Some Honda Accord owners report experiencing brake vibration after replacing brake pads, which may be attributed to issues such as improperly installed brake caliper pins, leading to vibrations and grinding noises. Additionally, warped front brake rotors can cause similar vibrations during braking, necessitating resurfacing or replacement to resolve the issue. Owners also note that rust build-up under brake hardware and pad residue on the rotors can result in braking problems, including pads getting pinched or failing to retract properly, which might be alleviated by re-bedding the pads. Furthermore, some owners have encountered gear slipping after brake pad replacement, indicating potential transmission issues that require inspection by a qualified mechanic. To mitigate these problems, it is advisable to check the brake calipers, inspect the rotors, address any rust or residue, and have the transmission system examined for any underlying issues.