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Safe Centering

  • Yellow


for added comfort and safety, centering rings for truck wheels.

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Primary Functions

  • Centers wheels
  • Increases comfort
  • Protects bolts
  • Minimizes risk of wheel unloading
  • Reduces the risk of bolting accidents
  • Protects bolt holes. Will not oval
  • More even tire wear
  • Easy to mount
  • Simplifies installation of wheels
  • Simplifies dismantling
  • Can be used multiple times
  • Non-corrosive

Installation Instructions

  • Clean the bolts and bolt holes
  • Install Safe Centering on all nuts
  • Install the wheels
  • Tighten the nuts
  • Tighten after 50 km

Dimensions of different wheel types and bolt holes

Singelmont. Dubbelmont.
Steel Wheels 26 mm 22,225,812 22,225,819
Steel Wheels 26.5mm 22,226,312 22,226,319
Alcoafälgar 22,226,319 22,226,319 26 mm (2 pcs.)
Alcoafälgar 32 mm 22,232,316 22,232,329
Safe Centering used Alcofälgar with 32 mm hole in connection with Alcoa's original bolts.

The product is made ​​of hard, tough and heat resistant plastic that is reusable

Patents: U.S. Patent No. 0100333-4


This product has applications in various sectors.


Examples of applications in the field


Sizes Available

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Checkpoints® are sized by the corresponding measurement (in millimetres) across the flats of the hexagonal nut fitting. Current sizes available* include (in mm):

17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 40, 41, 44, 46, 50

*Available stock levels vary for each size and colour in accordance with demand for each size. For further information or questions please contact us.

Convert your measurements with our simple calculator.


Standard Colours

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The standard colours for Checkpoint® are Fluoro Yellow and Red, however subject to stock and/or minimum order quantity, the following are also available*:

Blue, Black, Olive Grey, Green, Orange, Silver Grey, White and Solid Yellow.

*Other colours can be made available subject to a high minimum order quantity.

Olive grey
Silver grey
Solid yellow

Recommended Fitting

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It is recommended that the initial fitting out of the vehicle is done in the course of scheduled maintenance or during a roadworthiness inspection or when a wheel nut torque check is scheduled.

The wheel nuts must be torqued to the recommended value before the Checkpoints® are fitted.

The Checkpoint® should be a tight slide fit onto the wheel nut without the need for tools or any other assistance. This is also the case when there is a need to remove them.

Fit the Checkpoint® so that the raised rim of the collar is outermost from the wheel nut washer, or the profile of the wheel. This eases removal by giving a finger purchase on the collar rim of the Checkpoint® without damage.

The layout pattern used for the Checkpoint® on the wheel is of personal choice; it is often dictated by the wheel rim size and profile, and/or the PCD of the stud.

The most commonly used patterns are:

Point to point
Elephant file

Any patterned configuration may be used so long as the movement away from the set pattern of one or more of the Checkpoint® will be clearly visible on inspection.

Safe Configuration

Initial point-to-point configuration

Unsafe Configuration

DANGER - Wheel nuts have loosened!

Important Reminder

When arranging the pattern you will use as the layout for the Checkpoint® on the wheel, that should a wheel nut loosen off, the Checkpoint® pointer needs room to move to indicate that the wheel nut has moved; this is normally anti clockwise. The length of the pointer should not therefore be aligned against the wheel rim profile, which could restrict movement.


Material Grade

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Checkpoint® is manufactured from Polyethylene. This special grade is suitable for heavy-duty applications such as high load urban duty cycle service or where full axle loading is the norm.

Checkpoint® is designed to distort and melt at a vehicle hub/stud tempreture of 125 degrees centigrade. In addition for further severe operating conditions Checkpoint® have a high temp product with a distort/melt point of 135 degrees centigrade.

The material used is a virgin polymer and is UV stabilised. It is therefore dimensionally stable. The polymer does not degrade in sunlight. Checkpoint® can be cleaned using any of the available vehicle cleaning agents, detergent solutions or paraffins.

Checkpoint® are not attacked by road salts or petrochemicals. The pointer being large, it is highly visible even when coated with road or operational grime.