[BimmerHausPerformance]

I just did a write up in the suspension section.

[windowmaker]

Lol I come here to this thread thinking finally someone had the balls to do the LSD conversion and bunch of people end up discussing suspension mods.

[BimmerHausPerformance]

I am gonna do this eventually - makes too big of a difference not to! But after a turbo.

[naCAnItihS]

Originally Posted by windowmaker

Lol I come here to this thread thinking finally someone had the balls to do the LSD conversion and bunch of people end up discussing suspension mods.

Agreed. I was hoping there was finally something real.

I did message RacingDiffs.com and asked them if they make anytrhing for the F10 535i and this was their response:

"Hello, Justin

Unfortunately nothing that we currently have available will fit into your differential. Due to high demands for production of other parts and company’s strategy which leads us in different direction, we are not able to tell you when we will be able to make the set for your application. Sorry about that. "

[BimmerHausPerformance]

Originally Posted by naCAnItihS

Agreed. I was hoping there was finally something real.

I did message RacingDiffs.com and asked them if they make anytrhing for the F10 535i and this was their response:

"Hello, Justin

Unfortunately nothing that we currently have available will fit into your differential. Due to high demands for production of other parts and company’s strategy which leads us in different direction, we are not able to tell you when we will be able to make the set for your application. Sorry about that. "

Yea, I contacted them on FB and they told me the same thing. After doing more research though their set up "wears out" so you have to do some maintenance. Also, it doesn't upgrade the axles, whereas if you did an M5 swap, you would have the upgraded axles too. Same thing with Quaife - maybe the best bang for the buck is M5 since the axles would be upgraded as well. Not sure on the cost with that since it has an electrical motor, so I'm sure there are modules and programming to be done.

[95blkmax]

Originally Posted by BrowBMW

Yea, I contacted them on FB and they told me the same thing. After doing more research though their set up "wears out" so you have to do some maintenance. Also, it doesn't upgrade the axles, whereas if you did an M5 swap, you would have the upgraded axles too. Same thing with Quaife - maybe the best bang for the buck is M5 since the axles would be upgraded as well. Not sure on the cost with that since it has an electrical motor, so I'm sure there are modules and programming to be done.

I'm suspecting the M5 diff swap to be even more complex than initially thought. I just compared diagrams of my (your) rear diff, Vs the M5 diff, and the front mounting provisions have mounting bolts spread out further AND using 4 bolts Vs just 2 on the non-M. Also, the rear mounting of the M5 unit has a bushing mounted transversely, Vs our diff's flange that goes right to the subframe. Having said that, it's safe to say we'd also need a new rear subframe to go along with it all. We'd EASILY be looking into the few thousands at that point, and STILL not really know if the control modules can be made to work on a non-M :sad:

I think BMW makes pretty stout axles. 90% of us modding are never really going to get over 380WHP anyway. The few that are over that mark on F10s/ F06s are all running stock axles without problems (to the best of my knowledge** someone please correct me if I am wrong). Based on that, I think that for most of us that just want to have a locking rear diff, the Quaife would be plenty enough.

What are your thoughts guys?

[BimmerHausPerformance]

Wow yea, good info and you are right, probably NOT worth it. n54 335's M diff is a direct swap - but it doesn't surprise me we have that much difference between our 535's and M5's.

Full bolt-on and e85 (with tune obviously) will get you over 400 WHP out of a n55. I mentioned this in the LPFP thread where a guy had that and dyno'd over 400. Link in the other thread.

[jayster0966]

Just to throw in my $.02 worth, I just tried installing the WaveTrac LSD in my 2011 535 and even though WaveTrac shows PN#30.309.175WK as the required part, IT DOES NOT FIT. It is actually made for the older type diff with the output flanges which we do not have.

[windowmaker]

Think if my puts cash in I may look into getting the Wavetrac for the 550:
https://www.ecstuning.com/b-wavetrac...309172wkwvtkt/

Realistically I'm looking into about 3k since ring gear is apparently welded on and needs a shop. That's if I remove the pumpkin myself which I may be able to do.

[ezaircon4jc]

Originally Posted by windowmaker

Think if my puts cash in I may look into getting the Wavetrac for the 550:
https://www.ecstuning.com/b-wavetrac...309172wkwvtkt/

Realistically I'm looking into about 3k since ring gear is apparently welded on and needs a shop. That's if I remove the pumpkin myself which I may be able to do.

Says it fits the 550 w/manual trans only.

[BimmerHausPerformance]

Originally Posted by ezaircon4jc

Says it fits the 550 w/manual trans only.

I've got a 535 6MT, I wonder what the difference is between my diff and a 550 diff. I'm sure the 550 one is a lot more similar to the M5 diff.

[jayster0966]

Originally Posted by BrowBMW

I've got a 535 6MT, I wonder what the difference is between my diff and a 550 diff. I'm sure the 550 one is a lot more similar to the M5 diff.

Don't quote me on this but if I am not mistaken the 550 diffs are welded and the axle diameter and spline count may be different

[windowmaker]

Originally Posted by ezaircon4jc

Says it fits the 550 w/manual trans only.

Yeah the manual 550 diff may not suit most people on this board but I imagine the only real difference would be the final drive ratio and there's probably a wavetrac alternative unit for the auto trans.

[naCAnItihS]

Anyone check these guys out before??

https://diffsonline.com/bmw-f10-535i...l#.XqpEJBgpA0F

[BimmerHausPerformance]

Looks like an option! 3000-4000 ish depending on options.

[95blkmax]

Originally Posted by BrowBMW

Wow yea, good info and you are right, probably NOT worth it. n54 335's M diff is a direct swap - but it doesn't surprise me we have that much difference between our 535's and M5's.
...

I just realized this was a nugget of information that was not delved into! Are we talking E90/ E90 LCI 335?

[jayster0966]

Originally Posted by 95blkmax

I just realized this was a nugget of information that was not delved into! Are we talking E90/ E90 LCI 335?

please correct me if I am wrong but doesn't the e90 rear diffs have the flange while our f10 does not?

[95blkmax]

Originally Posted by jayster0966

please correct me if I am wrong but doesn't the e90 rear diffs have the flange while our f10 does not?

That's what I am seeing now on the catalog. F10 slip the axle into the diff, E90 gets bolted to existing flange.

UNLESS, what Brow meant was the gear set? Unfortunately I have no way to confirm if this would work or not based on the catalog, as these internal parts are not sold separately by BMW. External shape and dimensions are VERY similar so it's possible???

[naCAnItihS]

Originally Posted by jayster0966

please correct me if I am wrong but doesn't the e90 rear diffs have the flange while our f10 does not?

From some brief research it looks like the E9x diffs have axle shaft flanges and the F10s do not. I don't know if those are removable and the F10 axle would fit.

[jayster0966]

Originally Posted by naCAnItihS

From some brief research it looks like the E9x diffs have axle shaft flanges and the F10s do not. I don't know if those are removable and the F10 axle would fit.

The flanges are removable. Problem I came across with the Wavetrac unit is that even it was listed for F10 it was designed for the E90 which some have the same gear ratios. Problem came up when trying to insert the F10 axle into the diff the axle diameter was larger and the axle spline count was completely different.

[95blkmax]

Originally Posted by jayster0966

The flanges are removable. Problem I came across with the Wavetrac unit is that even it was listed for F10 it was designed for the E90 which some have the same gear ratios. Problem came up when trying to insert the F10 axle into the diff the axle diameter was larger and the axle spline count was completely different.

Damn!

[Brendenmobley]

Please bring this thread back to life I need to know if diffsonline is a good choice for a true lsd