I know it's a fine point, but I think kDriveWheelFreeSpeedRps should be kDriveWheelFreeSpeedMps As found in Constant.java : the rotational speed (in Rpm) is being converted to a linear speed (in Mps) by multiplying it bt the wheel Circumference. ``` public static final double kDriveWheelFreeSpeedRps = (kDrivingMotorFreeSpeedRps * kWheelCircumferenceMeters) / kDrivingMotorReduction; ```