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-   -   6UL wheels still cracking... (https://www.miataturbo.net/wheels-tires-78/6ul-wheels-still-cracking-101054/)

wannafbody 09-09-2019 09:24 AM


Originally Posted by concealer404 (Post 1548279)
Just play it safe and replace your wheels with your tires. Simple, forehead.

Stupid answer, period. That would mean every weekend for some users and every couple months for others. This "consumables" BS is beyond stupid.

Dunning Kruger Affect 09-09-2019 09:29 AM

i initially saw it on a thread on somethingawful, and then i decided to see what was out there on mnet and facebook

the dude who's going scorched earth uses a lot of interesting sentence constructions that totally doesn't make it seem like he's trying to hide something

wannafbody 09-09-2019 11:19 AM

Just to clarify, Keith from FM has responded and stated that the failures spread beyond a single wheel. They are multiple different wheel lines by different manufacturing facilities over an extended time period. Someone else also confirmed that there was a production change to the 15 inch wheels but the reason for that is not known. Maybe it was an attempt to correct an issue maybe it was just a random change.

Keith@FM 09-09-2019 12:48 PM

To clarify:
There are four generations of 15" that have distinct design changes and were built with different manufacturing techniques. We know there was a problem with the 15" Gen 2. I'm not aware of problems with the current 15" Gen 4.

The 17" NC and ND wheels are built on different tooling and designed to different load ratings. The one that I'm particularly interested in is the 17" ND wheel. If you personally have inspected a set of your own and found cracks, please drop me a line so I can get a clear idea of how many are experiencing problems.

Right now, there are at least three different basic wheel designs for 6ULs: 15", NC 17" and ND 17". They all look alike but they vary enough to be considered different wheels when looking at failures. I don't know enough about the manufacturing of the 15s to know if the different widths of 15 should be treated differently in that regard.

Schroedinger 09-09-2019 12:51 PM

Emilio obviously frequents the forum, I would be interested to hear his side of the story. Whether or not his wheels have a design flaw, sounds like one (or more) of his customers could use a hug right now. Unfortunately this whole internet thing makes it easy for one or two upset customers to rally the torch/pitchfork crowd. I’ve been using Konig and Advanti wheels with no issues, but it’s mostly because I couldn’t justify the price difference for the 6UL’s.

ryansmoneypit 09-09-2019 01:21 PM

I'll have another data point soon. I have a track day at VIR coming up, and plan to get a lot of hours on my gen 2's.

Dunning Kruger Affect 09-09-2019 01:23 PM

gen 2 what? 15"? 17"? 17" with 4 lug?

ryansmoneypit 09-09-2019 02:27 PM


Originally Posted by Dunning Kruger Affect (Post 1548305)
gen 2 what? 15"? 17"? 17" with 4 lug?

6 uls, 15x9

poormxdad 09-09-2019 03:29 PM

Two of my 15x8 Gen 1 6ULs finally developed cracks in the spokes just a couple of months ago. I believe I purchased them in 2009 and drove the crap outta them on track when I was new to HPDE, and more recently as my no tire/brake change option. I have two non-cracked 15x9 Gen 2s that I retired after one season, lost somewhere in the garage. The other two were taken to the dump.

hornetball 09-09-2019 05:04 PM


Originally Posted by Schroedinger (Post 1548300)
I’ve been using Konig and Advanti wheels with no issues

No aluminum wheel is immune. I felt that the Advanti S1 fatigued a bit too early at around 8 sets of tires. But it cracked in a very safe manner, so no real complaints. The 6UL failure mode in the pictures is gnarly. I've also seen several of the Team Dynamics SM wheels (i.e., built heavy) fail in exactly the same way. So . . . .

Pictures of how the S1 cracks:

https://www.miataturbo.net/wheels-ti...parison-95534/

codrus 09-09-2019 06:13 PM


Originally Posted by Keith@FM (Post 1548298)
To clarify:
There are four generations of 15" that have distinct design changes and were built with different manufacturing techniques. We know there was a problem with the 15" Gen 2. I'm not aware of problems with the current 15" Gen 4.

The 17" NC and ND wheels are built on different tooling and designed to different load ratings. The one that I'm particularly interested in is the 17" ND wheel. If you personally have inspected a set of your own and found cracks, please drop me a line so I can get a clear idea of how many are experiencing problems.

Right now, there are at least three different basic wheel designs for 6ULs: 15", NC 17" and ND 17". They all look alike but they vary enough to be considered different wheels when looking at failures. I don't know enough about the manufacturing of the 15s to know if the different widths of 15 should be treated differently in that regard.

Any idea how to tell the difference between the NC & ND 17"s? Is it just 4 bolt vs 5 bolt?

Asking because I have a set of "S2000" 17" 6ULs on my FD... :)

--Ian

dleavitt 09-09-2019 06:41 PM


Originally Posted by ryansmoneypit (Post 1548304)
I'll have another data point soon. I have a track day at VIR coming up, and plan to get a lot of hours on my gen 2's.

RIP in peace.

poormxdad 09-09-2019 07:58 PM


Originally Posted by dleavitt (Post 1548342)
RIP in peace.

What do the "I" and "P" mean?

concealer404 09-09-2019 07:59 PM

RIP in pepperonis my friend.

dleavitt 09-09-2019 08:27 PM


Originally Posted by poormxdad (Post 1548347)
What do the "I" and "P" mean?

https://knowyourmeme.com/memes/rip-in-peace

poormxdad 09-10-2019 09:27 AM


Originally Posted by Schroedinger (Post 1548300)
I’ve been using... Advanti wheels with no issues, but it’s mostly because I couldn’t justify the price difference for the 6UL’s.

I have a set of 15x9 S1s. I swore to myself I would never buy another wheel with spokes that stick out past the edge of the rim.

wannafbody 09-11-2019 12:18 AM

I've seen some pics posted to facebook of severely failed 6UL's. I'm not sure of exactly what sizes were involved and I don't know exactly why they failed. Regardless, it should be taken seriously by everyone as a few people are probably very lucky that they weren't seriously injured or killed. Go ahead and roast me if that makes you feel manly. But this isn't an issue for a stand up comedy routine.

wannafbody 09-11-2019 12:40 AM


Originally Posted by poormxdad (Post 1548400)
I have a set of 15x9 S1s. I swore to myself I would never buy another wheel with spokes that stick out past the edge of the rim.

That seems like a dumb design for a track type wheel.
I've seen one pic of a failed Team Dynamics and it was as bad as the 6UL pics. Has there been issues with the latest versions of that wheel?

huesmann 09-11-2019 09:25 AM


Originally Posted by poormxdad (Post 1548400)
I have a set of 15x9 S1s. I swore to myself I would never buy another wheel with spokes that stick out past the edge of the rim.

Seems dumb unless the wheel is meant only for track. Unless the purpose is to avoid curb rash on the rim...

...by moving the rash to the spokes. :rolleyes:

Erat 09-11-2019 10:31 AM

Or to give adequate room for bbk's and maintain a decent amount of material in the spokes with a crummy offset.


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