Hi pwedders, the attached link is a useful spreadsheet for you to align any Slot.it hubs with the tyres which will fit it.
In addition, smaller diameter S1 and S2 19 x 10 tyres CAN be stretch fitted to those larger hubs for a nice tight fit if you use silicons, and are not in the habit of gluing tyres to hubs.
The new Slot.It C1 compounds are designed to run on Scaly track.
Part nos are SIPT35 for the 20x9.5 & SIPT33 for the 20.5 x 10.5 both are designed for the 17mm wheels that you have.
I would avoid silicons unless your track is in a VERY clean enviroment they are great when the track is clean but very frustrating if it is not!
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