6in or 8in?

[AdamHeard]

For us, the question is always, "what is the smallest wheel we can safely run?".

This year, it's 4".

Andymark has great 4" wheels for cheap that will give you traction with the best of teams.

I recommended the 4" plaction wheels for a dead axle setup (the bearing has wheels in it and rotates on a shaft, and the wheel is directly driven by an attached sprocket), and the 4" performance wheels for a live axle setup (wheel driven by hexed or keyed hub).

The lower wheels make it way easier to get a low CG, among many other benefits.