<span style="-webkit-text-size-adjust: 100%;">All that a larger rotor does is increase the leverage your brake has on the wheel (and improves heat dissipation if fading is as issue). The actual feel of the brake at the lever doesn’t change. If a brake modulates poorly a larger rotor can make that effect worse. </span>
<span style="-webkit-text-size-adjust: 100%;">The four piston Shimano calipers use a layout with paired pistons of different sizes so brake pressure from initial pad contact to full clamp-down has a significantly larger range compared to their two piston options.</span>
<span style="-webkit-text-size-adjust: 100%;">It really solves the initial on/off feel of Servowave brakes and provides more deep end stroke power when really hauling on the binders. The longer pads also mean more friction material in contact (rotor + pad). </span>
Dec. 8, 2017, 3:45 p.m. - Andrew Major
<span style="-webkit-text-size-adjust: 100%;">All that a larger rotor does is increase the leverage your brake has on the wheel (and improves heat dissipation if fading is as issue). The actual feel of the brake at the lever doesn’t change. If a brake modulates poorly a larger rotor can make that effect worse. </span> <span style="-webkit-text-size-adjust: 100%;">The four piston Shimano calipers use a layout with paired pistons of different sizes so brake pressure from initial pad contact to full clamp-down has a significantly larger range compared to their two piston options.</span> <span style="-webkit-text-size-adjust: 100%;">It really solves the initial on/off feel of Servowave brakes and provides more deep end stroke power when really hauling on the binders. The longer pads also mean more friction material in contact (rotor + pad). </span>