Lots of German cars left the factory with wheel bolts, but that doesn’t mean you have to deal with them every time you need to remove the wheels.
Instead, why not swap to lug studs? Here’s how we converted our 2017 Volkswagen GTI project car from wheel bolts to lug studs using a kit from 034 Motorsport.
Presented by CRC Industries.
2/24/23 6:03 p.m.
Reasons.
If one is careful with the lug nuts, not overtorquing and not using lug nuts that are threaded all the way to the base, they are perfectly fine, but bolts are a lot more hamfist-tolerant.
Shanked lug nuts eliminate the thread damage issues but they introduce their own problems.
2/25/23 3:18 p.m.
Installing wheels onto my E30 sucked so much less when I changed to studs.
2/26/23 5:28 p.m.
Nice video. I'm putting some spacers on and really prefer studs over bolts. No worry for having the right length bolts and easy to swap different wheel configurations.
2/27/23 9:08 a.m.
I converted the M3 to studs. So much easier.
5/1/23 2:28 p.m.
So last August at the Glen a number of cars broke studs that needed to be extracted and replaced. This was a BMW CCA event so lots of wheel bolts in the pits. I asked our group who had ever broke a wheel bolt and nobody had but breaking studs seemed almost commonplace. I'm sure part of that is more cars on the racier end of things are running studs and being pushed harder but there were still lots of heavy M3/4's rolling around on stock hardware with sticky tires not having any problems.
So other than it is slightly easier to mount a tire (which matters for a race car where super quick tires changes are important) why would I actually want to spend the money to convert to studs for my track/autocross only car? Seems like an expensive way to make an important system less reliable
5/1/23 5:15 p.m.
In reply to adam525i :
I'm curious how many of them went to studs because they were using spacers? That could be a contributing factor for breakage.
I plan to change my son's audi tt to studs. It has different width spacers front and rear with the appropriate length bolts. Some day either he, or someone else besides me is going to change the wheels and put the bolts in the wrong place. Then, the wheels are going to fall off one end, and the bolts are going to go right into the abs ring on the other
5/1/23 5:21 p.m.
https://www.core4motorsports.com/gallery-of-broken-bmw-wheel-studs
My E46 is getting switched back to bolts this season.
5/1/23 6:18 p.m.
I've converted all my BMWs and Benzes to lug studs. The only thing I would add is I run an ARP thread cleaning chaser bit through each hole before installing the new studs. With 30+ year-old cars, there's always some corrosion/dirt/junk in there. I feel better starting with clean threads.
5/1/23 6:48 p.m.
As for broken lug studs...here are some thoughts.
5/1/23 8:40 p.m.
It's a lot more than "slightly easier", IME.
200 track hours on my E46 M3 race car with studs and so far so good. They do get replaced on the same interval as the wheel bearings, though. Buy the good ones, install them properly, and then don't drive around with either overtorqued or (even worse) loose lug nuts.
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