Whilst removing the security stud from my front wheels to fit new tyres
the security socket sheered. The
mechanic was using a manual torque wrench not an air wrench. I estimate he had to apply apply 400 N
m. The spec is 110 Nm and I tested other studs at 150 (the max on my torque wrench) My Volvo
dealer is going to chisel off the security studs.
Question: what is the likelihood of damage to the alloys from either over
torquing (how much causes
damages?) and by the shock of chiselling off the security studs. Could this cause hair line cracks in the
alloys that will only become obvious later?
I highly doubt any damage was done to the rim. At the worst maybe the paint
but I doubt even that. I
would be more worried about the rotors, and other misc parts.
... posted by Tony Giverin on Thursday, 8 March 2001, at 6:48 p.m. ...in response to "over tightened wheel studs" posted by david fairhurst.
I agree with Charles, the importance of torquing to OEM specs is to prevent damge (warping) to the
rotors. Your rims will be fine...just don't scratch them in the attempt to loosen the studs.
Tony G, '94 850GLT, "82 240DL (mint) July '99 "Rolling" cover
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