I do 20 mph rides with a group, about 25 miles. No racing. These tires are perfect. No flats, good adhesion, roll nicely, look good on my custom steel bike.
These are the tires I had been begging IRC to make for 20 years, since they discontinued the IRC Triathlon kevlar. Smooth tread makes sense for bicycles. Strong casing makes sense. Light weight makes sense. Easy to mount on my Velocity rims. Made in Japan high quality construction.
IRC did not answer my prayers, but Panaracer did. Thanks guys!