5

those gearings are kind of close, so i'm guessing geometry has more to do with it. i'm about 6'1" and i'm used to skidding from just out of the saddle (more about function skids lately) at 73.5 gear inches. i tried skidding on my friend's bike (she is much smaller) who has a lower gearing and it was toughhhhhhh to get used to. geometry made a big difference there.

and about the tires, i still switch mine up a lot, partly to figure out what i like, partly because i don't always have money...but i notice a big in how skidding feels, even to the point where it takes more effort to skid on some of the same size tires.