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Regarding the 8 piston calipers: ============================================== Braking gets an upgrade to keep the M5 in check. Big 14.7-inch rotors in front and 14.6-inchers in back slow the M5 from top speed quickly and without drama. Two-piston calipers clamp the front rotors. The M guys eschewed the fashionable four-, six-, and even eight-piston calipers because, they correctly claim, the effectiveness of the brakes is limited by tire traction, not rotor clamping force. 
source: [ http://www.carsdirect.com/bmw/m5/reviews ] ============================================== Since you may not have heard of “The Brake Man”, let’s first give you some background. The President, Warren Gilliland has been designing brake systems for almost 40 years, far longer than anyone else in the business. Notice we said “designed”, not “copied”. At Hurst/Airheart in the 60’s, he designed the first “quick change” calipers that have since been copied by a variety of competitors. The first “quick change” calipers were developed for Indy cars in the late 60’s and for a few years, were on over 80% of the field. He also designed the brake systems for the Bay Area Rapid Transit Train and Disneyland’s parade floats and Autopia cars. Other products, such as the cambered spindle rear end for NASCAR, the dual rate sway bar, and other innovative products reached the marketplace because of his ingenuity.
With regard to the brake products, they are the result of having watched the industry stagnate and produce nothing of any significance for almost 30 years. Consumers were being sold old brake technology because they were the only products available, and until the new “Tornado” calipers, patent number, 5,515,948, were produced this held true. For years, the same old designs were being recycled, recolored, but otherwise unimproved. Instead of applying true technological improvements, many brake companies are selling poor concepts. For example, the industry attempts to sell 6, 8 and 10 piston calipers as being superior to 4 piston calipers. This is not true. The number of pistons has nothing to do with what a caliper truly does, which is to apply torque. It is a fact that the greater the number of pistons, the lower the “clamping” force of the caliper. Another example is the staggered piston bores in many calipers. They say that staggering the bores is done to eliminate pad taper caused by heat differentiation. The fact is that tapered pads are a result of poor caliper design and resultant flex. Reducing the size of one piston also reduces clamping force, so they are in essence, reducing the capability of the caliper. source: [ http://www.motionparts.com/page.php?page=thebrakeman_speaksout ] ============================================== :With the SC5 street pads? They are at a great price point thats for sure with an 8 piston caliper up front.
:TIA MikeS
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Re: Anyone Tried K-Sport Brakes? - 
