4WD

The Beast · 02-08-2016, 02:12 PM

Is the F48 permanent 4WD or mainly FWD with the rear kicking in when required?

Les Paul · 02-08-2016, 02:35 PM

Predominantly FWD - rear kicks in as needed. No option to switch manualy to 4WD.

brissim · 02-08-2016, 02:49 PM

Not sure if its actually a Haldex-branded system, but it works the same way as the Haldex AWD system under all Volvo AWDs and many Audi/VW AWDs. Nothing wrong with the system. Before coming to BMW had a number of AWD Volvos and had no complaints as to how the "part-time" AWD system works - its there when you need it. The latest generation Haldex systems (Gen 5?) pre-charge the RWD and are claimed to operate within 1/8 of a revolution of the rear wheel. Well regarded by Volvo drivers particularly in snow and ice conditions.

Tony

The Beast · 02-08-2016, 03:31 PM

Thanks guys not that we are going to use it much.... was just wondering as the part time option seems to be the trend on smaller SUV's

bmtespar · 02-08-2016, 07:30 PM

I was watching an interview with a X1 engineer who said when the car was in sport mode, it would send more power to the rear wheels to perform more like a rear drive vehicle.

ttimbo · 02-08-2016, 09:01 PM

Quote:

Originally Posted by bmtespar

I was watching an interview with a X1 engineer who said when the car was in sport mode, it would send more power to the rear wheels to perform more like a rear drive vehicle.

Do you have a reference for this? I've searched the available technical documents.

bmtespar · 02-08-2016, 09:26 PM

Sorry. Just tried to find it again. It was at a test event where BMW set up a course and spoke with a German engineer. I think it was subtitled.

ttimbo · 02-08-2016, 10:35 PM

Thanks for looking. Everything I've read about the Xdrive system suggests that the Performance Control simply alters the DSC/traction control sensitivity (and it's not very clear on how and how much), not the actual torque split. I think it's pretty much the same as all current Haldex systems, which send drive to the rear as soon as any front-wheel slippage is detected. I had Gen 3 Haldex on my Audi 8P S3, and it was very sure-footed, so I'm keen to experience the latest version.

Shubha29 · 02-08-2016, 11:36 PM

Quote:

Originally Posted by bmtespar

I was watching an interview with a X1 engineer who said when the car was in sport mode, it would send more power to the rear wheels to perform more like a rear drive vehicle.

Where is the link for this video ? can u please share.

ttimbo · 02-09-2016, 02:48 AM

See bmtespar's post above, in response to my request

The Beast · 02-09-2016, 04:16 AM

Quote:

Originally Posted by bmtespar

I was watching an interview with a X1 engineer who said when the car was in sport mode, it would send more power to the rear wheels to perform more like a rear drive vehicle.

Would be great if it did...

Having the capability to select the offset of power would be great if available in the driver control settings. We can already configure sport mode to either use it to implement just gearbox or chassis and steering settings. Adding full $WD as an option would have been nice.

Vogit · 02-09-2016, 05:52 AM

Opposite question: Does EcoPro disable AWD?

The nice little diagram that appears on the screen when you select it appears to just show the FWD drivetrain (In environmentally friendly green!), whereas in Sport both ends are shown in go-faster red...

Dilbert2402 · 03-02-2016, 04:03 AM

Quote:

Originally Posted by The Beast

Is the F48 permanent 4WD or mainly FWD with the rear kicking in when required?

Check out the sticky at the top of the forum about tech training docs, it has an excellent description of how the drive train works.

