Swissstop actually do a special compound for 'sensitive rims' or some shit like that. I bought some in France because they were the only thing the shop had. They are black and for alu btw.
Interesting, are you referring to their "original black", as listed here? http://www.swissstop.ch/road.aspx
@Hovis started
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Interesting, are you referring to their "original black", as listed here? http://www.swissstop.ch/road.aspx