how low can i go and what tire's should i use?

the way i do it to get a rough idea of where the tires/fenders will sit is to find out the overall diameter of the tire u want and cut that in half. measure up that amount from the center of ur hub and thats where the top of ur tire will sit on ur suspension. just measure ur fender gap and decide how much of a drop u have room 4. hope thats understandable. may not b pinpoint accurate but its good enough for a rough idea...