Quote:
Originally Posted by GoingTooFast
Maybe this is because after March 2007 the 335i got the Dynamic Performance Control diff. (aka E-LSD)which is a mechatronic system where the final drive is combined with two superimposed gearsets and two electronically controlled multiple-plate brakes (one for each wheel):
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I missed this the first time. Please excuse me, I'm a little OCD. I don't mean to be a butt head about this.:wink:
No where on BMW's site can I find this in
any 335. Not even the x-drive. Nor an any other vehicle. It is not out yet. Googling for more information netted me this article dated April 07:
BMW has just taken the wraps off an advanced torque vectoring system that promises to improve both the agility and stability of its four-wheel drive models.
Called Dynamic Performance Control, the new system is an evolution of BMW’s xDrive system, but adds a series of additional electro-magnetic clutches, in a modified rear differential housing that allow power to be juggled between the individual rear wheels as well as between the front and rear axles.
Dynamic Performance Control works in conjunction with sensors in the anti-lock braking system that measure steering angle, yaw rates, road speed and torque developed by the engine. Essentially, it directs drive to where it can be used most effectively in an operation not dissimilar to that of a traditional locking differential on a rear-wheel-drive car.
If the car understeers, xDrive will redirect more drive to the rear wheels and, if required, the Dynamic Performance Control system will then load up the outside rear wheel with the balance of power, providing an additional turning moment beyond that generated by the steering wheels. During oversteer, it reverses the action, sending the majority of drive through the front wheels and, if necessary, increasing torque to the inside rear wheel to stabilise the car during cornering. Both processes are explained in BMW's images, which you'll find in our gallery.
Unlike similar systems developed by rival car makers, BMW’s Dynamic Performance Control operates both under load and on the overrun, meaning the car continues to be stabilised even when the driver steps off the throttle mid-corner. The new system adds 12kg to the weight of the car, but it is concentrated low down in the chassis so as not to affect handling to any great degree.
Coming to a BMW near you
BMW is tight-lipped on when Dynamic Performance Control, developed in partnership with German engineering specialist ZF, will be introduced. It will probably appear first on the X6 crossover coupe, before heading into other models, including the X3, X5 and four-wheel-drive versions of the 3-, 5- and next-generation 7-series. Also earmarked to accept the new system is BMW’s seven-seat MPV, and a secret new junior four-wheel-drive that’s tipped to slot into the German car maker’s line-up beneath the X3.
They go on to talk about how it feels
http://www.autocarmagazine.co.uk/New...llCars/225098/
With so many different lables of traction control systems, it is easy to mix them all up. All I found on the 335 is the "Dynamic Stability Control", and the "Dynamic Traction Control" brake management system. I guess I would have to go over to other forums to find out what owners think of it. However, the new diff by BMW is not in the 335s and is not going to be in the 135i any time soon. This is an enhanced x-drive component to compete with Quattro, 4 matic and the like. It does sound like a good deal in the 335xi though. When that will happen has not been announced.