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Originally Posted by CZ-75
If you read Stoptech's product literature, you'll see they are well aware about bias issues and design their systems to move bias TOWARD the rear by slightly decreasing front brake torque, despite the increased mechanical advantage of larger rotors. They do this via adjusting the piston sizes of their calipers to exert less force for the same brake line input. Their intent is to give the driver better feel and wear characteristics inherent in a multi-piston caliper with the increased thermal mass of the larger rotors, not to have front brakes so powerful they'll stand the car on its nose.
A few years back, Car and Driver tested front BBKs on a WRX and found that most actually offer a bit of improvement in stopping distance over even stock brakes with high friction pads and all offered better fade resistance. Stoptech was among the best and were the cheapest option.
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This I know, because StopTech was the manufacturer used in the article. But the manufacturers talked about here are Rotora and Brembo. There are manufacturers out there that actually R&D each vehicle and are cheaper. StopTech is one of them. I was making a comment more for food for thought then anything. There are a lot of people who incorrectly assume BBK automatically = better braking. I'd rather people stop short than get the wrong information and stop too long.