02-08-2016, 02:12 PM	#1
The Beast Lieutenant Colonel 268 Rep 1,597 Posts Drives: VW Transporter Sportline Join Date: Aug 2010 Location: Wolverhampton iTrader: (0)	4WD Is the F48 permanent 4WD or mainly FWD with the rear kicking in when required? __________________ Current: VW Transporter Sportline, F48 X1 20i M Sport. Previous: F10 530d M Sport, W176 A200 CDI AMG Evolution, E70 X5 3.0 SD M Sport, F20 120d M Sport, E81 120d M Sport, E46 325i M Sport, E46 318ci & Many Others...
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02-08-2016, 02:35 PM	#2
Les Paul Private First Class 38 Rep 103 Posts Drives: X1 2.0D Xline Auto Join Date: Nov 2015 Location: UK iTrader: (0)	Predominantly FWD - rear kicks in as needed. No option to switch manualy to 4WD.
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02-08-2016, 02:49 PM	#3
brissim Lieutenant 86 Rep 510 Posts Drives: X3 30d (2011 F25) - now sold Join Date: Jul 2011 Location: Brisbane, Australia iTrader: (0)	Not sure if its actually a Haldex-branded system, but it works the same way as the Haldex AWD system under all Volvo AWDs and many Audi/VW AWDs. Nothing wrong with the system. Before coming to BMW had a number of AWD Volvos and had no complaints as to how the "part-time" AWD system works - its there when you need it. The latest generation Haldex systems (Gen 5?) pre-charge the RWD and are claimed to operate within 1/8 of a revolution of the rear wheel. Well regarded by Volvo drivers particularly in snow and ice conditions. Tony
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02-08-2016, 03:31 PM	#4
The Beast Lieutenant Colonel 268 Rep 1,597 Posts Drives: VW Transporter Sportline Join Date: Aug 2010 Location: Wolverhampton iTrader: (0)	Thanks guys not that we are going to use it much.... was just wondering as the part time option seems to be the trend on smaller SUV's __________________ Current: VW Transporter Sportline, F48 X1 20i M Sport. Previous: F10 530d M Sport, W176 A200 CDI AMG Evolution, E70 X5 3.0 SD M Sport, F20 120d M Sport, E81 120d M Sport, E46 325i M Sport, E46 318ci & Many Others...
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02-08-2016, 07:30 PM	#5
bmtespar Major 709 Rep 1,066 Posts Drives: 19 X3 30i, 18 230iX Vert Join Date: Sep 2014 Location: Atlanta Ga iTrader: (0)	I was watching an interview with a X1 engineer who said when the car was in sport mode, it would send more power to the rear wheels to perform more like a rear drive vehicle.
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02-08-2016, 09:26 PM	#7
bmtespar Major 709 Rep 1,066 Posts Drives: 19 X3 30i, 18 230iX Vert Join Date: Sep 2014 Location: Atlanta Ga iTrader: (0)	Sorry. Just tried to find it again. It was at a test event where BMW set up a course and spoke with a German engineer. I think it was subtitled.
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02-08-2016, 10:35 PM	#8
ttimbo Major 282 Rep 1,491 Posts Drives: F48 X1 25i AW; F20 M135i AW Join Date: Jan 2013 Location: Australia iTrader: (0)	Thanks for looking. Everything I've read about the Xdrive system suggests that the Performance Control simply alters the DSC/traction control sensitivity (and it's not very clear on how and how much), not the actual torque split. I think it's pretty much the same as all current Haldex systems, which send drive to the rear as soon as any front-wheel slippage is detected. I had Gen 3 Haldex on my Audi 8P S3, and it was very sure-footed, so I'm keen to experience the latest version. __________________ BMW F22 M240i; F48 X1 25i, BMW F20 M135i Peugeot T9 308 GTi 270 Renaultsport Megane 3 Trophy-R, Renault Clio Sport 182.
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02-09-2016, 02:48 AM	#10
ttimbo Major 282 Rep 1,491 Posts Drives: F48 X1 25i AW; F20 M135i AW Join Date: Jan 2013 Location: Australia iTrader: (0)	See bmtespar's post above, in response to my request __________________ BMW F22 M240i; F48 X1 25i, BMW F20 M135i Peugeot T9 308 GTi 270 Renaultsport Megane 3 Trophy-R, Renault Clio Sport 182.
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02-09-2016, 05:52 AM	#12
Vogit Second Lieutenant 93 Rep 251 Posts Drives: X1 xDrive 20D xLine Join Date: Nov 2015 Location: Tyne & Wear iTrader: (0)	Opposite question: Does EcoPro disable AWD? The nice little diagram that appears on the screen when you select it appears to just show the FWD drivetrain (In environmentally friendly green!), whereas in Sport both ends are shown in go-faster red...
	Appreciate 0 Quote