Originally Posted by AddictedToRacin
I used the original 26t pulley and I had a 1,5mm split at the end because I simply overestimated the wear (with the Serpent I had much more tire wear).
But to be honest, the NT1 is fast with every tire split. I tried since friday how the car drives with different splits. You haven't to worry about it because the car drives nearly the same all the time. I even wondered how good it drove when I had 2 mm bigger rear tires
I usually start with 0.950 overdrive ratio ( actually it's underdrive ). It's 3mm split. I aim to get 4WD feeling at minutes 30 to 45. I feel much better driving 2WD slightly.