Treadwear and damage

In Vipal Know Your Tyres, March 20231 MinutesBy NZ Trucking magazineApril 7, 2023

Vipal Rubber presents valuable information to help you get the most from your tyres. This month, we look at more examples of treadwear and damage.

Tyres are a significant investment for transport companies, which makes determining the factors that can lead to their demise essential.

Tread lift/separation

Appearance: Tread separated from the protection belt. Belt package is intact.

Probable causes: Adhesion loss between the tread rubber and the tyre casing. Can be caused by tread penetration. Tyre overpressure can aggravate the problem.

Tyre: Remove tyre from service.

Actions: Consult your tyre dealer/retreader to change the tread design to suit the application.

Rib tearing

Appearance: Tear at the base of the main tread grooves. No tread missing.

Probable Causes: Caused by severe localised impacts, hot tyres and sharp turning.

Tyre: Consult your tyre dealer/retreader to repair or retread casing.

Actions: Review driving procedures. Inspect tyres periodically to identify possible tearing at early stage.

Diagonal wear

Appearance: Localised flat spots worn diagonally across the tread, often repeating around the tread circumference.

Probable causes: Runout or out-of-balance, in conjunction with a slow rate of wear. Can also be caused by loose wheel bearings. Aggravated by misalignment.

Tyre: The tyre may be rotated to the outside drive dual position. If wear is excessive, submit to retreader for further options.

Actions: Diagnose cause and correct. Perform periodic maintenance on the vehicle.