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: for $40, you get $100 toward new tires at Nevada Tire City.

Nevada Tire City facilitates smooth and balanced driving with an assortment of tires from manufacturers such as Goodyear, Kelly, and Hankook. Restore equilibrium and posture to a wobbly car with Hankook puddle plowers ($95.95+ each), which press against the pavement and kiss tight corners while gliding upon the road with the grace of a hockey player in the Ice Age. Goodyear Integrity size P215/70R15 tires ($85.95 each) come equipped with steel belts for tough reliability, an all-season tread compound that provides traction during inclement weather, and enough swagger to frighten a speed bump back underground. The Kelly Explorer 175/65R14 tire ($67.95 each) fills wheel wells with a dark, handsome hunk of rubber that sports stylish black serrated lettering and isolated tread elements that lend it excellent all-season traction. Customers who equip their cars with a set of four tires will receive a free nitrogen fill from Nevada Tire City (a $36 value).