Midway Bicycle Supply now has in stock 27 ” x 1 3/8″ (37-630) studded tires part number 480005. So now when someone wants to use their old ten speed in the winter they can, or convert one to a single speed for winter use.
These tires have 164 steel studs installed at the factory. We had the mold made so this is the only place you can get them.
Mike