How to measure the size of car tires?

How to measure the size of car tires?tire depth caliper

1. Use a metal tape measure to wrap around the tire along the centerline of the crown or near the highest point of the centerline to measure the outer circumference. Select the sidewall parts without signs, decorative lines and anti-scratch lines, and use vernier calipers or calipers to measure the section width of four points at about four equal parts of the tire circumference. Calculate the data at the end. I hope the above is helpful to you, thank you.
2. The most important thing to measure tire size is to measure the overall width, partial width, height, tread width, partial outer diameter and aspect ratio. These numbers are marked after the letters. To make the whole measurement accurate, the key is to correctly inflate the tire. Likewise, tires should be fully inflated and mounted on wheels.
3. Hello! Generally, a large caliper is used to measure the section width of a vehicle tire. To measure the outer diameter of the tire, a steel tape is used. If you need to measure the depth of the groove, there is a groove depth gauge, and a more professional one is the crown arc radius. The basic size, such as a ruler, is enough.
4. The tire size is printed on the sidewall of the tire. There are two ways to check the size and size, such as 34*7 or 50-20. The former is a high pressure tire and the latter is a low pressure tire.
5. The size and size of the car tire can be viewed from the data on the side of the tire.

How to measure tire tread depth?

With a tire pattern depth gauge, its tip can be inserted into several main grooves of the same cross section of the tire tread to measure its depth, and a set of values can be obtained from which the average number can be obtained. If you often drive at high speed and measure the remaining groove depth of the tire is less than 3 mm, it is recommended to replace it as soon as possible.

Check the information By consulting the relevant information, you can find that you can buy a tire tread depth gauge, and then measure the tire tread according to the content in the manual.

Use a vernier caliper to measure the depth end (end), and insert the measuring rod head into the groove of the tire tread to measure and read the depth of the tire tread.

First, insert the tip of the depth gauge into several main grooves of the same cross-section of the tire tread, measure its depth, obtain a set of values, and obtain the average number from them.

Tires have tire tread wear indicators, these slightly raised tread wear indicators are located at the bottom of the tread grooves and have a height of 6 mm (the legal minimum groove depth).

The tire tread depth standard greater than 5mm is in good condition, while 5~5mm is normal and less than 5mm is in need of replacement. When the limit value is 6mm, it must be replaced.

What is the reading method of the tire depth gauge?

1. Plasticine or plasticine method (convenient) 01 Clean the tire to be measured, and knead the plasticine or plasticine until soft. It can be pressed into the tread of the tire. 02 Press the plasticine into the tire gap, extend into several main grooves of the same cross section of the tire tread, measure its depth, and record.
2. Function: If you have a tire pattern depth gauge in your hand, you can insert its tip into several main grooves of the same cross section of the tire tread to measure its depth to get a set of values and get an average from it. If you often drive at high speed and measure the remaining groove depth of the tire is less than 3 mm, it is recommended to replace it as soon as possible.
3. How to use the depth gauge When using the thin-rod depth gauge for the first time, please open the battery compartment, put the battery in, and put the positive pole “+” outward. If the number on the display screen does not move, please take out the battery and put it in again after a minute. That’s it. Loosen the locking screw, press the switch key to start the power, check whether the display screen and each key work abnormally.
4. Find out the position where the vernier ruler is “directly facing” the scale line of the main scale, and read the number of small divisions (n) from the alignment line to the zero scale line on the vernier ruler (do not estimate); read the measurement according to the reading formula value.
5. The method of checking the depth of the tire pattern is: you can choose to use a caliper to measure the depth of the tire, and you can insert the tip of the caliper into several main patterns of the same cross section of the tire tread to detect the depth. Because all tires are designed with tread pattern wear indicator lines.
6. The application of the depth mark is very simple. As long as you learn to read the depth mark on the tire tread, you can grasp the wear degree of the tire in time. Each tire tread is marked with numbers and letters. Generally speaking, the numbers represent the tread depth of the tire, and the letters represent the use and performance of the tire.