Originally Posted by remy
The answer to your question would be an economic's answer. Drums brakes are much cheaper than disc brakes and have a rather good reliability but not well as the disc brakes of course....(Answer this then,why doensnt every car come w/ cd players if that has been around for like ever now and are cheap as hell?)
Eventually the drum brakes are going to be phased out when the disc brakes parts become cheap as hell too,what a coincidence!
While cost is the primary driver, cars in general don't need rear disc brakes because most of the braking is done by the front two wheels (and with most cars of today, most of the weight is up front to begin with, augmenting the forward weight transfer during braking). Lower end cars will forever come with drum brakes because it saves on production cost, and because rear discs are unnecessary.