Wheel studs on wheel spacers broke off into Lugs nuts
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Looking at it from an engineers standpoint...its kind of hard to have 4 out of 5 studs fail at one time without any other forces or human error involved. Even over tightening would damage the the lug nut or wheel. Unless somehow you twisted the stud thus weakening it.
Generally if you have all the the lugs tighten down there would be little force acting on the studs except the normal force from the lug nut tightening the wheel to the hub. The hub and suspension absorb the forces from driving and the road.
I've tighten wheels with torque wrenches, impact guns, t-bars, and stock lug wrenches with long pipes attached and have never done that kind of damage on cars i've worked on. The only time i've ever snapped a stud is when the thread was stripped and it would not turn.
I'd say pop those aftermarket studs out and get some reliable OEM studs. The OEM ones are heat treated and hardened steel.
Generally if you have all the the lugs tighten down there would be little force acting on the studs except the normal force from the lug nut tightening the wheel to the hub. The hub and suspension absorb the forces from driving and the road.
I've tighten wheels with torque wrenches, impact guns, t-bars, and stock lug wrenches with long pipes attached and have never done that kind of damage on cars i've worked on. The only time i've ever snapped a stud is when the thread was stripped and it would not turn.
I'd say pop those aftermarket studs out and get some reliable OEM studs. The OEM ones are heat treated and hardened steel.
#21
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An impact gun will put as much as 250+ft/lbs onto the stud depending on the setting. With a torque wrench it's only supposed to be torqued to barely 80~85 ft/lbs. I'd replace all of your studs and lugs as they are most likely compromised from the impact gun. Brakes will warp as well from over torqued lugs.
#23
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You are blindly testing the tensile strength of the lugs and studs. Metal will only elongate to a certain extent before fracture takes place. How much you've elongated the metal is unknown as you don't use a torque wrench to measure the amount of force applied to the metal itself. 85 ft/lbs is not very much torque.
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You should get a spacer that have a center hub and use hubcentric rings for your wheels. This is the safest way to run spacers, otherwise you are putting all the stress on the stud. Hitting a pot hole will knock off those studs.
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#28
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I just left it as is...as annoying as that red light that kept telling me that my tires are low, I just ignored it.
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My mistake, I used the impact gun to quickly screw the lugs in but used a torque wrench to torque the lugs.