Understanding TCS and traction in general is the best knowledge you can have. TCS is good for everyday driving but not for racing. This is why race prepared cars go with a positive traction locking differential. Most cars have an average TCS system from the factory and depnding on the popularity of the car, you may have a choice for a better aftermarket differential. Tires are a quick fix for traction, once they loose their new "bite" they are no more a cure. Good traction off the line is based on suspension upgrades to transfer more weight to the rear (if the car is RWD) Control arms and torque arms are the most popular bolt on fix. Often times, owners with powerful cars focus on power and not "power delivery" which doesn't allow them to make their best 1/4 mile time.

Here is a neat link that shows you how an electronic TCS differential works if interested.

http://www.traction.eaton.com/prod1.htm