Check Tires With Coins
Popularly called the penny test, this coin test is cheap and effective in checking the condition of a tire. To use a penny, get one with the famous Lincoln facing downwards. By placing the coin downwards, its length helps to check the grip of a tire.
Check for the lines on a tire placing the coin downwards and check if the tread gets to the forehead of Lincoln. If it does, then the tire is in excellent condition. If just the tip is covered or before the head of Lincoln engraved on it, then it’s time to replace the tires.