Front driveshaft?

[tfunk88]

Originally Posted by Djhumvee

get the caliper upgrade kit from [dentprotony@gmail.com] kit instead

Does he have a website or just contact through email?

Any idea on price? Is his caliper upgrade kit opposed piston rear? 🤞

[Djhumvee]

I think I paid around 2200 or 2500, and it came with pads, just have to buy rotors. bigger calipers than the m brakes although the diameter of the rotors is smaller. He posts on here quite often you just gotta search the forum, there's so threads From him about selling the calipers, he's the same guy that made the upgraded driveshaft which is a more recent topic. I think they're 4 piston rears and 6 piston fronts if I remember correctly.

[tfunk88]

Ahh, yep, I posted on the driveshaft thread, never got a response. 🤷

The M Performance kit is $2700 but includes rotors so I may stick with that route.

[Djhumvee]

Yeah he's not very responsive at times, I think he gets pretty busy. I have his number so if for some reason you opt not to get the M brakes let me know and I'll reach out to him.

[tlow98]

Originally Posted by tfunk88

Yep, did my commute this morning and absolutely smooth! So happy!

And yeah, with close to 100k miles glad to have a new front driveshaft in. And I don’t understand why BMW has the AC condensation drain empty out right above the rear ujoint 🤦

Now I can waste the money I was gonna spend on a new transfer case on the M Performance Big Brake Kit 😂

I was looking at that, too. The x35i brakes are just ok…

Didn’t know about the AC condensation drain. Good lord, thanks BMW.

[tfunk88]

Just an update…car has been perfectly smooth since I changed the fluid and recalibrated the transfer case. 99% sure the issue was caused by the previous owner changing only the rear tires and then changing the fronts 4k miles later. They did that a couple thousand miles before trading in the car…guess they noticed the issue, too 😂

[_ObiJon]

Just to further validate everyone's recommendations to change the transfer case fluid and reset the adaptations, i just did the service myself over this past weekend. I used ProTool to initiate the TC calibration, as i already had it to code a brake upgrade on my F32. Not only did it rectify the unfavorable driving conditions mentioned in this thread but it also cured a shutter/shimmy i had on decel from ~30 to 20 mph. Completely smooth now - like a brand new car. Old fluid was pitch black.

I started a separate thread on front driveshaft play. While the car rides smooth now, it's still on my list to swap out as I'm not completely comfortable with it.

Thank you everyone!

[Tomcat_F15_STL]

Originally Posted by _ObiJon

Just to further validate everyone's recommendations to change the transfer case fluid and reset the adaptations, i just did the service myself over this past weekend. I used ProTool to initiate the TC calibration, as i already had it to code a brake upgrade on my F32. Not only did it rectify the unfavorable driving conditions mentioned in this thread but it also cured a shutter/shimmy i had on decel from ~30 to 20 mph. Completely smooth now - like a brand new car. Old fluid was pitch black.

I started a separate thread on front driveshaft play. While the car rides smooth now, it's still on my list to swap out as I'm not completely comfortable with it.

Thank you everyone!

Great news!

Now, don't screw up your good luck and put off the driveshaft replacement. Get on it. lol

[dentprotony@gmail.com]

I will have upgraded driveshafts finally available starting next week, i will make a separate post on this, just a heads up though

[SunjaKim]

Originally Posted by dentprotony@gmail.com

I will have upgraded driveshafts finally available starting next week, i will make a separate post on this, just a heads up though

Sending payment as per text chat.

https://youtube.com/shorts/y4Kq2ULxACQ?feature=share

[SunjaKim]

Big thanks to Tony dentprotony@gmail.com

My new front drive shaft was delivered and installed today.

Great service and top quality product.

PS. I wonder if the drive shaft had been replaced previously - see the paint pen marks - all joints looked and felt good, no lubricant leakage.

[dentprotony@gmail.com]

Originally Posted by SunjaKim

Big thanks to Tony dentprotony@gmail.com

My new front drive shaft was delivered and installed today.

Great service and top quality product.

PS. I wonder if the drive shaft had been replaced previously - see the paint pen marks - all joints looked and felt good, no lubricant leakage.

Glad you are happy with the upgraded shaft and install was easy peasy for you! Stock shaft might been replaced as a part of bmw campain but it's nowhere near the unit that we make lol.
If anyone is ready to order please text me directly 6016181023 or email dentprotony@gmail.com

It is hard to communicate via pm whem it looks like i am allowed to have 6 messages only. Takes time to delete to be able to receive more and then i cannot keep up with a communication at all. Hope admin would allow me to have 7 messages for Christmas lol

[sipelgas]

I found a cheaper alternative to the extended splines shaft. I installed a custom flange that makes the shaft longer so the splines reach the transfer case deeper.

email me if you’re interested:
samuel.soencer@gmail.com

[SunjaKim]

@sipelgas

Did you install new longer bolts - what length and spec?

