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Wire Wheel HYDROGEN EMBRITTLEMENT - WL-121

On February 3, 2006, John H in Wisconsin wrote:
72 spoke wire wheel "I have 72 spoke chrome Dunlaps on our A. After several years they started to break at the bend at the hub end. They are not properly processed after chroming and are too brittle. I buy at least a half dozen new spokes each year."

This is a very short note, but demands a stage of its own. Given a choice, avoid chrome over steel spokes in wire wheels, as hydrogen embrittlement is a problem. Get either stainless steel spokes or chrome over stainless. British Wire Wheel offers a number of options for stainless or chrome over stainless spokes. They also offer a tubless wire wheel option with sealed rims (which I highly recommend as I hate tubes).

Side note here: I will repeat this many times. All original MGA wheels were painted. Chrome wire wheels have always been aftermarket accesory parts. That said, they are period correct aftermarket accessories, and have been gaining popularity in more recent times. Scoring points or losing points in a car show would depend on the judging style. Popular vote or exhibitor's choice will often favor over-restored cars with chrome wire wheels and gloss black chassis paint. I have no idea how few MGA would ever be entered in a true concours show where points may be deducted for chrome wheels.

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