I've been surprised at how well Schwalbe Big Apple tires roll, especially considering their resilience. I'd recommend those based on how good they seem to ride on my commuter bike. Mine are 26"x 2" and feel faster than the Marathon Plus that were on before.
In terms of the black speckles, it looks almost like grime from fresh tarmac or sun softened tarmac. A wide and long mudflap on the front fender should mitigate the issue. IanA -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/31249b7e-dcef-4a47-9c05-bf26254a9ce4%40googlegroups.com.