This winter I added tire sealant designed for tubeless tires in my tubes. Riding after work in the cold and sometimes finishing in the dark it was nice to have some insurance against flats but I wondered how much the sticky stuff sloshing around in my tubes changed the ride. I did find that I only had to add air once a week. I suppose the sealant filled a lot of the pores in the tube. I used Orange Seal and plan to set up a winter set of tires with it next year.
I recently replaced the tubes with untreated ones and subjectively felt like the ride was better. Similar to chaining to a more supple tire. Maybe this was just the placebo effect.
Now I am surprised to read the at the Blanco uses tubeless sealant in its racing tires at the Giro. Below is a quote from Velonews:
Inside the truck: A rest day with Blanco mechanics
Every tire gets a dose of Vittoria Pit Stop tire sealant. "With the latex tubes in these tires, the Pit Stop helps keep them from loosing a lot of air in one day, which they would normally do," Hoetelmans explained. "Plus, sometimes when the hole is small, it fixes the flat. Or it will fix the flat before the tire goes all the way down, so the rider can ride on it better until the car arrives." Photo: Caley Fretz | VeloNews.com
The race team knows what they are doing and sealant seems like a good idea?
The Race team is making a choice to avoid flats at the cost of speed, count me out?