XSeries-forum

This weather is the main reason that the E46 M Sport is not allowed to come out to play at present........she has a mean streak. She really likes swapping partners! She prefers her rear wheel pair to become her front pair.

I wanted to take the smart out today but feared I'd look an idiot if I got it stuck

Rear wheel drive and skinny tyres - only problem is you can't turn traction off at all

I followed an old 1960s car flying up snow roads today-I couldn't keep up! Again nice skinny tyres I guess

[quote=""X5Sport""][quote=""storminmike""]

DTC DSC.............errr
I'm sure I only have a DSC button
Is this the way you're meant to use it?
Normal Road Driving (inc light snow): Light is of but whole system is active
Deeep snow and or stuck in snow: Quick dab and light comes on
HOLD Button a long time....light comes on an it BINGS......madness in snow....call an undertaker
PS if the car is so clever why have a button in the first place....isn't that why xdrive was invented....I don't want to choose I just want it to be magnificant [/quote]

Yes that's how it works.

Prior to 'X-drive' 4WD BMWs had a permanent 38%/62% front-rear power split.

X-drive is still a permanent 4WD system but provides a variable power distribution system within the 4-wheel drive transmission system that can very quickly adjust the percentage of power delivered to each pair of wheels - front or rear - between 0% and 100% thanks to a servo controlled wet clutch unit. The DSC uses a combination of the X-drive and ABS to maintain stability within limits by shifting the power balance - but will still allow you to go into the ditch if you're 'outside the envelope'.

The E70 has an updated X-drive (faster and smarter I guess?) and the E71 also the further added function (Dynamic Performance Control) in that it has an active torque distribution system on the rear axle differential only too which can shift the torque to one or other wheel via electronically controlled clutches - or even provide some form of diff lock if needed.[/quote]



Gues I'll leave the button alone then and let xdrive do the driving
officer I was 'outside the envelope

BMW website description of DTC:

http://www.bmw.com/com/en/insights/tech ... ntrol.html

Using it for drifting sounds great fun, but as I'm no rally expert would have to be in an empty car park or similar!

Officer, I think the ditches should have been built a little further from the road, and if they had, your Traffic Car would not now be at the bottom of that one......

[quote=""MJim""]BMW website description of DTC:

http://www.bmw.com/com/en/insights/tech ... ntrol.html

Using it for drifting sounds great fun, but as I'm no rally expert would have to be in an empty car park or similar![/quote]

last years snow in our works car park the DSC of the e53 seem to allow a rear dominance...certainly no snow plough understeer

[quote=""X5Sport""][quote=""535dboy""]Mine doesn't say anything about snow mode?[/quote]

What happens if you just press and release the DSC (skiddy car symbol) button as per my first post? If the word 'Traction' appears in your display window in the instrument binnacle then you have the function available. I don't know exactly when BMW modified the DSC systems to make DTC available as an added function.[/quote]

press that button and the dsc symbol lights up (4x4 with an arrow goin around it in the centre between the speedo and the rmp). didn't get 'Traction' in the display.