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The Liberty Mutual Solutions site has a really helpful article, with step-by-step instructions, on car maintenance. You can find the full article in the related links below.

Here's how to check a tire tread, which is also in this article:

  1. Examine your tire treads at least monthly.
  2. First, look for bubbles, cracks, worn spots and splits.
  3. Then, check your tread wear either by examining the tire tread wear indicators or by inserting a penny upside down into the grooves on each tire.
  4. If you see the top of Lincoln's head, it's time for new tires.

Although these instructions apply to almost every make and model of a car, we your should still read your owner's manual for your car's specific maintenance requirements. And if something doesn't seem right, it never hurts to seek a second-or even third-opinion!
Inspect them very carefully all around the perimeter and across the tread. Tread should be even all the way across. Worn tread on one side means a mechanical problem in the main ball joint or suspension. Tread can go down to about 1/8 inch in dry weather, however that may be too thin for safety in rainy weather.

Tires have wear bars that go across the tread, if the tread is down to the bars, the tires need replacing. The old way is to use a penny and if the head of lincoln is covered the tires need replacing.
Insert a penny upside down into the groove. If some of Lincoln's head is buried,

you have roughly 3/32s of an inch of remaining tread which is legal in most states.

However, a tire with that much wear isn't safe in the rain, where you need deep channels to carry away water to avoid hydroplaning.

New tires generally start out at a tread depth of 10 to 11/32s of an inch.

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7y ago

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Related Questions

How do you measure the tread depth for motorcycle tires?

You can use a penny for that. Put in between the threads then mark and measure the depth on the penny.


Where should you measure tire tread depth?

You should measure tire tread depth in several locations across the tire to get an accurate assessment of wear. The best places are the grooves in the tire tread, specifically in the center, on the inside, and on the outside edges. Use a tread depth gauge or a penny to check; placing the penny with Lincoln's head down into the groove will help you determine if the tread is deep enough. Generally, a tread depth of 2/32 of an inch or less indicates that the tire needs to be replaced.


How do you tell when i need new tires?

I inspect the tire and measure the tread depth.


How would you measure the tread depth of a tyre to ensure that it meet with legal requirements for a car?

Purchase a tread depth gauge from your local auto parts store. It will measure in 1/32" increments. Take measurements at the inside, middle and outside of tire treads.


What is 632 Tread Depth?

6/32 inch. it is a measurement of tread depth.


What coin would be useful to measure an object?

A penny can be used to measure for safe tread depth on your car tires. Hold the penny upside-down in a tread groove. If the top of Lincoln's head is visible above the tread wall, the tires are completely worn out, and need to be replaced, pronto.


What is the depth of tread on a tire?

It is the depth of the grooves in the tyre.


What is the minimum legal tread depth for a road tire in the UK?

The minimum tyre tread depth in the UK is 1.6mm.


What is the standard method for determining stair tread measurement?

The standard method for determining stair tread measurement is to measure the horizontal depth of the tread, typically from the front edge to the back edge, and ensure it meets building codes and safety standards.


How would you use the height of the risers and the depth of the treads to measure the slope of a staircase?

To measure the slope of a staircase, you can use the formula: Slope = Rise / Run. The rise is the height of the riser, and the run is the depth of the tread. Divide the height of the riser by the depth of the tread to calculate the slope of the staircase.


What is the standard tread depth for tires and why is it important to maintain it?

The standard tread depth for tires is 2/32 of an inch. It is important to maintain this depth because adequate tread depth helps tires grip the road, improving traction and handling. Insufficient tread depth can lead to reduced performance, increased risk of hydroplaning, and decreased braking ability, posing a safety hazard.


What is the safest tread depth of a tire?

That depth present on a new tyre.