75D AKG Motorsport Subframe Bushings (4 month review)

FactorX81 · 05-19-2015, 08:14 AM

Quote:

Originally Posted by Sixle

I'll attach pictures next time I'm at the house. For torque spec I went with the recommended standard bushing torque of 74 ft-lbs. The 75D bushings are extremely hard, so hard that if you try to make an indentation in the urethane with your fingernail you'll likely break your nail before you make your mark. I believe the 95A are too soft for the stock torque specs because they don't have the aluminum inner piece.

If you look at AKG's website there is no torque spec on the 75D bushings, only the 95A.

Just installed these this weekend and the instructions that came with them said 60 ft-lbs.

andrey_gta · 05-19-2015, 10:57 AM

Quote:

Originally Posted by FactorX81

Just installed these this weekend and the instructions that came with them said 60 ft-lbs.

Were yours easy to slide into the frame as well?

FactorX81 · 05-19-2015, 12:26 PM

I put them in the freezer for a couple of hours I don't know if it helped but yes they went in very easy, not drop in easy but didn't need tools just hand pressure.

Sixle · 05-29-2015, 12:49 AM

Quote:

Originally Posted by FactorX81

Just installed these this weekend and the instructions that came with them said 60 ft-lbs.

I didn't get instructions, you're lucky!

Andrey, My bushings pressed in by hand without a trip to the freezer. That said polyurethanes thermal expansion coefficient is 2-3 times higher than aluminum so frezzing will be a big help no matter what.

FactorX81 · 05-29-2015, 06:35 AM

Quote:

Originally Posted by Sixle

I didn't get instructions, you're lucky!

Andrey, My bushings pressed in by hand without a trip to the freezer. That said polyurethanes thermal expansion coefficient is 2-3 times higher than aluminum so frezzing will be a big help no matter what.

Did you notice any increase in NVH? I think I am noticing a little more diff whine at about 10MPH. Its only really noticeable with windows down, no radio, and no HVAC but it is there. I also feel as though the transmission shifts easier. I'm not sure why that would be the case but there is less notchyness especially 1-2.

Sixle · 07-10-2015, 03:47 PM

Sorry for the late reply, been a crazy summer so far.

I haven't noticed any NVH, just a firm rear end. I drive without music so infrequently that I hear alot of things I usually don't when the music is on, but it doesn't sound like diff whine on my end. Maybe your using a different diff fluid? mine is OE fill.

Quote:

Originally Posted by FactorX81

Did you notice any increase in NVH? I think I am noticing a little more diff whine at about 10MPH. Its only really noticeable with windows down, no radio, and no HVAC but it is there. I also feel as though the transmission shifts easier. I'm not sure why that would be the case but there is less notchyness especially 1-2.

brocklanders · 07-10-2015, 07:02 PM

The thing that I also noticed is that I also get wheel spin without noticing. I have whiteline full poly with the eibach 15mm rear bar and dunlop zll's. The rear will pull out a little before I notice the wheels are slipping.

Sixle · 07-14-2015, 12:17 AM

I noticed the exact same thing, I actually think I mentioned it in my initial post.

Quote:

Originally Posted by brocklanders

The thing that I also noticed is that I also get wheel spin without noticing. I have whiteline full poly with the eibach 15mm rear bar and dunlop zll's. The rear will pull out a little before I notice the wheels are slipping.

Cosmoslux · 10-28-2017, 01:51 AM

How would you compare these to the M3 bushings? Are these a 2 piece bushing so you don't need to drop the subframe completely?

spxxx · 10-28-2017, 10:22 PM

Great option, with the steel insert. Very cheap and good quality

https://rover.ebay.com/rover/0/0/0?m...2F172487864143

ShocknAwe · 10-28-2017, 10:30 PM

Quote:

Originally Posted by spxxx

Great option, with the steel insert. Very cheap and good quality

https://rover.ebay.com/rover/0/0/0?m...2F172487864143

I'm all for a good deal and avoiding BMW tax, but that gives me the heebity jeebities.

spxxx · 10-28-2017, 10:33 PM

Quote:

Originally Posted by ShocknAwe

Quote:

Originally Posted by spxxx

Great option, with the steel insert. Very cheap and good quality

https://rover.ebay.com/rover/0/0/0?m...2F172487864143

I'm all for a good deal and avoiding BMW tax, but that gives me the heebity jeebities.

I ordered some to check them out, I run Powerflex Black but regret paying $400 for them.

These are equally high quality... Check out reviews on some of the EMEA forums, great reviews on them. Molding plastic isn't exactly rocket science haha

ShocknAwe · 10-29-2017, 06:13 AM

Quote:

Originally Posted by spxxx

I ordered some to check them out, I run Powerflex Black but regret paying $400 for them.

These are equally high quality... Check out reviews on some of the EMEA forums, great reviews on them. Molding plastic isn't exactly rocket science haha

You have any way to test deformity? My concern is that they'll shatter or separate inside the subframe rendering them useless.

Traf · 10-29-2017, 07:07 AM

New M cars rear subframe is mounted directly to the body, why not aluminum bushings then ?

05-19-2015, 12:26 PM	#25
FactorX81 First Lieutenant 29 Rep 363 Posts Drives: 2010 135i, 2014 Ford Escape Ti Join Date: Nov 2009 Location: NJ iTrader: (0)	I put them in the freezer for a couple of hours I don't know if it helped but yes they went in very easy, not drop in easy but didn't need tools just hand pressure.
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07-10-2015, 07:02 PM	#29
brocklanders Major 105 Rep 1,428 Posts Drives: the uno, mineral white Join Date: Mar 2010 Location: houston iTrader: (3) Garage List 06 325 [0.00]	The thing that I also noticed is that I also get wheel spin without noticing. I have whiteline full poly with the eibach 15mm rear bar and dunlop zll's. The rear will pull out a little before I notice the wheels are slipping.
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10-28-2017, 01:51 AM	#31
Cosmoslux New Member 10 Rep 11 Posts Drives: 2011 128i AW Join Date: Jan 2017 Location: SF Bay iTrader: (0)	How would you compare these to the M3 bushings? Are these a 2 piece bushing so you don't need to drop the subframe completely?
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10-28-2017, 10:22 PM	#32
spxxx Boost 1354 Rep 3,691 Posts Drives: 135i M-Sport Join Date: Feb 2014 Location: Valley of Silicon, CA - United States iTrader: (9)	Great option, with the steel insert. Very cheap and good quality https://rover.ebay.com/rover/0/0/0?m...2F172487864143 __________________ F80 M3 TrackBoi, Z4MC GarageBoi, 1M Clone StreetBoi
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10-29-2017, 07:07 AM	#36
Traf First Lieutenant 95 Rep 339 Posts Drives: E82 135i Join Date: Jun 2015 Location: Paris iTrader: (0)	New M cars rear subframe is mounted directly to the body, why not aluminum bushings then ?
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