Solve questions, read the code number of motorcycle tires and bicycle tires, how to get the tires you want?

Reading the various numbers on motorcycle tires

If you are the one who is looking for information about motorcycle tires and wondering what is the code on that tire? How is it important?

The tire code is indicated on the sidewall. To choose the tires of motorcycle, it is the best to study the code list carefully for smooth driving performance. Because the code on that motorcycle tire will tell us the width and wheel size. This will help us to choose the right tires for motorcycle. At present, there are two types of numerical readings on motorcycle tires. That is “the inch scale” and “the metric scale”.

Inch scale

The inch section is a code on the motorcycle tire. That are often found on old motorcycles tire and small motorcycles which the first set of numbers will indicate the width of the tread. The next number is a number that indicates the size of the rims. M / C indicates that this tire is a motorcycle tire. And the last set of numbers is the tire load index and speed index that the tire can support.
(Can be compared from the table below)

2.50-17 M/C 43P CM35

2.50 : The width of the tire in inches which has width 2.50 inches.

17 : A Diameter of the rim in inches

M/C : Tire designed especially for motorcycles.

43 : The maximum weight the tire can carry which it can support a weight of 155 kg (compared to the LOAD INDEX table)

P : The maximum speed that this tire can handle which the maximum speed is 150 kilometers per hour. (Compared with the SPEED INDEX table)

CM35 : A tire pattern code of motorcycles.

Metric scale

มาตราเมตริกเป็นการอ่านรหัสบนยางนอกรถมอเตอร์ไซค์ ที่มักจะพบได้ในรถมอเตอร์ไซค์รุ่นใหม่ และเป็นระบบที่สามารถบอกรายละเอียดได้อย่างชัดเจน ไม่ว่าจะเป็นความกว้างของหน้ายางนอก และเปอร์เซนต์ความสูงของแก้ม , เส้นผ่านศุนย์กลางวงล้อ , อัตราการรับน้ำหนักสูงสุดของยาง ไปจนถึงอัตราความเร็วสูงสุดที่ยางรับได้

The code meaning on the wheels

80/90-17 M/C 50P CM-545

80 : The width in millimeters which this tire has 80 mm.

90 : The height of the sidewall, measured in percentage of the tire width.

17 : It’s a diameter of the rim in inches.

M/C : Tire designed especially for motorcycles.

50 : The maximum weight the tire can bear which it can support a weight of 190 kg (compared to the LOAD INDEX table)

P : The maximum speed that this tire can handle which the maximum speed is 150 kilometers per hour. (Compared with the SPEED INDEX table)

CM545 : A tire pattern code of motorcycles.

When choosing a motorcycle tire, should consider carefully about the rim size, width of the tire, sidewall height and the way you use your motorcycle. To get the tires that meet your requirement and can be used effectively can help to prevent any accidents that may occur from riding a motorcycle as well.

Readings of various numbers on bicycle tires.

At present, there are 3 methods for reading:
1. French
2. Inch Marking
3. แบบ ETRTO (The European Tyre and Rim Technical Organisation)

Type 1 French (in millimeters)

700 x 35c

700 : The outer tire diameter
35 : The width of tire
The INFLATE TO MIN.50 MAX.75 P.S.I is the minimum and maximum pressure that a tire can support.
In this example, the minimum pressure is 50 pounds and the maximum is 75 pounds.

Type 2 Inch Marking (in inches)

24 x 1.75

24 : The outer tire diameter
1.75 : The width of tire
The INFLATE TO MIN.35 MAX.65 P.S.I is the minimum and maximum pressure that a tire can accept.
In the example, the minimum is 35 pounds and the maximum is 65 pounds.

Type 3 ETRTO (in millimeters)

(35-622)

ETRTO is the new standard and now it becomes a standard for bicycle tires, the ETRTO value is placed in brackets and placed at the end of French or Inch Marking
For example 700 x 35C (35-622)
35 : The width of tire
622 : The outer tire diameter