Because there is only one tire in front of the cart, the plane of the steel ring is outside, which does not affect the width and steering. ? And there are two tires (load) at the back, with the plane of the inner steel ring outside and the plane of the outer steel ring inside, so that the two tires can be fixed better without affecting the width of the car and achieving the best load effect. You can take a closer look. If the back tire is removed, it will be almost the same as the front tire. The wheel hub is a circular wheel hub seen after the steel ring and tire are put down, which is used to fix the tire screws and transmit power.
In addition, the wheel quality of some large trucks is also different. 12.00-20- 18PR Weight: 55-60kg12.00r2018pr Weight: 72-77kg10.00-20-/kloc-0.
PR means grade. Layer refers to the nominal ply number of tire rubber layer, which is not completely consistent with the actual ply number, and is an important indicator of tire strength. Grades are marked in Chinese, such as 12; Sign in English, such as ""14p. R ",namely 14 layer pole.
Bias tire and radial tire are commonly used for truck tires, the former is mostly nylon cord tire and the latter is mostly steel cord tire; At present, except for engineering or special circumstances, radial tires are basically used.
The tires of large trucks are generally divided into the following sizes: 12.00-20- 18PR.
12.00R20 .
10.00-20- 18PR .
10.00R20- 18PR .