To clarify, I haven't really have flat issues with the RibMo's. The bigger complaint I have is that they are really squirrely on any amount of sand/dirt/mud that washes onto the MUP and pretty poor handling on fairly packed dirt/gravel that I ride routinely on 28's and sometimes on 23's just fine. Something about the profile of the tire (the ridge down the middle, I think) makes them handle worse on non-pavement (for me) than narrower tires which is a bummer.

The flats I have had are recent and at least one was due to me not noticing a little piece of glass until it worked its way through the tire and into the tube. They haven't worn very well, but neither the bike, myself, or my usual load are anything approaching lightweight, so that may be some of it....

Hopefully we both enjoy the marathon winters in the next few months.....I've never ridden anything other than homemade studs so I'm interested to see how they pan out