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We have received several queries over the past few months about Vittoria cotton tubulars that seemingly lose pressure over a 24hr period. If this loss of air pressure is occurring with any Vittoria tubular that has a LATEX tube inside then yes, this is normal.
THIS IS NOT A FAULT. The reason is as follows: Latex tubes are made from natural rubber, hence they are porous and they will slowly allow air to leak through the tube sidewall. The level of air loss over a 24hr period can vary depending on various reasons, ambient temperature, original pressure are some variables that impact the rate of air loss.
So why use latex tubes? Simply because they offer the best performance of all tubes:
So, is it worth the trouble of pumping your tires every day?
If you want a tubular for general training or entry level racing then try the Rubino Pro tubular or the Rally, both cotton casings but with a butyl tube.