I tend to use a tire that works in all conditions and will sit and keep a steady cadence where it's slick.
Right now have a 700x23c bontrager RXL All Weather Hardcase on the front and a 700x23/25 Special Ed Roubaix Armadillo Elite on the rear, though will be on 700x25 Continental Grand Prix 4 Seasons sometime next week.
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Appreciate the old bikes more than the new.