Attn: If Interested In 100% Rwd

stashtrey · 07-17-2014, 10:19 AM

Quote:

Originally Posted by tboudre

My theory (and a sensible one) is that the computer senses the drive shafts disconnected by slip, they'll move before the back wheels move since the back has a load. The computer then transfers all of the torque to the rear by disengaging the clutch in the transfer case. According to BMW literature, corrections for slippage are done in 1/10th of a second. The rear is connected by drive shaft with no clutch and cannot be disconnected, so some power is always transferred to the rear.

Do you think damage will occur over time? I'm surprised more people aren't discussing this. Hardly anyone has commented on it.

tboudre · 07-17-2014, 10:39 AM

Quote:

Originally Posted by stashtrey

Do you think damage will occur over time? I'm surprised more people aren't discussing this. Hardly anyone has commented on it.

I don't think there would be immediate damage, but if the servo is moving a lot to try to engage the front wheels, it (the infamous 60k mile plastic gear you can read about on the X3/X5 & xDrive forums) may wear faster. On the other hand, the servo may work less with the front wheels disconnected. The only way to find out is to read those signals going to the servo over a period of time.

stashtrey · 07-17-2014, 12:35 PM

Quote:

Originally Posted by tboudre

I don't think there would be immediate damage, but if the servo is moving a lot to try to engage the front wheels, it (the infamous 60k mile plastic gear you can read about on the X3/X5 & xDrive forums) may wear faster. On the other hand, the servo may work less with the front wheels disconnected. The only way to find out is to read those signals going to the servo over a period of time.

Yeah j would think less stress on the front end. Is the rear/main drive shaft identical to the RWD 335?

NEFARIOUS · 07-17-2014, 03:57 PM

Subscribed. Personally, I'd prefer to have it able to be selected like a 4×4 instead of always-on... To be straight up, I bought my E90 because it had the features I wanted (Nav+HID) at the lowest price on the lot, and I didn't really know the subtle yet major differences between the RWD and AWD until I bought this car, especially since I've mostly owned FWD cars.

... But more so for gas mileage's sake (and maybe for some aspects of performance), I'd like to have it on RWD in sunny SoCal, then perhaps AWD when I feel like tearing through the hills, the rare chances we have inclement weather or even when I finally can try snowboarding in the winter.

Quote:

Originally Posted by Lexxxx

i did what another member did on here. remove the front drive shaft. 20 minutes of work. 8 10 mm bolts. no codes or errors. 100%rwd. done deal

Forgive my ignorance, but doesn't that leave the gutwork exposed to the elements? How easy is it to reassemble if one were to want it back (e.g. before encountering inclement weather or trading up)?

Lexxxx · 07-17-2014, 06:41 PM

Quote:

Originally Posted by NEFARIOUS

Subscribed. Personally, I'd prefer to have it able to be selected like a 4×4 instead of always-on... To be straight up, I bought my E90 because it had the features I wanted (Nav+HID) at the lowest price on the lot, and I didn't really know the subtle yet major differences between the RWD and AWD until I bought this car, especially since I've mostly owned FWD cars.

... But more so for gas mileage's sake (and maybe for some aspects of performance), I'd like to have it on RWD in sunny SoCal, then perhaps AWD when I feel like tearing through the hills, the rare chances we have inclement weather or even when I finally can try snowboarding in the winter.

Forgive my ignorance, but doesn't that leave the gutwork exposed to the elements? How easy is it to reassemble if one were to want it back (e.g. before encountering inclement weather or trading up)?

i hit 1000km yesterday and still no issues. and there is a plastic covering that covers the front drive shaft area so it wont be exposed to any elements . it will be just as easy putting it back in. 8 bolts and about 20 minutes. im gonna throw it back on for the winter. As for driving so far its been great. i get full rwd . and i read that if the front drive shaft has no load then the power is transfered to the rear . i spin tires all day and get it sideways if i want. worth a try. if you dont like it just put it back on . theres not really any gutwork to be exposed anyway

Maniac0908 · 07-17-2014, 08:54 PM

Pics of what to remove please.

Lexxxx · 07-18-2014, 12:56 PM

Quote:

Originally Posted by Maniac0908

Pics of what to remove please.

Number 1

tboudre · 07-18-2014, 06:06 PM

Oh, that's a piece of cake. For some reason I thought everyone was talking about the shaft from the differential to the wheel.

JC335xi · 07-18-2014, 07:39 PM

Quote:

Originally Posted by tboudre

Oh, that's a piece of cake. For some reason I thought everyone was talking about the shaft from the differential to the wheel.

Nope. Pulled mine out this afternoon. So far so good.

