The way we approach it is to make sure that for a given line pressure, each wheel's brakes give the same
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(or very close) the standard amount of torque, allowing the vast majority of people to retain the standard master cylinder and bias valve etc.
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Or course if people want more front or rear bias the setup can be customised, but most don't.
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The normal way this happens is as the discs get larger
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(and disipate heat faster etc as a result), the pistons can get smaller, giving you a better pedal feel.
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Here are a few real examples of the way the bias is affected
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(I haven't got the numbers for the new/due soon Supra front disc 4-pot
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/ RX8 rear disc OEM caliper setup, I can do them if you like?)
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:
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Standard Rev 1 Mk2:
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![Image](http://i279.photobucket.com/albums/kk159/keri-wms/bias/SW20-R1-OEM.gif)
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Standard Rev 2 Mk2:
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![Image](http://i279.photobucket.com/albums/kk159/keri-wms/bias/SW20-R2-OEM.gif)
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.
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.
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.so that's the standard cars, here are the upgraded options.
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.
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.
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.
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Rev 2 rear brakes matched with 298.5mm disc
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/ 1.38" piston WMS kit, what most people would use I'd have thought:
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![Image](http://i279.photobucket.com/albums/kk159/keri-wms/bias/SW20-R2-1_38-4P018.gif)
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Rev 1 rear brakes matched with 298.5mm disc
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/ 1.25" piston WMS kit, handy to know it works:
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![Image](http://i279.photobucket.com/albums/kk159/keri-wms/bias/SW20-R1-1_25-4P018.gif)
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-------------- the ones below don't have a handbrake
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(WMS 4 pot front and rear) so are full-race only
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-----------------
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Maintains bais, might have a soft pedal:
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![Image](http://i279.photobucket.com/albums/kk159/keri-wms/bias/SW20-1_75-4P018-1_38-rear.gif)
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Increases front bias, medium pedal:
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![Image](http://i279.photobucket.com/albums/kk159/keri-wms/bias/SW20-1_75-4P018-1_25-rear.gif)
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Increases rear bias, best pedal:
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![Image](http://i279.photobucket.com/albums/kk159/keri-wms/bias/SW20-1_38-4P018-1_25-rear.gif)
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