Rennline Stud/Lugbolt Conversion
Has anyone replaced the OEM lug bolts with the Rennline studs? I want to make this conversion on my 2000 Boxster to make changing wheels easier....thinking 45mm all 4 corners will do the trick but want to hear from you if you have done the conversion. Thx
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Go longer
You may want to add spacers at some point. I have 60 mm and they fit up to 10 mm spacers no problem Also, there are a bunch of lower cost studs available on ebay and amazon search around a bit. IIRC, my studs were around $25 and the lug nuts were the same. I bought silver colored ones as my wheels are silver and I think that looks better |
No affiliation but am happy with their products to date.
https://motorsporthardware.com/product-category/porsche/wheel-stud-conversion-kits-porsche/ |
i have 45mm and am running 7mm spacers no problem. 10mm wouldnt be an issue either, but would have to have a look to see if there is enough thread for 15mm. realise that if you wanted to run a narrowbody wheel from a 911 (lots more selection, but with a 65mm offset) you would be looking at a 20 mm spacer. with a 20mm spacer you would want the type w integral lugs, and with 60 mm lugs on the car they wouldnt fit behind the wheel if that makes sense.
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I am using the 65mm version of these:
M14x1.5 ACS Race Series Studs — Track-Studs.com And these nuts: Porsche PRO series nuts — Track-Studs.com They don't stick out too far, and there is plenty of thread even if I wanted to run spacers within reason, but if I run my Carrera twist wheels, the rear have a pretty deep well for the lug nut and it is tough to start the nut by hand, if I had it to do over again I would get the 80 mm or even the 90 bullet nose: M14x1.5 'Bullet Nose' race stud — Track-Studs.com This is the wheel I'm talking about, have a pretty deep well in the wheel for the lug bolt/stud/nut, [edit: here is a picture of my rear wheels with the studs, see how deep they are in the wells? Plenty of thread engagement, but hard to start by hand.] http://986forum.com/forums/uploads02...1486414493.jpg I love them, very easy to take wheels on and off this way. |
It also depends on how the studs are measured
Is it the full length, or just the amount extending past the rotor surface These are what have http://www.ebay.com/itm/20-Wheel-Stud-Conversion-14x1-5-TO-14x1-5-Studs-Adapter-Kit-63mm-2-50/261504562085?_trksid=p2047675.c100005.m1851&_trkpa rms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D2%26asc%3 D20131003132420%26meid%3D703bd76fddd1438b88aeecd42 b84c758%26pid%3D100005%26rk%3D5%26rkt%3D6%26mehot% 3Dag%26sd%3D310852646707; 20 Pc Wheel Lug Nuts Ball Seat Porsche Open End 14x1.5 New You want open ended lug nuts, so you can see that they are engaged with enough thread That is also generally a requirement if you are tracking your car |
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Looks like bolts |
This thread will save me $100. I was planning on doing studs before spring
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[Edit: I found a pic of my rear wheel on the car with the studs in that style and replaced the picture, so now it shows the studs] |
Here is that style of wheel, with the front wheel shown with the studs.
Go longer, in fact I think I may go ahead and order the 90mm bullets... They don't stick out super far if you are worried about that. http://986forum.com/forums/uploads02...1486414718.jpg |
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Is there a stud fittment issue that I am aware of. Yes I am way out there...not enough flexural rigidity on longer studs...65mm? |
i was talking these guys:
http://i.ebayimg.com/images/g/zXgAAO...cCY/s-l300.jpg if you use these, then the studs on the car can interfere with the wheel when installed if too long. i'm sure you could use normal spacers with extra long bolts or studs as well. i'm not up on the physics of these things, so not sure if one is better than the other. with the method pictured you are more versatile for switching between different wheels with different offsets without having to have sets of different length bolts or have studs sticking out extra far. |
I think what he is saying is that generally thicker spacers like that should be bolted to the hub and those that are like that have ntegrated lug nuts built into the spacer. Similar to this. If you are sliding the spacer on the longer studs - I'd go with the 80mm to make sure you have clearance and sufficient threads for the nuts to thread on correctly.
I've had custom spacers done from Motorsport-tech.com for a couple of cars. I like that they can match your centerbore of the wheel so you don't have to use any centerbore rings if the wheels you are running have them. http://www.classicshop.porsche.com/m.../zoom/2259.jpg |
Right right ...thanks guys. Yeah I am always a bit concerned about my thick rear spacers......on long studs now aswell
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