Do you know what the complicated forklift tire model markings mean?

Complicated forklift tire model marking, can you know what each number and letter mean?
Let’s take 7.00-12/5.00 as an example, which is arguably the most common way to express forklift tire specifications. Let us explain to you from left to right

-Look at their meaning:

The first number 7 on the left represents the nominal tire cross-sectional width. Simply speaking, it is the tire width. This example is 7 inches wide. The second two numbers 12 represent the tire inner diameter. In this example, the tire inner diameter is 12 inches. The tire inner diameter and the rim diameter need to be exactly the same. ;
The last 5 represents the width of the rim, which is 5 inches wide in this case. It is worth mentioning that the rim width-under normal circumstances, will be 2 inches narrower than the tire width.
The curious student asked again, what does the dash between 7 and 12 mean?

Here are 3 types of identification methods for annotation:
7.00-12/5.00,-a standard high-elasticity solid tire size marking method;
7.00-12/14PR, the appearance of 14PR indicates that this is a pneumatic tire, and 14PR represents the number of layers of the tire;
7.00R12, where the letter R replaces the dash, indicating that this is a radial pneumatic tire.
Why are there so many questions today?

Pneumatic tires have better driving comfort, support higher running speeds and have better shock absorption effects, but there is a risk of puncture;
Press-fit tires, press-fit solid rubber directly on the iron ring, the biggest advantage is economy and zero puncture risk, but it is only suitable for smooth working environment, and the shock absorption effect is poor;
High-elasticity solid tires, products “assembled” from three different rubber formulations, can provide a longer service life, comfortable driving effect and zero puncture risk.
Let’s share what each number means in the other two 4-digit model expressions.
First of all, the first one, 27×10-12/8.00, the old rules, or from left to right, explain the meaning of each number:
The-digit, 27 means that the outer diameter of the tire is 27 inches;
The second digit, 10 represents the nominal tire section width, which can be understood as the tread width, 10 inches;
The third digit, 12 means that the inner diameter of the tire is 12 inches;
The fourth digit, 8 represents the width of the suitable rim, which we also talked about in the previous lesson, the width of the suitable rim is usually the width of the tread minus 2 inches
Inches, so here is 10-2 = 8 inches.
Another model will add “/” after the first number, so the meaning will be changed.
Give another chestnut, 140/55-9/4.00:
The first digit, 140 represents the nominal section width, 140 mm. Note that the unit has changed from inches to millimeters;
The second digit, 55 represents the aspect ratio of the tire, which means that the section height of this tire is 55% of the section width, so we know that the section height of this tire is 140×55%=77mm;
The third digit, 9 means that the inner diameter of the tire is 9 inches;
The fourth digit, 4 represents the width of the suitable rim, 4 inches.