apex lug kit 75mm or 90mm

Vanne · 11-18-2014, 11:34 AM

hi guys, finally decided to pull the trigger on one of the apex lug conversion kits, but I am at a loss which kit to choose..

I am running 10mm spacers, will the 75mm be long enough? or do I need to go the 90mm?

thx in advance guys.

RobMCoupe · 11-18-2014, 11:36 AM

75mm will work up to 12mm spacer. I was looking at them too, but decided to wait on it.

jdoublehcubed · 11-18-2014, 02:59 PM

I would recommend the 90mm so you have flexibility on wheel spacer selection later.

I got mine from Rotiform, I think they had an 85mm size that was a nice option.

Kgolf31 · 11-18-2014, 06:06 PM

I ran 75mm when I still tracked my car. Front stuck out a wee bit but the rears were flush.

pokeybritches · 11-18-2014, 06:21 PM

Quote:

Originally Posted by RobMCoupe

75mm will work up to 12mm spacer. I was looking at them too, but decided to wait on it.

This is correct - I have 75 mm studs with 12 mm spacers. Keep in mind the longer studs will stick out further. If you have to run huge spacers, you need different wheels IMHO.

Vanne · 11-18-2014, 09:36 PM

75mm it is then guys, thx

3002 tii · 11-19-2014, 07:54 AM

I also got extended lug nuts with my stud

Beedub · 11-21-2014, 01:19 PM

these apex studs... be warned, a guy on m3forums had a a complete set on 1 wheel sheer off on a 2 month old set..... He pm'd me detailed info on what had happened and they basically failed, no impact , not 1 snap but the whole set on 1 wheel, i found this very concerning.

more than happy to dig up the thread......

3002 tii · 11-21-2014, 02:12 PM

Quote:

Originally Posted by Beedub

these apex studs... be warned, a guy on m3forums had a a complete set on 1 wheel sheer off on a 2 month old set..... He pm'd me detailed info on what had happened and they basically failed, no impact , not 1 snap but the whole set on 1 wheel, i found this very concerning.

more than happy to dig up the thread......

Unfortunate thing is threads like those are not unusual, and there's never a definitive answer as to why it happened. There are so many variables, many pointing to if the user installed them correctly. With that said, I have used Apex, Bimmerworld and VAC studs. The reason for so many is because I replace them every 2 years. But loctite + proper torque (which is a lot less than one would think) + reasonable replacement intervals and you should be good to go.

Beedub · 11-22-2014, 02:40 AM

Quote:

Originally Posted by 3002 tii

Unfortunate thing is threads like those are not unusual, and there's never a definitive answer as to why it happened. There are so many variables, many pointing to if the user installed them correctly. With that said, I have used Apex, Bimmerworld and VAC studs. The reason for so many is because I replace them every 2 years. But loctite + proper torque (which is a lot less than one would think) + reasonable replacement intervals and you should be good to go.

solid response as always my friend, i completely agree with you, it is strange that the bolts we replaced never had such issues ???

i have studs too and i think I'm due to replace them. I've done 3 years on them, around 8 track days now. but the failure rate on studs is MUCH higher than the stock bolts we are supposed to upgrading... something isn't quite stacking up for me.

Vanne · 11-23-2014, 11:53 PM

listening intently to Dub and tii...

11-18-2014, 11:34 AM	#1
Vanne Down Under!! 1621 Rep 4,294 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	apex lug kit 75mm or 90mm hi guys, finally decided to pull the trigger on one of the apex lug conversion kits, but I am at a loss which kit to choose.. I am running 10mm spacers, will the 75mm be long enough? or do I need to go the 90mm? thx in advance guys. __________________ 2007 EuroSpec Z4///MC - Building/Developing Z4 GT3 Powered by
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11-18-2014, 11:36 AM	#2
RobMCoupe Captain 60 Rep 932 Posts Drives: 2007 Z4 M Coupe Join Date: Feb 2010 Location: Bay Area iTrader: (6)	75mm will work up to 12mm spacer. I was looking at them too, but decided to wait on it.
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11-18-2014, 02:59 PM	#3
jdoublehcubed Mechanical Engineer 96 Rep 1,025 Posts Drives: 2006 Z4MR, Imola Red Join Date: Jul 2012 Location: Anaheim, CA iTrader: (1)	I would recommend the 90mm so you have flexibility on wheel spacer selection later. I got mine from Rotiform, I think they had an 85mm size that was a nice option.
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11-18-2014, 06:06 PM	#4
Kgolf31 Brigadier General 459 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	I ran 75mm when I still tracked my car. Front stuck out a wee bit but the rears were flush.
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11-18-2014, 09:36 PM	#6
Vanne Down Under!! 1621 Rep 4,294 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	75mm it is then guys, thx
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11-19-2014, 07:54 AM	#7
3002 tii Lieutenant General 2282 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.22]	I also got extended lug nuts with my stud __________________ Follow for latest mods
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11-21-2014, 01:19 PM	#8
Beedub Major General 423 Rep 5,327 Posts Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK iTrader: (0)	these apex studs... be warned, a guy on m3forums had a a complete set on 1 wheel sheer off on a 2 month old set..... He pm'd me detailed info on what had happened and they basically failed, no impact , not 1 snap but the whole set on 1 wheel, i found this very concerning. more than happy to dig up the thread...... __________________ Z4MR VT2 - Clubsport build. Multi award winning Detailing \| Wrap \| PPF specialists UK based - www.topwrapz.com
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11-23-2014, 11:53 PM	#11
Vanne Down Under!! 1621 Rep 4,294 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	listening intently to Dub and tii... __________________ 2007 EuroSpec Z4///MC - Building/Developing Z4 GT3 Powered by
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