CME Auto Co., Ltd.

1.What could cause the brake caliper to rub on the inside of the wheel when applying brakes?
If you just changed the pads and did not compress the caliper piston all the way down. the caliper can rub against the wheel. The whole caliper floats and if the piston is not fully compressed it can hit the wheel with the new pads on.
2.Which is better, slotted or drilled rotors?
CME brakes provides rotors slotted, drilled or plain. For most performance applications slotted is the preferred choice. Slotting helps wipe away debris from between the pad and rotor as well as increasing the "bite" characteristics of the pad. A drilled rotor provides the same type of benefit, but is more susceptible to cracking under severe usage. Many customers prefer the look of a drilled rotor and for street and occasional light duty track use they will work fine. For more severe applications, we recommend slotted rotors.
3.Won’t bigger caliper pistons stop better?
A bigger set of caliper pistons will provide more clamping pressure on that axle, but could have a negative effect on total brake performance. If the pistons are too large for the application there will be excessive pedal travel and an adverse change in front to rear balance resulting in extended stopping distances. Also, clamping forces can easily become so strong that pre-mature lock-up will occur making brake modulation difficult.
4.Should I flush the brakes?
You should always be flushing the brakes once per year. Read your car’s owner’s manual for manufacturer recommendations.