Page 105 - Catalog spare parts BPW HKN

Auto Parts / BPW-EL-HKN 31021701e Page 105

Wheel studs 8

General

Stud alignment
In stud centring, the wheel nave (with countersunk stud
holes) is centred using wheel studs with (spring) centring H
rings.
In the case of spherical studs, the wheel nave is directly
centred on the collar of the wheel studs. K

N

Spigot alignment
In hub centring, the wheel nave is centred using a
centring spigot or ring surfaces on the wheel hub.

Centring bushes may be mounted on two opposing wheel
bolts of each hub in the case of wheels with hub centring.
This is not, however, necessary.
Centring bushes must be mounted on two opposing Wheel nut with rotatable disc Centring bush
wheel bolts of each hub in the case of wheels with mixed
centring.

Alloy wheels
In the case of aluminium wheels, the wheel nave is
centred using a centring cam or ring surfaces on the
wheel hub.
The flange thickness of aluminium wheels
is greater than that of steel wheels, so it is necessary
to check whether the vehicle is equipped for having
aluminium wheels fitted (with stud hole Ø 26), i.e. whether Ø 32
there is a sufficient hub shoulder and longer wheel studs). Ø 26
If not, aluminium wheels with stud hole Ø 32 can be used
in conjunction with shouldered nuts without replacing the
hub or the wheel studs.
(The wheel is not centred by the shouldered nuts).

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