I have a new bike with 160mm rotors and Avid BB5 brakes. I wanted to step up to Avid BB7 brakes as they seem easier to adjust. The BB7s come packaged with rotor options -- 160 / 180 / 200 mm.
Can I go up a rotor size?
What would limit this? My fork has a brand but the manufacturer's website has no indication of rotor size limitation.
Is there any advantage to going up?
I should mention that this is for an electric-assist bike with 20" wheels. I do drag a trailer and live in a hilly area, so good/better brake performance going downhills is definitely appreciated.