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Old 07-11-2009, 12:40 PM   #1
Scooby Newbie
Member#: 215095
Join Date: Jun 2009
Default McGard Splinedrives vs Kics R40

Hey guys,

Just wanted your opinions on these two sets of lug nuts as I'm trying to make a decision. My car does see the track occasionally so I ruled out all the aluminum lug nuts out there (especially since my wheels come on and off a lot).

Here are the details for each that I have found so far, please feel free to correct me or add on and give your opinion / personal experiences. I know both have rotating taper seats.

McGard Splinedrives:
-About $100 (roughly).
-Close ended
-Steel construction
-"30% lighter" whatever that means.

Kics R40:
-About $150 (roughly)
-Open ended, extended
-Chromoly construction
-weight 40grams

So my questions / concerns:

-I've seen pictures of a set of R40's that were completely rusted. Poster claimed he had them for about 5-6 months, through a winter. Some said they might be fake. Are there a lot of fakes out there? Does chromoly even rust?

-Do the kics have thread all the way to the taper seat? I have read the threads are recessed and you may not get as much engagement as you want with stock length studs. Any input here? Is it safe to use with stock length studs?

-If I use extended ARP studs, which are also chromoly, does chromoly seize onto chromoly?

-I've read mcgard spline drive keys break a lot. Any such problems with the kics?

-Which is tougher and will withstand more abuse? The steel McGards or the chromoly Kics?

-Is there any difference between the black kics and the neon chrome ones? Durability? Anything other than looks?

-Referencing this post tire rack claims kics is better than mcgard but provide no reasoning for it. Any input?

Price isn't so much a factor. I just really want the "better" of the two.

Thanks in advance!
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