If you already know Visual Basic or Visual Basic for Applications, VBScript will be very familiar. Even if you don't know Visual Basic, once you learn VBScript, you're on your way to programming with the whole family of Visual Basic languages.
Use a tread depth indicator or gauge. You can use a special tread depth indicator or gauge tool to measure your tire's tread. If you don't already own one, the gauge is cheap to purchase from an auto parts dealer and it's easy to use. You may be able to find a downloadable tread depth gauge by searching online.
Goodyear suggests checking your tire tread every 3,000 mi. (5,000 km). Below are two simple tests to see if your tires need to be replaced. For a professional evaluation, find a Tire & Service Network location near you.