Lug nut upgrade
What a difference!
compare your lug bolts with these!
How much did you pay for titanium lugs? I couldn't find a set under $250. I got anodized black lugs that have removable seats to support OEM or aftermarket wheels for under half of that, and they also have custom locking lugs that are unable to have a socket banged over them.
Couldn't stand the rust look of the OEM lugs. They aren't titanium but I haven't had any problems with them at all. In fact, I run them on all of my cars with no problems.
I could put the OEM Mercedes lock on, but it would look out of place.
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They seem to be the right size to fit the W204 OEM wheels (M14x1.5, 27-28mm with an R14 ball seat). They don't specify the radius on the ball seat but looking up the other vehicles they're supposed to fit and a quick measurement from the photos seem to suggest they're R14s.
center caps were also shot, those were about $60 for 4. I believe its the wheel cleaner that kills the center caps, will prob stop using that stuff on her 204 going forward.




One thing most people don’t know is you have to be vary careful with is titanium fasteners they can very easy develop stress cracking points at the route of the threads.
You have to buy from reputable firm with quality control not manufactured in third world and sold via some where else.
I dint know yours may be really good and top notch so all good if it is, but a warning for buy cheep from not so good place.
Having worked with a bunch of aftermarket companies in my 9 years of modifying cars, I can definitely say some aftermarket parts are of higher quality.
One thing most people don’t know is you have to be vary careful with is titanium fasteners they can very easy develop stress cracking points at the route of the threads.
You have to buy from reputable firm with quality control not manufactured in third world and sold via some where else.
I dint know yours may be really good and top notch so all good if it is, but a warning for buy cheep from not so good place.
Having worked with a bunch of aftermarket companies in my 9 years of modifying cars, I can definitely say some aftermarket parts are of higher quality.
I tried searching your lug nuts to learn more about them but could only find them on ebay coming straight from china...
do you know what galling is? because you could be in for a real surprise when a cheap, undisclosed spec'd lug bolt snaps off in a very expensive wheel carrier. Unless you know for sure what grade Ti is being used you are really just hoping for the best.
Ti and steel are far apart on the anodic scale, the Ti will actually corrode the steel if water is present.
Pure Ti is rather brittle and tends to fail (when it does) dramatically. The most common alloy of Ti is 3/2 - that is 3 percent Aluminum / 2 percent Vanadium, which is light and strong. There is also 6/4 Ti (6 percent aluminum, 4 percent Vanadium) which is a bit stronger but I think lacks the tensile strength of 3/2. The thing is, there are a number of grades of Titanium as well... sources of mined Ti; eastern European Ti used to be looked at as suspect with impurities but this was many years ago.
Last edited by B737; Jul 24, 2017 at 09:18 AM.
1) how is a lug nut more important or stressed on the C-Class compared to a different car?
2) Because nothing is stronger or better than OEM? Like my OEM headbolts that tend to fail and cost thousands to replace? This logic is very flawed. OEM stuff has what MB considered the best cost-benefit ratio. There are far better parts available in the aftermarket for many things.
I spent some time trying to diagnose the root cause and measure my parts but to no avail. All the bolts came out the same exact overall length, the wheel hole depths are the same, the rotor hat thickness was the same, and it was only rubbing on the lower section of the steering knuckle. There was no play in the hub either.
I can only guess the aftermarket bolts were just too long with the wheels I am using and maybe the steering knuckle was too long on the left casting. Still not 100% certain, but I will get to the bottom of this.
I would venture a part stamped from manufacture is prob better than MOST aftermarket crap. keep working on cars and you'll learn this, it takes a while, it did for me, im a slow learner.
I tried searching your lug nuts to learn more about them but could only find them on ebay coming straight from china...
You must not buy quality aftermarket parts, but coming from the Japanese side of modding most aftermarket parts are higher quality. OEM only meets DOT spec...it doesn't mean they are the highest quality.
Last edited by 97 GSX 97; Jul 25, 2017 at 01:48 AM.




I am saying do some homework to make sure you keep safe and that applies down the road when you sell the car.
I work in the aeronautical industry on airframes and engines also qualified automotive engineer and work with large and small titanium bolts so I do have some knowledge about this subject. Titanium bolts have a very generous radius where it goes from the shank to the head and the threads are carefully formed.








