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.
How to check your tire tread depth. Tire tread depth gauges are a fast and easy way for you to know for sure if your tires are safe or if they need to be replaced. Find the shallowest groove of the tread and insert the pin of the gauge until the base is flush with the tire.