m traction control

Herminator said:
Marco said:
I am glad this question was posed as I was about to ask the same thing. I took my Zed out for some "fun and games" in the snow covered car park a few days ago (as a kid does!), and even though I turned the DTC off, it seemed to still kick in and not allow me to have complete fun. It did allow a lot more slip than when it was on, but still not completely off. So it appears to me like you cannot completely disable it? (I have a 2003 model 2.5)
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It's a different system to the M.

You have DSC and DTC. Both only go off when you hold the button for 10 seconds.
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Great! Thanks, first time I heard that....and how lucky am I, the snow is chucking it down outside so I'm waking up earlier tomorrow morning and stopping in a car park on the way to work to put my new found knowledge to the test!

Thanks everyone......bring on the doughnuts! ;-)
 
Herminator said:
It's a different system to the M.

You have DSC and DTC. Both only go off when you hold the button for 10 seconds.
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My old E46 M3 was the same. Either 'on' or press the button for 'off a bit' or hold it for 10 secs for 'off / the car will 180 as soon as you boot it away from a bend'. Only had it totally off once!
 
as we thought then ,off is off, thanks chaps , but do you agree it is hard to unstick the rear, only had it sideways once recently and that was in top gear speak, a mildly moist ! that video is scary cant quite see why he lost that so quick, looks like he may have over reacted a bit when the back end let go , hit the brakes so it just went skidding over the edge, wonder if it would have come back if he stayed off the brakes, any other ideas, hard to judge the speed too, bet that gave you some bad dreams about the new car stuart. :thumbsup:
 
Cant say there's ever a moment where it isnt difficult to get the tyres talking with traction switched all the way off in an ///M. Even half off on sometimes on is easy enough.
 
inkey$ said:
Cant say there's ever a moment where it isnt difficult to get the tyres talking with traction switched all the way off in an ///M. Even half off on sometimes on is easy enough.
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Now I'm confused. Does an M have two stage traction control or just on/off? :?
 
Stuart Truman said:
inkey$ said:
Cant say there's ever a moment where it isnt difficult to get the tyres talking with traction switched all the way off in an ///M. Even half off on sometimes on is easy enough.
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Now I'm confused. Does an M have two stage traction control or just on/off? :?
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I thought it worked in the same way. Press once and its half off. Hold for a few seconds and its all the way off right?
Edit: thinking about it I may be getting confused with the standard non M setup. Just shows how much Ive driven my car recently :(
 
Press it and it's off. No half measures as far as I know.
It certainly didn't kick in last Friday when driving home in the snow and I only pressed the button briefly. :driving:

Then again, I drove it with traction control on as usual today, no snow on the road, and it still had a lairy squirm as a roared past someone slowly pulling over. Even when on its less intrusive than my old 3.0 prefacelift.
 
yes comparitively hard to unstick, especially in the dry, shows just how good the m, trick diff is at getting the power down, would love to go to a large wet carpark , maybe a diesel covered lorry park and have a real play to find the parameters, b and q might get a bit grumpy :driving: :evil:
 
mad4slalom said:
as we thought then ,off is off, thanks chaps , but do you agree it is hard to unstick the rear, only had it sideways once recently and that was in top gear speak, a mildly moist ! that video is scary cant quite see why he lost that so quick, looks like he may have over reacted a bit when the back end let go , hit the brakes so it just went skidding over the edge, wonder if it would have come back if he stayed off the brakes, any other ideas, hard to judge the speed too, bet that gave you some bad dreams about the new car stuart. :thumbsup:
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I think he went into the corner a little too hot as it is tighter than the preceeding bend and it probably tightens up as the road falls away down hill. He then got on the power too early and had to back off again. All of this conspired to unsettle the car so when he nailed it for a second time whilst exiting the corner the unloaded inside rear wheel started to spin up (you can hear this). The diff will have transfered all the torque to the outside rear (which likely lost traction too) with consequent over steer. He reacted a little too late by steering into the skid and lifting off. When the car slowed enough to regain traction it snapped back so he ended up going backwards into the trees.

Conceivably, a car without an LSD would have made it around the corner as all of the excess torque would have been spun away through the unloaded inside wheel.

I do think that the rear is much more stable than you might expect when exiting corners under hard acceleration. Especially given how easy it is to smoke the rear tyres in a straight line from a standing start. Mad4slalom, if you really want to unstick the rear end, just nail it in first with the steering on full lock :evil: Et voila, the one-point turn...I think it should be on the driving test :D
 
impressive how the car calls up bmw assist, i dont think he realises it though as he is asking the passenger for tow rope. Is that a subscription based service or does any Z4 do that in the event of the safety system detecting impact and bluetooth is connected to a phone?

I shall rethink my provoking the back out I have done for years on roundabouts early hours of the morning on the way home... haha
 
I always understood that the lsd stopped all the power going to the wneel that lost traction, i remember losing drive out of corners in non lsd cars because the outside wheel was spinning madly,i also remember watching stock car racers with welded up diffs wanting to power them straight on at the end of the straight unless the driver fliicked the back end out into a drift. the m i read has a 25% lock up lsd , i presume that means it just lets 25% of the power go to a spinning wheel , is that the case ? i guess theres a lot to be said for some skid pan fun day with expert tuition, will look into this locally i think. :thumbsup:
 
bmwz4mc , i know we can all floor it in first on full lock, you can do that in an mx5 , you dont need 338 bhp , i was meaning more when you are in a fairly sharp corner at 30 to 40 mph and you give it a fair old squirt, invairiably it just hunkers down and accelertates out of the bend under full control , it just surprised me how good it is at getting the power down, try the same thing with dsc on and the car is totally different as the computer just saps engine revs until all the steering angle and yaw sensors decide that you are heading straight enough to let the engine rev again.still think in this mode it is too nannying , but at least you know you are a lot safer. :thumbsup:
 
I know what you meant, I was joking :wink:
I agree though, with DSC off it takes mores to unstick the back end that you might expect and when it does go it tends to be in a predictable and progressive fashion...at least it does when you're provoking it intentionally :P
 
I tried it this morning.....so much fun!

P.S. You only need to press the button for 5 seconds not 10......utopia is that much quicker! :evil:
 
Marco said:
P.S. You only need to press the button for 5 seconds not 10......utopia is that much quicker! :evil:
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In an ///M you only need to press it - no need to hold it down.
 
Its not really hard to unstick the back end,just dont expect to do it if your using the lower part of the rev band when driving..4000 rpm's + and the rear can be podged out if you provoke..
Plenty of RPM's left to control the slide and come out the other side a winner! :thumbsup:
 
mmm-five said:
Marco said:
P.S. You only need to press the button for 5 seconds not 10......utopia is that much quicker! :evil:
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In an ///M you only need to press it - no need to hold it down.
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Even shorter route to the fun house - I need to get me one of those! :D
 
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