The black specs are probably brake dust or something from the road? Water + brake dust = black specs for me.
I've had Schwalbe Big Ben (raceguard) and Marathon green guard tires on my bikes. The Big Ben/Big Apple tires really do have great rolling resistance. The Marathons are a great value. I picked up a set of Schwalbe Marathon Winter tires for my folding bike for $25/each on ChainReactionCycles (UK site). Tom -- 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/05a1df23-bae5-4fb7-abe3-12dfd3a5d801%40googlegroups.com.