BiXLL wrote: tI am curious as what you toqued them to. The only time I have ever heard of new studs breaking, it was do to them being improperly seated on install, or lug nuts over torqued. As Seth said, if you did both properly, you have a lawsuit without question!
Hey gang, I've been kinda lurking past few months, but felt the need to pipe in with one of my overworded responses. BiXLL is right on the notes of lugnuts overtightened. If all of them separated/sheared off at the hub, then it would lean toward over torque. Couple of questions tho... have you checked the calibration of the torque wrench? We check ours every month at the shop here and have them tested by Team Torque twice a year, along with our tester at the shop. If you live near a Costco and ask the shop manager if he/she could do you a favor and check it for you they have a chance. We take torque wrenches out of service and have them destroyed if they fail and can't be fixed properly. Also make sure when you check the torque, that the socket DOES NOT MOVE. If possible you should check torque with the car up in air and use a wheel chock to keep wheels from turning while torquing (not the e-brake). You do have a valid point that the spacer might have caused the studs to stretch past their "Yield Point", but you would notice that when you checked the torque. A stretched stud would give "soft" feeling when checking torque or the feel like the lugnut just won't set torque easily (not hard to turn, but more like it just keeps turning). 87 ftlbs isn't very much (which is what most Nissan/Infinity cars call for). Most proper spacers should have their own studs and use the vehicle studs to hold the spacer to the hub assembly, that way the same stud isn't being expected to handle expansion of multiple metals with only one torque. Luckily no one got hit by the flying tire (seen many deaths of innocent bystanders from this). Most cases, the people in the car that loses the wheel survive the wreck, but getting hit by a 70 lb tire and wheel at 60mph while you're walking down the street or traveling the other direction, is NEVER a good outcome.
Sorry for the long winded answer, but I deal with this everyday and felt if I can give you some helpful information maybe some newbie somewhere might be safer. If you have any questions about this kinda stuff let me know.
And on a different note... I feel like I'm letting the gang down, but I haven't touched the Vert since October. My old bones just don't like crawling around on the cold concrete floor at home. I'll post if any progress is ever made.....lol