Cause of snapped wheelstud?

sevenhills · 10 October 2022 at 4:06PM

Just curious as to what causes wheel studs to snap.
This is a works vehicle, so no money involved. It has happened four times, in less than twelve months.
It's on a VW Crafter, same wheel every time. They did say that they replaced all the studs when this happens.
It first happened when a tyre fitter was trying to unscrew nuts, now just keeps happening.

Ibrahim5 · 10 October 2022 at 4:45PM

Probably caused by over tightening. There is a specific torque they should be tightened to but they don't bother. Normally the customer pays for their incompetence.

shiraz99 · 10 October 2022 at 4:54PM

I would go to a more competent tyre fitter.

Iceweasel · 11 October 2022 at 7:31AM

They won't snap immediately of course. A decent tyre fitter my well snap a bolt or wheel-stud that was over-tightened by someone else many months before.

Ibrahim5 · 11 October 2022 at 7:55AM

Just keep your car away from all tyre fitters and you will be fine. It doesn't really matter to the customer which tyre fitter wrecked your car.

Richard53 · 11 October 2022 at 10:21AM

I bought tyres through Black Circles and used the fitters they recommended, who I had not used before. They took the wheel nuts off with a rattle gun, but when putting them back asked me what the torque settings were, checked this in a book, and then used a torque wrench and hand pressure to put them back on. I have used them ever since.