Tracking is when your car follows the "groove's" (think slight ruts from heavy traffic) in the road causeing your car to wander in the lane on roads that are more heavily traveled. This isn't really a problem on the highway but on city streets your car can feel slightly uncontrolable. Almost a similar sensation to Hydroplaning only you can keep control over your car.

-Kevin

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95 Eclipse RS - Rolled
96 Eclipse GS - Traded
95 Eclipse GSX- Sold
01 Blazer LS 4.3/5spd dropped and clean DD
88 Camaro RS 361 CID with a 6spd and a bar 10 second street car on motor.