Originally Posted by
tattooedchef
ok sorry but what is roll out im new to 1/12 scale but with my r5 wish i would have got to the party sooner

love that car handles like a dream
It is how far the car will move for one rotation of the motor. So when you see someone state they had a 90mm rollout, that means their car would move 90mm for a single motor rotation.
The calculation requires knowing tire diameter, spur, and pinion.