Probably from the simple fact that if you want to drive the car aggressively, be able to stick to the road while doing so, and receive feedback from the tires, you need not only a better rubber compound, but a better tread pattern.

Goodyear Eagle F1 GS-D3 tires out stick the stock Continentals not only in the dry, but in the rain, too. The tread pattern allows for the removal of water between the tire and the road than the tread pattern on the Continental's, and offers better grip while doing so.

There is a wonderful saying in motorsports:

"The best you've ever used is the best you know."

That not only applies to tires, but applies to cars, motorcycles, and various other things in life.

Until you try a tire other than your Continentals, you will never understand why so many other Crossfire owners use the tires they do that don't come from that manufacturer.

And if the Continentals were the best tire for the car, why were the Michelin's also offered on the car from the factory? And why aren't they the tire that every other car on the planet rolls on?

Simple answer:

They aren't the best tire.

BC.