RTS/X Width Question

[SteveC]

[bean-a-reano]

Close, but 106mm or smaller for an 18-20" wheelbase. Biggest I've seen are 129mm on the course. I would only run 139mm if I had center set wheels on a GS course.

[bpz]

Usually slalom trucks are 120mm or narrower. We get our stability from the longer wheelbases, not wider trucks. You still need to be able to turn hard and quickly, and that's why narrow trucks work best.

[SteveC]

Ah... after actually looking at tracker's website and not some third party, I see that they are made at

85mm, 106mm, 129mm, 139mm and 149mm.

so I'd start at 18" and add an inch per 10mm?

Or am I being too Literal and It doesn't work that way?
I guess there's a lot of other factors like shoe size, hill grade, course layout, and no "right" answer...