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.
With Bad Weather on the Horizon, Now's the Time for New Tires. While most passenger car tires come new with at least 10/32 of tread depth, most people don't realize that once the tire has less than 6/32 of remaining depth, your wet road and snow traction capabilities dramatically decrease. Even if the tire looks like it has plenty of life left, do yourself a favorâ¦.