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Originally Posted by arenared
They are NOT the same.
Boy, this thread sure degenerated pretty quickly. The need for bigger/larger brakes depends on the usage. A 3.4L has 50% more power than a 2.5L and will generate speed a lot faster. If you are over-heating the stock brakes, then you are perfectly justified in putting in bigger brakes. I presume the poster that put in a 3.4L did so because he drives "enthusiastically". The difference in weight between base and S is minor. Going to 350mm GT3 brakes is another story however which is why Porsche offers PCCB in that size.
Contrary to what most people think, IMHO, upgrading the fronts without the rears is a mistake. The problem is that by enlarging the fronts, you increase front brake bias. The cars already have heavy front brake bias. There are significant gains to be had with shifting brake bias to the rear.
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Hi,
This is a fallacy. Power has nothing to do with it at all. Power will get you to 60 or 90 MPH faster, but the brakes are still hauling the car down from 60 or 90 MPH just like before, no change whatever. If they were adequate before, they still are. They are more fade resistant, but this is a non-sequitor on a Street Car which has adequate cooling time between normal brake applications.
If you Track the car there is an improvement worth the expense, if not, there simply isn't. You can brag that you have the 911 upgrade, and if you are ever in an accident situation where you could only stop within 7 ft. of the other guys bumper, than the 'S' brakes will be an asset, otherwise, not at all...
Happy Motoring!... Jim'99