03-30-2019, 01:07 PM
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#1
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Registered User
Join Date: Oct 2018
Location: Evergreen, CO
Posts: 108
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Wheel stud conversion - sources?
My 2004 Boxster S came with 996 series Carrera wheels and ECS Tuning spacers already on it to accommodate the offset. PO also installed longer lug bolts, but I'm looking to add another 5mm spacer on the rear and convert to lug studs to make wheel swaps easier and to make sure I have plenty of thread engagement for upcoming HPDE & AutoX season.
For those who have done the lug stud conversion, where did you source your parts? I'm looking at Elephant Racing's 5mm spacer shims to go behind the 15mm hubcentric ECS spacers, and I think I need 70mm studs for the rear. Probably need 60-65mm studs for the front.
Grateful for recommendations.
Cheers,
Matt
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03-30-2019, 01:20 PM
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#2
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Registered User
Join Date: Apr 2010
Location: Canada
Posts: 3,128
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tarett or rennline. they also sell some nice, light (expensive) spacers. pelican even. you may find that it's the same product sold by all three vendors - they tend to share.
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03-30-2019, 01:29 PM
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#3
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Racer Boy
Join Date: Sep 2015
Location: Seattle, WA
Posts: 946
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I got mine at ECS Tuning. Excellent quality and the best prices I could find. After that, I bought some eBay spacers, and they are terrible quality compared to the ECS spacers.
Last edited by Racer Boy; 03-30-2019 at 06:02 PM.
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03-30-2019, 05:26 PM
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#4
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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I like the design of the tarret pieces. I am not sure they will look good though. They incorporate a shoulder which buts up against the rotor hat surface thereby removing a fair amount of the stress concentration that would normally be resolved at the hub thread and stud interface. Less bending stress means a lower probability stud failures.
There is also less direct stress on hub threads as the stud is not jammed into the threads on installation.
I have not used them as yet and wonder about wheel lug hole clearance around these shoulders.
I believe one could polish the bullet nose area of the studs to a gunmetal colour to better match wheels and nuts.
__________________
986 00S
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03-30-2019, 05:37 PM
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#5
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,955
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a side effect of large spacers
is the fact that they would put extra load on the wheel bearings, and those even if they are not too expensive to buy, they are a pain to replace.. :-(
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03-31-2019, 04:21 AM
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#6
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Registered User
Join Date: Feb 2015
Location: QC
Posts: 412
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I used this company
https://track-studs.myshopify.com
Couple of years now and they’re holding up great.
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03-31-2019, 04:40 AM
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#7
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Registered User
Join Date: Aug 2009
Posts: 1,466
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What ever ones you buy I strongly suggest the type with the bullet tips
https://jesseeash.smugmug.com/Suspension/i-Mrwz4rp/A
These came from Rennline I believe they were 45 MM
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
Last edited by jsceash; 03-31-2019 at 04:53 AM.
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03-31-2019, 06:00 AM
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#8
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Registered User
Join Date: Jul 2005
Location: MA
Posts: 882
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Are you planning to stack spacers? If so, I suggest getting a single spacer at the width that you want. One less failure point (wheel->spacer flange->hub vs. wheel->spacer flange->spacer flange->hub). I know H&R makes 20mm+ widths and likely others do too.
__________________
98 Arena Red 986
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03-31-2019, 08:13 AM
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#9
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Registered User
Join Date: Feb 2017
Location: NorCal
Posts: 171
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Quote:
Originally Posted by WillH
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+1
I think I have 65mm length and they've never given me any worry.
__________________
2022 PCA Zone 7 Autocross Chair
2001 Boxster 986 (base) #414
-PCA GGR: Class Champion AX12 '18, '19, '20; CC06 '21; CC05 '22; PAX 5th '19, 3rd '20, '21, & '22
-PCA Zone 7: Class Champion P14 '18, '19; P02 '20; P-03 '22; PAX Champion '20 & '21
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04-01-2019, 11:10 AM
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#10
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Registered User
Join Date: Sep 2014
Posts: 116
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04-01-2019, 11:19 AM
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#11
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Registered User
Join Date: Dec 2012
Location: FL
Posts: 4,144
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Quote:
Originally Posted by specboxCO
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That's what I run too, I am running the longest bullet nose, 90mm I think. Highly recommended and no reports of breaking.
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04-02-2019, 11:06 AM
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#12
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Registered User
Join Date: Apr 2016
Location: B'ham, AL
Posts: 267
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Quote:
Originally Posted by BrantyB
+1
I think I have 65mm length and they've never given me any worry.
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+4. I use these on my spb with no issues, and a good price point.
__________________
Tim
1998 986 (3.2L and 6-speed transmission added)
1999 986 (SPB)
1999 986 (parts car)
2001 986 S (parts car)
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