fansonly

So.. my '16 GTS with centerlocks has received a most perplexing recommendation. A dealer has looked at the lugs and thinks they have been over torqued.

What, in simplest terms, does this mean? Would this make the car unsafe for an HPDE?

It sounds like an expensive problem to fix....

Porsche_nuts

re-torque to specifications ?

fansonly

That's what I would have thought, right? But for some reason they suggested they needed replacing?

Porsche_nuts

I would think it would be really hard to over-torque to the point where they caused damage, especially if done by hand. The only thing I can think of is if someone did not use a torque wrench and just used a torque multiplier without a torque wrench and just really had at it. You buy new or used and if new, who other than you would have done anything with the CLs? I'd get a second opinion.

fansonly

Indy shop has done my breaks. Detailer did a clear bra install and took two off to fix some rash.

I'll ask the indy shop what they think about it....

wareaglescott

In general an over torqued nut will deform or stretch things and can definitely lead to failure. Now my knowledge base is not on large CL nuts that have such a high torque setting to begin with but I believe the same general principle should apply.

Look at it this way is it worth the risk on a 16 GTS? The downside could be much more costly. I would follow that recommendation all day long. If it is that costly to you look to the indy shop to compensate you. If you show them the recommendation I would think a good Indy shop would work with you on that.

fansonly

Thoughts on the cost to replace them?

fansonly

Nevermind - found them on suncoast.

991carreradriver

First time I have ever heard of this. How did they know this? Perhaps there was not enough Optimoly paste and the CL lug was seized. I can't believe that enough torque could be applied by hand to cause a CL nut to be damaged (they are not cheap to replace BTW). Is there visible damage to the hub or CL nut? Sounds like an over zealous tech to me. Most cars come from the factory over torqued with their air gun. I would re-torque and move on.

ChrisF

+1 on asking to see evidence of said damage then following up with a second opinion. Sounds like a typical dealer upsell. It's worth confirming though as you are still left with a single point of failure on CL wheels.

96redLT4

I would probably post this on the GT3 board. First I have heard of this as well.

Jim

tstafford

I agree. I'd cross-post this with the 991 GT3 guys and see what they say.

What are they proposing to replace? The bolt? The cone ring? The whole assembly?

991carreradriver

The very information you posted (For 997 CL) recommends some degree of over torquing if driving on the race circuit. I will check my 991 Race Circuit Manual and see what is really going on. I don't remember reading anything that recommends over torquing but I may have and forgot about it. Stay tuned.

chuck911

"A dealer has looked at the lugs and thinks they have been over torqued."

Either "a dealer" has seen evidence of damage, or he is the one we have been searching for all these years, the one who can torque fasteners just by looking at them.
Which makes me curious: does he see in newton-meters? Or foot/lbs?

991carreradriver

Checked all the OEM manuals, the torquing beyond specification is not specified for the 991 CL's. The OEM manuals recommend inspecting all components for cracks or other deformities whenever removed, which has been my practice. Good luck to the OP.