Freebase (0.00 / 0 votes) Rate this definition: Tachypnea. Tachypnea is the condition of rapid breathing. In adult humans at rest, any rate between 12-20 breaths per minute is normal and tachypnea is indicated by a ventilatory rate greater than 20 breaths per minute.
A new tire retains a tread depth from 10/32 to 11/32. This tread depth is usually made to last anywhere from 3 to 5 years, depending on how well it is maintained. To measure the tread of a tire using an available chart, follow these steps: Insert a penny into the tire.
1 According to the tire industry, the average tread depth of a new tire can range from 10/32â³ to 11/32â³.7.  Tires age whether they are driven on or notâbe sure to check tires on recreation vehicles, trailers, collector cars, community vehicles and 15-passenger vans, too.8.