What is a tread wear indicator?
What is a tread wear indicator?
Tread wear indicators, or wear bars, are spaced evenly through the main longitudinal grooves in the tyre tread. They indicate how much of the tyre has already rubbed off and if the tyre is worn out.
What is a tread depth indicator?
A tread wear indicator is a narrow elevation across the longitudinal grooves of the tyre’s tread pattern. On the side of the tyre are the letters TWI (Tread Wear Indicator). When the tyre’s tread depth is down to 1.6 mm (1/16 inch), the tread will be level in height with the tread wear indicators.
What is the tread of a tire?
The tread of a tire or track refers to the rubber on its circumference that makes contact with the road or the ground. As tires are used, the tread is worn off, limiting its effectiveness in providing traction. A worn tire can often be retreaded. The grooves are not the tread, they are in the tread.
How do I check my tread wear?
Place a penny head first into several tread grooves across the tire. If you always see the top of Lincoln’s head, your treads are shallow and worn. If this is the case, your tires need to be replaced. If part of Lincoln’s head is always covered by the tread, you have more than 2/32 of an inch of tread depth remaining.
How do I know if my tire tread is worn?
Place a penny upside down in between the tire tread as shown. If you can see the top of Lincoln’s head, the treads are worn and tire replacement is needed. A quick and easy way to check your tire wear is with a tread depth gauge. It measures tire tread depth from 0 to 19/32 inch.
How do you check tire wear?
The easiest way to check wear on your tire is with a penny. Place a penny upside down in between the tire tread as shown. If you can see the top of Lincoln’s head, the treads are worn and tire replacement is needed. A quick and easy way to check your tire wear is with a tread depth gauge.
How worn can tires be?
Once the tread is down to 2⁄32 inch (0.16 cm), the tire is no longer safe and illegal in most areas of the world. In some U.S. states, tires are considered to be legally worn out when they have decreased to 1⁄16 inch (0.16 cm) of their remaining tread depth.
How does tread work?
The tire tread is the part of the tire that actually meets the road. The areas between the tread blocks are referred to as the tread voids or tread grooves. Tread voids provide the tire with traction by enabling the tread blocks to move and flex as the tires to grip the road.
How do you read tire tread depth?
The best way to measure your tread depth is to stick the probe into the shallowest groove on the tire, press the shoulders of the probe flat against the tread and then read the result. All gauges should measure both in the 1/32″ United States standard and in millimeters.
What causes tire wear patterns?
Uneven tire wear is usually caused by improper alignment, overinflation, underinflation or a worn out suspension. Regardless of the season, the effects of winter may linger in your tires: Snow, salt, cold or fluctuating temperatures, and the winter potholes that often afflict roadways, can all cause wear and tear.
How to check your tire tread wear?
Penny Test for Tire Tread Wear Measurement. Insert a penny into your tire’s tread groove with Lincoln’s head upside down and facing you.
What is an UTQG treadwear rating?
The UTQG (Uniform Tire Quality Grade) treadwear rating, also known as a treadwear grade, is a number stamped on the tire sidewall that relates to expected tire life. In basic terms, and in the spirit of the concept, the higher the UTQG treadwear rating, the greater the tire life.
What does 99h mean on your tire?
235/55R17 99H- The load index (99) is the tire size’s assigned numerical value used to compare relative load carrying capabilities. The higher the tire’s load index number, the greater its load carrying capacity. 97 = 1,609 pounds 98 = 1,653 pounds
How do you determine tire wear?
Measuring Tire Wear. Tires have wear bars (flat spots)in the tread grooves to visually indicate wear. If the tread is worn down so the wear bars are flush with the surrounding tread, the tire is worn out and needs to be replaced.
