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.
Use a tread depth gauge, or if you donât happen to have one of those laying around, try the âpenny test.â Insert a penny into the tire tread grooves with Lincolnâs head facing down. If you can see the top of Lincolnâs head, your tires are at 2/32nds of an inch or less of remaining tread. You need new tires immediately!