Spotting the Signs of a Cracked Alloy Wheel

How Do You Know If a Wheel Is Cracked?

When it comes to identifying a cracked alloy wheel, the first signs are often felt rather than seen. Persistent loss of tyre pressure, unusual vibrations while driving, and noticeable handling issues can all indicate a crack. These symptoms usually occur because the wheel can no longer maintain a proper seal or has become structurally compromised.

Why Does a Cracked Wheel Cause Vibrations?

Vibrations are a common sign of a cracked wheel because the wheel’s balance is disrupted. In our Manchester Alloys workshop, we often find that even a small crack can throw off the wheel’s balance, leading to vibrations felt through the steering wheel. A Volkswagen Golf owner recently came to us complaining of a persistent vibration. Upon inspection, we discovered a hairline crack on the inner rim. After replacing the wheel, the customer reported a smooth and vibration-free drive.

Can You See a Crack on the Wheel?

Visible cracks are not always apparent, especially if they are on the inner side of the wheel or obscured by brake dust. However, close inspection can sometimes reveal hairline fractures, particularly around the spokes or rim edge. We recommend regularly checking your wheels, especially after hitting a pothole or kerb. A Toyota Yaris owner came to us after noticing a slow air leak. After cleaning the wheel, we found a crack on the inner barrel, which was not visible at first glance. This case emphasises the importance of visual inspections.

What Causes Alloy Wheels to Crack?

Alloy wheels can crack due to several factors, including impact damage from potholes or kerbs, stress from improper fitment, or manufacturing defects. At Manchester Alloys, we understand that the type of alloy matters. Cast wheels, for instance, are more prone to cracking than forged wheels due to their manufacturing process. A Ford Focus owner recently discovered this the hard way after hitting a deep pothole. The cast wheel cracked, and we replaced the set with a set of Hybrid Forged Romac wheels, offering better durability.

Can a Cracked Wheel Be Repaired?

Repairing a cracked wheel is sometimes possible but depends on the location and size of the crack. Our policy at Manchester Alloys is to assess each wheel individually. Some cracks, particularly those on the outer rim, can be welded. However, if the crack is too extensive, or if the wheel has been previously repaired, replacement is often the safest option. We once had a Vauxhall Astra in the shop with a crack that had been previously welded and failed again due to casting porosity, highlighting why we often recommend replacement over repair for safety.

Reviewed by

Casey Jones

Forged wheel and performance car specialist · 6 years hands-on

First-in-the-world fitments on the new-shape Alfa Romeo Giulia Quadrifoglio, BMW XM, and Citroen Ami. Thousands of wheels and tyres personally sold and physically fitted across performance, luxury, and classic vehicles. Every article on this site is reviewed against real workshop experience.