It is not always advisable to go to a lower turn motor than its recommendations. Sometimes it is the heat that the ESC can handle rather than the turn limit.
Many years ago I use to run a Tekin Rebel 1st generation rated down to a 10T motor. It handled a 14T well but would get hot. It always thermaled with the 10T. I put a smaller pinion on the motor and was able to run the ESC with the 14T and it stayed cool that way. I then tried the 10T and it helped but still shut down at times. After a while I just left the 14T on it. I've known that guys have run lower turn motors but gear for torque to keep the motor cool. Thier car was slower than with the recommended motor.
I think your ESC, the 210 series is rated at 20T. The 310 series should be the one for 13T or more turns.
Hope this helps.