Quote:
Originally Posted by Pete R
Actually He's 100% correct. Once your brakes have enough force to lock up the tires, you have enough brake. Your stopping distance is a function of tire grip not brakes. The only practical reason to put on bigger brakes is to absorb heat, heat that won't be generated on the street. Other than trying to be cool, big brakes really serve no purpose on the street.
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I suppose that's why Porsche is continually upgrading the brakes on all its cars... There were at least 4 upgrades over the 928's production run.
There's more to braking than being able to "lock up the tires." Hell, even drum brakes will "lock up the tires" - at least once before they fade to nothing. There is also brake feel, control, and yes, heat management. Upgrading to S4 or better brakes is one of the most worthwhile improvements you can make on an early car - whether you drive it on the track or not.
There is nothing particularly bad about the brakes on the early cars, the 4 piston Brembos just work better.
James