Hmmm, maybe I'm not describing the surface very well...

Imagine that you have fairly smooth asphalt or concrete, and then you take really slick mud in one hand and spread it over evenly, leaving maybe 1/4 to 1/2 inch on top (0.5 - 1 cm or so). The thing that makes it so slick is the mud filling in the roughness of the pavement.

I think something to "cut" through the mud might do it. Although I'd prefer to avoid studs or big knobs :-). This is really more of a just in case measure. 90% of the time the roads are dry, and most of the rest I plan my routes to avoid the portion that floods when it rains.

Really anything with some kind of tread is going to be an improvement over my RibMo's, which are almost slicks. I'm probably spending too much mental energy on this, but it would be nice to avoid another surprise fall.

Thanks for the suggestions so far.

-Greg