Spotting abnormal tire wear and correcting the cause can significantly extend tire life. Normally, tires will wear evenly across their surface until they reach the wear bars, which are 2/32nds of an inch above the bottom of the tread. When the tires are worn to the wear bars, they should be replaced.
One shot (1.5 ounces) of espresso has about two tablespoons of coffee (about 1/4 ounces). For best flavor, one shot of espresso, or two tablespoons of coffee, should be used to make 6 ounce of coffee drink. Likewise, a 12 ounce coffee drink will taste best with two shots of espresso.
Similarly, a solo (single-shot) Espresso, Espresso con Panna and Espresso Macchiato all contain 75 mg caffeine, while doppios of the same drinks contain 150 mg of caffeine. A Starbucks Caffe Americano is made with one to four shots of espresso, depending on the size.