One of the hex caps on yours appears to be a little damaged.

[sipelgas]

Originally Posted by SunjaKim

@sipelgas

Did you install new longer bolts - what length and spec?

One of the hex caps on yours appears to be a little damaged.

Yes, I installed longer bolts, allen, 25mm.
Yes, I used ugga dugga and allen key wasn’t pushed all the way so I damaged a bolt

[dentprotony@gmail.com]

Originally Posted by sipelgas

Yes, I installed longer bolts, allen, 25mm.
Yes, I used ugga dugga and allen key wasn’t pushed all the way so I damaged a bolt

How thick is the spacer ?

[SunjaKim]

Originally Posted by dentprotony@gmail.com

How thick is the spacer ?

Good question - I don't think that it gives as much spline engagement as the prop I installed, and it might not be safe to increase the spacers thickness.

[crystalworks]

Originally Posted by SunjaKim

Good question - I don't think that it gives as much spline engagement as the prop I installed, and it might not be safe to increase the spacers thickness.

Why would spacers be unsafe? As long as the bolts used are of appropriate length that is. These have been used for years on X5s to increase the engagement of the shafts on other chassis. So have shaft extenders FWIW.

I am still of the camp that these (the F15 X5 specifically) fail at the U-joint due to corrosion, and not because of shaft engagement at all on the F15. But if it gives peace of mind to have more spline engagement at the transfer case... ppl have choices. Personally, I'd just replace the shaft with a suitable replacement every 100,000 miles for <$200. Which is what I did.

[dentprotony@gmail.com]

Originally Posted by crystalworks

Why would spacers be unsafe? As long as the bolts used are of appropriate length that is. These have been used for years on X5s to increase the engagement of the shafts on other chassis. So have shaft extenders FWIW.

I am still of the camp that these (the F15 X5 specifically) fail at the U-joint due to corrosion, and not because of shaft engagement at all on the F15. But if it gives peace of mind to have more spline engagement at the transfer case... ppl have choices. Personally, I'd just replace the shaft with a suitable replacement every 100,000 miles for <$200. Which is what I did.

Not many make it to 100k. At this point i had over 10 customers that either said ‘it be aait , ill get to it when i get to it’ or ‘meh, dorman got me covered’ , first ones are looking for a new used tranny and asking if new tranny needs to be programmed to the car and how soon can they get my driveshaft, latter split/rip their chinesium down the middle and ask how soon can they get my driveshaft, it also wears the tcase splines further therefore when its time to get longer splines shaft. Any shaft is made to withstand water exposure, ujoints are usually have multiple lipped seals. But i agree i might be wrong, there is no research in my theory, just brainstorming the issue and trying to address it accordingly

[sipelgas]

Originally Posted by dentprotony@gmail.com

How thick is the spacer ?

Honestly I have not measured it yet. First one installed right away for myself. I made a picture before installing it though.
It’s not very thick but it reduces the slack a lot.

I got few orders so I can measure it when I get hands on the new ones.

[crystalworks]

Originally Posted by dentprotony@gmail.com

Not many make it to 100k. At this point i had over 10 customers that either said ‘it be aait , ill get to it when i get to it’ or ‘meh, dorman got me covered’ , first ones are looking for a new used tranny and asking if new tranny needs to be programmed to the car and how soon can they get my driveshaft, latter split/rip their chinesium down the middle and ask how soon can they get my driveshaft, it also wears the tcase splines further therefore when its time to get longer splines shaft. Any shaft is made to withstand water exposure, ujoints are usually have multiple lipped seals. But i agree i might be wrong, there is no research in my theory, just brainstorming the issue and trying to address it accordingly

I'd agree on staying away from the Chinesium shafts on Amazon for ~$100. But a Febi is ~$240.

If in a salt-laden area... yeah, I'd look at replacing every 70-80k I suppose. Especially if the u-joints look badly rusted. But there are currently hundreds of F15s for sale currently with over 100k miles (over 300 on autotrader alone). I'd bet 95%+ of them have the original shaft in them.

I'm glad you made a product like this for peace of mind for those that want it. Overbuilding isn't a bad thing. But, it should be noted, those who are more budget conscious have options to address the problem as well. As is, there isn't a huge epidemic of exploding shafts, but peace of mind is good. That's why I replaced ours even though the original hadn't failed. The u-joint in the original was crunchy compared to the new one.

[dentprotony@gmail.com]

One more.