A method for a vehicle includes receiving a shift schedule for a transmission of a vehicle, the shift schedule indicating when shift events occur based on operation of the vehicle. The method further includes receiving vehicle operation data during operation of the vehicle. The method further includes determining a power to overcome vehicle losses based on the vehicle operation data. The method further includes determining an adjustment to the shift schedule to optimize a vehicle operating parameter based on the determined power to overcome vehicle losses and implementing the adjustment to the shift schedule.