How Do I Know What Size Bike Rotor?
How Do I Know What Size Bike Rotor? Here are some general rules of thumb: 160mm rotors for cross-country (possibly with a 180mm front rotor for heavier riders and greater versatility); 180mm front and 160mm rear rotors for 5in and 6in full suspension bikes; 200mm rotors for gravity riding. How are bike rotors measured? How