There are two kinds of tires for large concrete mixer, which are nylon tyres, and the written words are "oblique tyres", the code is "d" and "one" represents nylon tire; the other is steel wire tire, and the written language is "radial tire", and the international code is "R". Generally, steel wire tyres are used in concrete mixer. For example, a car tire says: p245/45 R18 96V, of which
245表现轮胎的断面宽度为245mm，胎面宽度普通在145-285之间；
245 indicates that the width of the tire section is 245mm, and the tread width is generally 145-285;
45表现轮胎的扁平率为45%（扁平率=轮胎高度/轮胎宽度），普通轮胎的扁平比在30%-80%之间；
45 indicates that the flat rate of the tire is 45% (flat rate = tire height / tire width), and the flat ratio of general tires is between 30% and 80%;
R表现该轮胎为钢丝胎；
R means that the tire is a steel wire tire;
18表现钢圈的规范直径为18英寸（1英寸=25.4mm），钢圈直径即轮辋外径；
18 means the standard diameter of the steel ring is 18 inches (1 inch = 25.4mm), and the diameter of the steel ring is the outer diameter of the rim;
96表现载重指数；
96 is the load index;
V便是该轮胎标记形如：6.00-12，这表现它不是钢丝胎，而是尼龙胎。这类轮胎普通利用在局部初级的越野车和重型货车上。此中，轮胎的扁平率越低，轮胎行驶越安稳，操控性越强，但乘坐感受路天籁弹性缺乏，振动较大些；
V is the tire marking shape such as 6.00-12, which means it is not a steel tire, but a nylon tire. This kind of tire is generally used in some low-grade off-road vehicles and heavy trucks. Among them, the lower the flat rate of the tire, the more stable the tire driving and the stronger the handling, but the ride feels the road sounds elastic is insufficient and the vibration is larger;
车辆轮胎速率代号最高时速表（km/h）：
Maximum speed meter of vehicle tire speed code (km/h):
M-130、N-140、P-150、Q-160、Q-170、S-180、T-190、U-200、H-210、V-240、W-270、Y-300；
M-130、N-140、P-150、Q-160、Q-170、S-180、T-190、U-200、H-210、V-240、W-270、Y-300；
车辆轮胎载重代号限额表：
Limit table of vehicle tire load code:
80-450kg、81-462kg、82-475kg、83-487kg、84-500kg、85-515kg、86-530kg、87-545kg、88-560kg、9-580kg、90-600kg。
80-450kg、81-462kg、82-475kg、83-487kg、84-500kg、85-515kg、86-530kg、87-545kg、88-560kg、9-580kg、90-600kg。
大型混凝土搅拌机，有的轮胎还含有其余的字母或标记，是有特别寄义的：“X”表现高压胎；“C”表现增强型；“B表现斜交胎”；“一”表现高压胎。M、S别离表现英文Mud和Snow的缩写，它表现这类轮胎合适于冰雪和泥泞的道路上利用。某些轮胎的胎壁上标有箭头或OUTER SIDE字样，它表现轮胎的动弹标的目的。若是胎壁上画有一个细雨伞标记，就标明这类轮胎合适于在雨天或湿滑路面下行驶。DOT标记表现这类轮胎经由进程了美国和加拿大某某运输局部的认证。大型混凝土搅拌机固然这些常识不是太热点，可是在用车的进程中仍是能起到大感化的。
Large concrete mixer, some tires also contain other letters or symbols, which have special meanings: "X" means high pressure tire; "C" refers to reinforced type; B refers to diagonal tire "; and" 1 "refers to low pressure tire. M. S is the abbreviation for mud and snow, which means that the tire is suitable for use on snow and muddy roads. Some tires have arrows or outer side on the wall, which indicates the direction of rotation of the tires. If a small umbrella sign is painted on the tyre wall, it indicates that the tire is suitable for driving on rainy days or slippery road. Dot marks indicate that the tire has passed the certification of a certain transportation department in the United States and Canada. Although these knowledge is not too popular, large concrete mixer can play a significant role in the process of using vehicles.