The height and width of the rubber that covers your car, as well as the top speed you are permitted to go, are related to the tyre size. Even though the numbers exist on the pavement, few people are familiar with their meaning.

The vehicle will also specify a maximum size of Tyres Borehamwood. It will also be in the handbook, however, specifications could change and you might have aftermarket wheels on a used car. For aftermarket rims and tyres, an acceptable range for tyre pressure is often between 30 and 35 psi.

What Tyre Size Means

Any current car's tyre size pattern will essentially always resemble this pattern, to put it simply: Above is a picture of a typical tyre size, which is 195/55 R16 87V.

The following breakdown applies to all numbers:

195: The tyre's width is mm.

57: Profile of a tyre. By this, we imply the pavement's height as a proportion of its breadth. the height will be 97.5 mm. Low-profile tyres are actually just an upgrade when you want to prioritize pleasant handling because it also implies that there is less padding between the tyre rim and the road.

R: Denotes a radial tyre. Since all road automobiles utilize radial tyres today, it is doubtful that you will see these tyres anywhere other than in historical or specialized applications.

16: Road wheels' diameters are measured in inches.

87: It is the tyre's load rating. The greater the number, the greater the load capacity of each tyre. You may estimate your car's entire weight by multiplying that number by four.

V, Speed rating. The tyre's maximum guaranteed speed in this instance is 149 mph. Below is a

table with the various speed ratings.

Classification of tyres

1. Tread

The tread refers to the area of the tyre that actually makes contact with the ground. It is either a composite/rubber combination or a thicker material that is designed to provide an adequate amount of traction that lasts for a long time.

The many tread patterns that can be seen on tyres are referred to as tread patterns for every tread. The non-uniform lug shape along the circle of the radial tyre is a feature of these tread patterns at specific frequencies that reduces noise levels.

2. Bead

This portion of the tyre makes touch with the vehicle's wheel rim. This bead is often hard with steel wire and constructed of rubber with low ductility and great strength. Additionally, it guarantees that a tubeless tyre seals air tightly and is leak-free. It accomplishes this by pressing firmly up against the two-wheel rims.

3. Sidewall

Typically, a piece connects the tread and bead in a tyre's structure. The walkway is the name of this section of the bridge. This component has a rubber majority but is also flexible and tensilely strong thanks to steel cables or fabric reinforcement.

4. Shoulder

The shoulder refers to the area of the tyre that is at the outermost point of the tread when it changes from a structure to a sidewall.

5. Ply

The rubber may start to stretch and lose its shape due to the pressure inside in the tyre. Because of this, plies (plural: ply) are essentially layers of intact cords.

Tyre categories:

1. Category tyres

The tread of typical automobile tyres typically has symmetrical patterns. These directional and asymmetric tyres need to be fitted correctly to the wheel.

2. Asymmetric tyres

To increase performance, asymmetric tyres have differing tread patterns on both the inner and outer borders of the tread. Large firm tread blocks on the outer edge aid in cornering. 

3. Worn-out tyres

The safest choice when replacing tyres is to choose brand-new tyres. Part-wear tyres can be installed, but they must meet certain requirements. For the delivery of part-wear tyres, the Motor Vehicle Tyres Safety Regulation of 1994 established minimum safety standards.

Part-worn Tyres Elstree is required to have an EC certification mark and a velocity and load capacity index moulded into the sidewall at the point of manufacture, with the exception of retreads. Additionally, all varieties of part-worn tyres must bear a 4 mm high capital "part-worn" mark.