Automobile wheel specifications

Disk standard size:

5,5jx15 ET45,0 5*108x65,0

5,5 (B) - the width of a rim (it is less than width of a profile of the splint on 25-30 %) is measured in inches.

15 (D) - assembly diameter of a disk, is designated in inches (12 ", 13", 14 ", 15", 16 ")

ET45,0 - The departure, is measured in millimeters.

The departure is a distance between the planes one of which passes on a fastening plane, and the second plane halves a disk. The departure can be positive (ET > 0) if the plane of fastening of a disk is displaced outside concerning an axial plane of section of a wheel. The departure can be negative (ET < 0) if the fastening plane is displaced inside concerning an axial plane of section of a wheel. The departure is peer to zero (ET = 0) if the fastening plane coincides with an axial plane of section of a wheel.

5*108 (PCD) - the Landing aperture, quantity of fixing apertures * diameter of a circle of the centers of apertures, is measured in mm.

For example: 4*98 - for wheels of cars, where 4 quantity of fixing apertures on a disk; 98 diameter of a circle of the centers of fixing apertures.

65,0 (DIA) - the Central aperture, diameter of an aperture under a nave, is measured in mm.

How to count PCD:

For a disk with three fixing apertures PCDЗ = Н х 1,155;
For a disk with four fixing apertures РС04 = Н х 1,414; or it is peer to distance center to center two apertures.
For a disk with five fixing apertures PCD5 = Н х 1,701,
Where Н - distance center to center two nearest fixing apertures.

It is necessary to tell that at a choice of a wheel for the splint of certain width it is supposed deviations on width of a rim of a wheel on 0.5-1 inch in comparison with calculated under the formula = In х (0,7.... 0,75), where In - width of a profile of the splint. To reduce width of a rim it is possible on 0.5 inches, to enlarge - by 1 inch. Landing diameter of a rim of a wheel should correspond to assembly diameter of the splint.
PCD should correspond precisely regular for the concrete car. Otherwise it is impossible to achieve exact bracing and wheel centering on a car nave.
DIA - Should correspond to diameter of a prominence on a car nave.