4.2 Wheels

Information Method of Inspection Reason for rejection
Spare wheels are not included in the inspection, but if a defect is seen the owner should be advised.

In considering whether the original strength of a wheel has been significantly reduced the tester must decide if the wheel is rendered unsafe .

The maximum allowable rim distortion limits are as follows

Lateral (ie run out or buckling)
a. For steel rims: 4mm
b. For aluminium alloy rims: 2mm (cast or fabricated)

Eccentricity:
a. For all types of rim: 3mm

Measurements should be taken from a machined surface in the case of cast aluminium alloy rims.

This inspection also applies to the wheel attached to the side car.

Particular attention should be paid when assessing stainless steel spokes
for cracks

1. Examine the condition of the wheels, (see information column)


2. Spin the wheels and look for buckling and eccentricity.


3. Check the security of the wheels.
1.a. deliberate modification, inadequate repair, excessive corrosion, damage or fracture of a road wheel which significantly reduces the original strength (see information column)

b. a spoke which is missing, cracked, excessively loose bent or corroded.

c. loose or missing rivets or bolts in built-up wheels

2. An excessively distorted or eccentric bead rim. (see information column).

3.
a. loose or missing wheel nuts, studs or bolts

b. an insecure wheel.
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