5-7-3 is a good "base" setup, but as already mentioned, there are too many variables to give a recommended setup for you without knowing what your track conditions are, plus it's not clear what you need the car to do after first starting with the base setup, use the following guide to make any necessary changes from base setup:




As for me, I run on medium to low grip wet-smooth fast flowing track so I run 20-20-5 with my current setup for reference... I'll drop to 10-7-3 for bumpy/dry/loose conditions, and anything in between my medium grip setup depending on conditions, weather, etc...