Our previous recommendation of the Aston Martin DB9 retrofit used the EVO 9/X pad and that served as a good starting point for our search. Not much difference when the car is cold however when the car gets hot, the benefits are visible. A BBK kit in essence is analogous to an intercooler or larger radiator for your cooling system. A BBK kit can longer sustain peak performance much more consistently at the track meaning more opportunities for more hot laps vs. This is where the benefits of a BBK comes in – larger thermal capacity in the caliper surface area to dissipate heat, more brake fluid volume, larger pad size heat dissipation and larger rotors. The braking performance actually stems from the brake pad itself, however when the pads overheats brake performance tapers down. Take for example in F1, drivers will set the bias more to the front during dry conditions, however they will change the bias to the rear during wet conditions to prevent front lock up. However, the caveat to this is that too high of a rear bias can cause severe platform stability issues and can cause the car to rotate during high speed braking. Most aftermarket setups yield a more rear biased setup which improves actual braking performance to a certain extent. Most OEM biases are front based designed for a bit of a compromise towards safety than performance. Simply how much of the braking pressure is at the front vs the rear? A balanced braking setup is critical to the car’s performance on track.Ī more front bias setup will yield higher stability for braking but introduces understeer and can tend to lock up the front tires with too much front bias. Our research shows that the Megan RS Trophy-R is the best retrofit BBK to sustain peak braking performance for the E46 M3 considering the following two attributes:īrake bias “establishes the ratio of braking force between the front and rear wheels brakes” according to Formula 1 Dictionary.
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