As I know, only tyre which can fit CD's 17 inch Rim is 125's rear tyre, size 300-17. It can be installed but Level of Bike will raise from rear. Its wider size will cause extra load on engine.
Instead you can use softer tyre like panther or service 4 ply tyre with 30-40 pounds air pressure. This will give you good road grip without causing extra load on engine.