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Air Pressure Loss With Factory Aluminum Wheels

BlackZ71Silverado

By BlackZ71Silverado
in Tires, Wheels & TPMS

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BlackZ71Silverado Senior Enthusiast

BlackZ71Silverado

Posted
Posted

Just wanted to give everyone here a heads up as to what we have been experiencing at the 4x4 shop I work for in my spare time.

The issue is with Factory Aluminum wheels, with the clear coat type of coating (not sure of the proper name).

 

We have had several customers over the past few months calling and bringing their trucks in due to low tire pressures. Their tires have been leaking air over a few days from 40psi, all the way down to 25psi in a matter of 2 days.

 

It was discovered that the tires were leaking around the bead and it is caused by the blistering of the clear coating on the factory wheels. This is being fixed by removing the tire from the wheel, and sanding the area where the clear coat has started blistering and is affecting the seal of the tire to the wheel. He is also applying some sort of 'special' bead sealer that is ordered through GM. Not sure which brand it is because it comes in an unlabeled container but GM said they are well aware of the issue and it should not happen with the current model of trucks. They claim that the 2014-2016 aluminum wheels use a different coating than what has been used in the past.

 

If you have a GMT-900 you may experience this issue at some point in time. My 2008 is one of the vehicles experiencing air pressure loss on three of the four aluminum wheels. After it was sanded down and had the coating applied, it's been holding air as it should.

 

If anybody here is having an issue where you are noticing a loss in air pressure, this is probably a good place to start looking to find the problem.

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