What size brake and rotors do i need for my 2001 Audi A6 Quattro 4.2?

I look online and see many different brakes and rotors to choose from. do anyone know exactly what i should get by my vin number. I see some rotors that are 321mm and some that are 288mm. And I also see 4pad system and 8 pad systems and some with sensors and some without. How can i find out exactly what i need without taking the wheel off. My Vin WAUZL64B91N157072. if that helps.What size brake and rotors do i need for my 2001 Audi A6 Quattro 4.2?my answer is try to go at this site http://www.autozone.com/ it's help youWhat size brake and rotors do i need for my 2001 Audi A6 Quattro 4.2?11.3" Check out the site.What size brake and rotors do i need for my 2001 Audi A6 Quattro 4.2?uhm it depends on what u wanna do. if u wanna do track days or quiestionable night driving, bigger is better. if u have ABS then id go with the sensor, along with any other type of traction control. im nto sure about the pads, but the genral rule with brakes is more is better... but as far as rotors go, if u live in the northeast, or ohio pennsylvania michigan area, id stay away from cross drilled. the salt around here rusts them out fast