Where do you measure tread depth?

Tread depth is a vertical measurement from the top of the tire’s rubber to the bottom of the tire’s deepest grooves. As you drive on your tires, the rubber that makes up the tread — and the very thing that gives you traction — wears down.

What is a good tire tread depth?

6/32

Is the penny test for tires accurate?

For years, motorists have been told the “penny test” is an accurate indicator of whether or not you need new tires. The test is conducted by sticking a penny head down in a tire tread; if you see all of Lincoln’s head, then you should change the tires. The one with an eighth of an inch of tread stopped in 300 feet.

How many miles is 1/32 of tread?

Depending on the tread compound, the tread will wear down about 1/32 inch for every 5,000 to 8,500 miles of normal driving. Consequently, a new set of tires may last 40,000 to 70,000 miles on average. As the tread wears down, the depth of the grooves between the treads becomes shallower.

When checking the tread depth of a tire where should you insert the penny on the tire quizlet?

You just studied 5 terms!…

Take a penny and hold Lincoln’s body between your thumb and forefinger.
Put Lincoln’s head into one of the grooves of the tire where the tread is the lowest.
If part of Lincoln’s head is covered, you’re driving with a safe amount. If your tread is below that, your traction is greatly reduced.

How long do the average tires last?

about four to five years

When should tire tread depth be replaced?

New tires typically come with 10/32” or 11/32” tread depths, and some truck, SUV and winter tires may have deeper tread depths than other models. 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.

What is the minimum legal tread depth?

1.6 mm

How many 32nds is 4mm?

SAE to Metric Conversion Chart

SAE	Metric	Inch
5/32″		0.156
	4mm	0.157
	4.5mm	0.177
3/16″		0.188

Is 4mm the same as 5 32?

4mm = 5/32 inch (= a bit over 1/8 inch) 5mm = just over 3/16 inch.

What does 19/32 convert to in inches?

Decimal equivalents of eights, sixteenths, thirty-seconds and sixty-fourths of an inch

Inches
fractional	decimal
19/32	0.59375
21/32	0.65625
23/32	0.71875

How many mm are in 32nds?

FAQs on inch to millimeters To transform 0.03125 inch into millimeter, you just need to multiply the quantity in inches by the conversion factor, 0.001. So, 0.03125 inch in millimeters = 0.03125 times 0.001 = 0.79375 millimeter, exactly.

How many mm is 6 32 inches?

Tire Tread Depth Conversion /32″, Inch, MM

Fraction /32″s	Inch	MM
6/32″	0.188	4.76
7/32″	0.219	5.56
8/32″	0.250	6.35
9/32″	0.281	7.14

What size is 10 mm in inches?

MM	Approximate Size In Inches	Exact Size In Inches
10mm	Little over 3/8 Inch	0.39370 Inches
11mm	7/16 Inch	0.43307 Inches
12mm	Just short of 1/2 Inch	0.47244 Inches
13mm	Little over 1/2 Inch	0.51181 Inches