What depth are tread wear indicators?
1.6 mm
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.
How do I know if my tyres have sufficient tread depth?
The ’20p test’ is a quick and easy way to find out if your tyres are under the minimum legal tread depth of 1.6mm. Simply take a 20p coin and place it into the main tread groove of your tyre. If the outer band of the 20p is not visible and it slots within the groove, then your tread is above the legal limit.
What do tread wear indicators indicate?
Tread wear indicator bars are moulded into the tread grooves at regular intervals around the tyre to indicate when a tyre is worn to its limit of safety. The minimum legal tread depth is 1.5 mm across the width of the tread. When the tyre is worn to the legal limit the bars will be flush with the surface of the tread.
How many miles will 3mm tread last?
When we consider all the variables, the shortest distance the 3mm will last ranges between 10000-20000 miles. This is the minimum mile coverage, meaning that it can exceed the specifications. Try to replace the tires as much as possible before it reaches 1.6mm.
How many miles will 1 mm of tread last?
As a rough guide, a millimeter (1mm) of tyre tread lasts from approximately 1,000 – 4,000 miles dependent upon driving style, road and weather conditions and tyre rubber compound.
At what depth do you replace tires?
2/32”
The U.S. Department of Transportation recommends replacing tires when they reach 2/32”, and many states legally require tires to be replaced at this depth. The idea of the penny test is to check whether you’ve hit the 2/32” threshold. Here’s how it works: Place a penny between the tread ribs on your tire.
How can you tell if tires are worn?
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.
Should I change my tyres at 3mm?
One of the key conclusions of the research was: “Replace your tyres soon after the tread depth reaches 3mm. Always change them once the tread has worn down to 2mm or less at any point.” Several vehicle manufacturers also recommend 3mm as the standard changeover point.
How long will a 1mm tread last?
What is the minimum safe tread depth?
Safe Tire Tread in United States. In general, all vehicles are required to have tires in proper and safe condition with a minimum tread depth of 2/32 of an inch.
What is the best tire tread depth?
Used tires tread can be up to 90%, but the average is 6-8/32”. Tires in good condition should have a minimum of 6/32” to be useful, or 4/32” if the tire is 13-14”. The average legal minimum tread depth is 2/32”, but driving becomes unsafe with such a tread.
How to measure tire tread depth?
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 the minimum tread depth for a tire?
A typical tire starts out with a tread depth of around 10/32″. If a tire’s tread is worn down to 2/32″, it could put you in a dangerous situation and must be replaced immediately. In fact, 2/32″ is the legal minimum tread depth in most states and any tires worn more than that are illegal.