I put a new master cyclinder in and the pedal it much stiffer and it dosen't go down when your sitting at a red light. I have 15" wheels on my car and rarely can i get the front wheels to lock up. Can anyone else with 15's or bigger lock the front wheels up ? I have cheap autozone pads and rotors that were ont the car when i got it. I think that if i got decent pads that they might lock up ?