buying a bbk and not factoring in bias

Brake Bias Calculator

Your brake bias is arguably one of the most important items regarding a finely tuned racecar and your ability to brake and control your car in a skid. I have poured a ton of time into building a webpage with some good info to tune your car, this includes calculators! It's free to use, and designed by a mechanic/tuner that knows how to build stuff with techy nerdy code stuff (that's ME!) as well as deep technical car-focused things. So mess around with them, what do you have to lose?


Brake Bias Calculator, it's easy, just google your current (or future) brake piston diameters, rotor size and the other information it asks for and try to dial in your bias before you buy the parts! Try it out now!

IS300 EBC RedStuff Rear Pads
EBC Brakes Redstuff 3000 Series Sport Brake Pad Set DP31589C to Fit LEXUS
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IS300 Steel Braided Brake Lines
StopTech 950.44007 Stainless Steel Braided Brake Hose Kit Front
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IS350 FL Caliper
A-Premium Disc Brake Caliper Assembly Compatible with Select Lexus Models - IS200t, IS300, IS350, GS200t, GS300, GS350, GS430, GS450h, GS460, RC200t, RC300, RC350 2008-2021 - Front Left Driver
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IS350 FR Caliper
A-Premium Disc Brake Caliper Assembly Compatible with Select Lexus Models - IS200t, IS300, IS350, GS200t, GS300, GS350, GS430, GS450h, GS460, RC200t, RC300, RC350 2008-2021 - Front Right Passenger
Buy on Amazon As an Amazon Associate I earn from qualifying purchases
IS300 to IS350 rotor conversion
R1 Concepts Front Brake Kit For 2006-2007 Lexus GS430; 2006-2020 Lexus IS350; 2007-2011 Lexus GS350, GS450h| Slotted Brake Rotors| Performance Sport Brake Pads and Rotors Kit|Hardware included
Buy on Amazon As an Amazon Associate I earn from qualifying purchases
IS300 EBC RedStuff Rear Pads
EBC Brakes Redstuff 3000 Series Sport Brake Pad Set DP31589C to Fit LEXUS
Buy on Amazon As an Amazon Associate I earn from qualifying purchases
IS300 Steel Braided Brake Lines
StopTech 950.44007 Stainless Steel Braided Brake Hose Kit Front
Buy on Amazon As an Amazon Associate I earn from qualifying purchases
IS350 FL Caliper
A-Premium Disc Brake Caliper Assembly Compatible with Select Lexus Models - IS200t, IS300, IS350, GS200t, GS300, GS350, GS430, GS450h, GS460, RC200t, RC300, RC350 2008-2021 - Front Left Driver
Buy on Amazon As an Amazon Associate I earn from qualifying purchases
IS350 FR Caliper
A-Premium Disc Brake Caliper Assembly Compatible with Select Lexus Models - IS200t, IS300, IS350, GS200t, GS300, GS350, GS430, GS450h, GS460, RC200t, RC300, RC350 2008-2021 - Front Right Passenger
Buy on Amazon As an Amazon Associate I earn from qualifying purchases
IS300 to IS350 rotor conversion
R1 Concepts Front Brake Kit For 2006-2007 Lexus GS430; 2006-2020 Lexus IS350; 2007-2011 Lexus GS350, GS450h| Slotted Brake Rotors| Performance Sport Brake Pads and Rotors Kit|Hardware included
Buy on Amazon As an Amazon Associate I earn from qualifying purchases

Don't just buy big parts

Learning what makes a good setup is an excellent start. Do you need slotted rotors? Don't buy drilled. Why would I want to upgrade to a higher coefficient of friction (CoF) brake pad? What are the differences between monoblock (fixed calipers) vs floating calipers?


Learning what parts to get and how your car responds to poor bias is the way to go, or just pay someone loads of money to hopefully do the job well.

Brake parts overview:
• CoF: "Coefficient of Friction". How agressive the pads are.
• Bias: varies from car to car, should be about 70/30.
• Monoblock/Fixed calipers: pistons on both side of rotor, are designed to absorb heat better than floating calipers.
• Floating calipers: pistons on one side, they do not perform well under high heat. These generally are fine as rear brakes.
• Manual vs powered brakes: If your car is boosted you may have issues with vacuum assisted brakes. Look into hydrobrakes or electric assisted. Manual brakes would need to be larger than the OE setup.
In the end, learn the terms, figure out what you want, but still consult an expert or shop for safety.

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