Quote:
Originally Posted by silnismo
i don't think you have much to worry about, i have Z brakes GOOD tires and they practically never lock up, let alone q45 brakes which have 1/2 less pistons then the Z. the people that said they locked up all the time probably didnt have good tires.
my .02$
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I've had Q45 and Z32 brakes all around with the same suspension and tire setup, Q45 brake are more likely to lock up over Z32 brake, stock for stock they produce more brake torque over Z32 brake and the reason they do is becasue Q45 brake calipers have more piston area than the Z32 do. I know some people that read this are gonna say how is that becasue Z32 have 4 pistons per caliper (front) and Q45 have 2 piston per caliper (front) WRONG sliding calipers effectively have twice the amount of pistion shown so they effectively have 4 pistons and not 2 pistons, the slider bracket is basically a mirror of the two physical pistons on the Q45 calipers.
(FRONT)
Q45 has a total of 9.4mm of piston area over the Z32 in the front.
(REAR)
Q45 has a total of 0.4mm of piston area over the Z32 in the rear but the Z32 has 5mm more in rotor diameter making it beat the Q45 in rear brake torque.