and why would you want to replace the 20" wheels with a smaller wheel?

 

There are many reasons. More sidewall generally gives better launches, whether at the track or on the street. A smaller diameter rim most likely makes the rim and tire combo lighter, and certainly reduces the moment of inertia... meaning less force is required to rotate the wheels. A larger sidewall height also makes the car ride better on rougher roads (they can be pretty lousy in the Northeast) and make you less likely to damage a tire or rim on a pothole. Smaller diameter tires are cheaper to replace. And don't dismiss the notion that some people just like the way they look better.

 

if i cant get a good slick or drag tire on it i will be swapping to smaller brakes

 

Well doesnt the v8 ss come with brembo breaks. Why would want to down grade unless im not getting the point....

 

there you go. if you buy your camaro ss, then decide you want to make it a drag car, you won't need the big brakes, they weigh a lot and force you to run bigger wheels. when you can make the wheel smaller, it can be lighter too. then you can have a meatier tire to go on it, from a dragstrip point of veiw, you want the least amout of brake weight/size as possible that will also slow the car down.

now if you are an autocrosser/road racer who gets a v6, wants the additional stopping power of the big brakes and doesn't mind the weight penalty, then he and the drag racer would do well to swap each others brakes.

different strokes for different folks.