guaranteed to keep out clogs caused by incoming dirt, debris, and corn dogs. Technicians then rotate the tires to equalize tread wear and tear, before poking and prodding their way through a precise safety inspection.

The six-step pothole-damage package treats turbulent autos to a four-wheel alignment and computer balance to restore the car's posture and update its online dating profile. Mechanics then test tire pressure, rotate each road donut, and walk through a safety check to root out any problems caused by rolling over road craters or other tough terrain. Once each shock has been scrutinized and the alignment has been audited, the car is test driven to confirm that the buggy is ready to reenter the racing world, and that each wheel rides as smooth and balanced as a dolphin on a tightrope.