BMW X-Drive 4X4 System Get the book and DVD here: https://www.createspace.com/4278102 https://www.createspace.com/371201 The BMW all-wheel drive or 4X4 system, called X-Drive, ensures that the vehicle has the best traction all the time, improves agility and keeps you safely on lane. When parking, the system reacts to the need for high manoeuvrability at low speed, by opening the clutch completely so the powertrain functions optimally. Acting virtually instantaneously and in a manner as to go virtually unnoticed by the vehicle's driver. X-Drive can direct up to 100% of drive forces to one axle and allow the driver to start up quickly, even on slippery surfaces or steep hills. X-Drive directs all power to the axles with the greatest wheel traction. X-Drive is the all time, all-wheel drive or 4X4 system from BMW. Under normal circumstances, it distributes driver power between the front and rear axles in a nominal 45-55 ratio, and changes this figure depending on when the road surface or overall driving conditions change. X-Drive allows power to be split between the front and rear axles through use of a multiplate clutch located between the gearbox and the drive shaft. This setup allows X-Drive vehicles to split power in virtually any way it pleases. Torque can be transferred to the front wheels via electronically controlled multi plate clutch that is located in the transfer case. X-Drive does not have a center differential. Most of the time, the clutch is partially locked and power is transferred to both axles in proportion 45-55 front to rear. The power distribution can be altered to continuously variable levels from 50-50 to 0-100. Driving on a winding road in fast style is ..... Get the whole story right now in this video... Enjoy.... Amazon Printed-Books & Kindle: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=mandy+concepcion Google Play Android APPs: https://play.google.com/store/search?q=mandy+concepcion&c=apps Amazon Video DVDs: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dmovies-tv&field-keywords=mandy+concepcion Barnes & Noble Nook: http://www.barnesandnoble.com/s/mandy-concepcion?keyword=mandy+concepcion&store=allproducts Apple iTunes iPad: http://itunes.apple.com/us/artist/mandy-concepcion/id449573393?mt=11