CarFan · 07-18-2014, 09:01 PM

Quote:

Originally Posted by Lexxxx

Number 1

What lights flash if you have this done? Do all other aspects of the car perform normally?

JC335xi · 07-18-2014, 10:13 PM

Quote:

Originally Posted by CarFan

What lights flash if you have this done? Do all other aspects of the car perform normally?

So far everything functions normally for me.

CarFan · 07-19-2014, 07:58 AM

And this would be the same for a 328 Xi correct?

JTRACKER · 07-21-2014, 02:20 PM

I ran my 330xi without the shaft for a drive to get a new one - on the highway at speed, with no issue.

I did disable the DTC/DCS just in case.

From another thread:

http://www.e90post.com/forums/showth...3#post15979983

stashtrey · 07-22-2014, 03:17 AM

Pulled my front shaft out tonight. Just went for a drive and hot damn....very cool!

Sandman614 · 07-22-2014, 01:33 PM

Quote:

Originally Posted by stashtrey

Pulled my front shaft out tonight. Just went for a drive and hot damn....very cool!

Wait . Was it hot or was it cool?

Saw the thread you started: how difficult was it?

stashtrey · 07-22-2014, 04:03 PM

Quote:

Originally Posted by Sandman614

Wait . Was it hot or was it cool?

Saw the thread you started: how difficult was it?

It is a 3 on a scale of 1-10. Really easy if you know where it is, have a jack and some stands and a set of sockets.

1. Get front end of car in the air on jacks.

2. Crawl under and remove the mid section plastic under body tray.

3. Using 3/8 10mm female torx socket and extension with wobble elbow...remove 3 out of 4 bolts from the rear shaft mount. Then move to the front and remove them all.

** you have to get your front wheels fixed/braked if you don't have an impact....otherwise the wheels will spin along with the shaft. I used ramps and a jack on each side to get some more room under the car. I also used my Milwaukee M18 Fuel Impact (highly recommend!!).

4. Slide a jacks stand under the car to support the shaft as you get to the final bolts.

5. Pull shaft out....replace under body tray for.

6. Go for s drive. Its fun.

07-17-2014, 08:54 PM	#116
Maniac0908 Major 167 Rep 1,415 Posts Drives: Alpine White 07 335xi Sedan Join Date: Feb 2013 Location: Towson, MD iTrader: (2)	Pics of what to remove please.
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07-18-2014, 06:06 PM	#118
tboudre Private 3 Rep 83 Posts Drives: 2011 LeMans Blue 335xi E90 N55 Join Date: Mar 2014 Location: United States iTrader: (0)	Oh, that's a piece of cake. For some reason I thought everyone was talking about the shaft from the differential to the wheel. __________________ 2011 335i xDrive ///M-Sport LeMans Blue Navigation iDrive 15% Tint N55 E90 - BMS Intake, Le Mans Blue Grilles, Le Mans Blue Rear Diffuser, Alpina B3 TCU Flash, Misc Coding, Matte Black Badge, Gloss Black Exhaust Tips, Blue Calipers, VRSF Charge Pipe, Cyba Scoops, JB4, Sport Oil Cooler Valve, FlexFuel Wires, GoFastBits DV+ - Approx E30 fuel mix Painted 7251 Cobalt Blue Metallic - Matches LeMans Blue
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07-19-2014, 07:58 AM	#122
CarFan First Lieutenant 45 Rep 387 Posts Drives: 2013 X5 3.5 Premium Join Date: Mar 2012 Location: United States iTrader: (0) Garage List 2013 X5 Premium 3.5 [0.00] 2020 Chevrolet Subu ... [0.00] 2018 Mercedes E400 ... [0.00] 2017 Nissan Titan SV [0.00] 2008 Porsche Cayman S [10.00]	And this would be the same for a 328 Xi correct?
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07-21-2014, 02:20 PM	#123
JTRACKER New Member 2 Rep 9 Posts Drives: 2006 E90 330XI Join Date: Nov 2011 Location: Burlington, Canada iTrader: (0)	I ran my 330xi without the shaft for a drive to get a new one - on the highway at speed, with no issue. I did disable the DTC/DCS just in case. From another thread: http://www.e90post.com/forums/showth...3#post15979983
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07-22-2014, 03:17 AM	#124
stashtrey Lieutenant Colonel 294 Rep 1,834 Posts Drives: 08 E90 335xi TiAg Join Date: Dec 2012 Location: Sacramento, CA iTrader: (8) Garage List 2008 E90 335xi Sedan [0.00]	Pulled my front shaft out tonight. Just went for a drive and hot damn....very cool!
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