18 inch or 19 inch wheel hub, which is practical?

Choosing the right wheel hub is the most important thing. 19 inch wheel hub is more atmospheric than 18 inch wheel hub, but the tire will be thinner, more maneuverable, and the shock absorption will be weakened. 18 inch will be more comfortable.

The wheel hub sizes of automobile tires 18 "and 19" are different, that is, 18 "tires are suitable for 18" wheels, while 19 "tires are suitable for 19" wheels.

Take the tire number 2 15/70R 18 as an example, where 2 15 represents the tire section width, that is, the tire width is 215 mm; ; 70 is the flattening ratio, that is, the ratio of tire sidewall height to tire section width is 70%; R represents that the tire is radial tire, and 18 is the outer diameter of the rim, which means that the applicable hub of the tire is 18 inch.

In general, 19-inch wheel hub has a lower flatness than 18-inch wheel hub under two specifications with the same or similar outer diameters, so 19-inch wheel hub will bring stronger road feeling and maneuverability.

18 inch wheel hub will have relatively better comfort. In addition, the large wheel hub may need to increase the tire width accordingly, which will bring better stability, but it may also bring greater tire noise and fuel consumption, so the large wheel hub has advantages and disadvantages.

Hub development

In the past, the hub bearings of automobiles were mostly paired with single row tapered rollers or ball bearings. With the development of science and technology, automobile hub units have been widely used in automobiles. The application scope and usage of hub bearing unit are increasing day by day, and it has developed to the third generation: the first generation consists of double-row angular contact bearings.

The second generation has a flange to fix the bearing on the outer raceway, which can simply cover the bearing on the axle and fix it with nuts. It makes the maintenance of the car easy. The third generation hub bearing unit adopts the cooperation of bearing unit and anti-lock braking system. The hub unit is designed with an inner flange and an outer flange. The inner flange is fixed on the transmission shaft by bolts, and the outer flange installs the whole bearing together.