The xDrive technology boosts safety in low-traction conditions in addition to fostering assurance during enthusiastic driving, particularly around corners at faster speeds. The technology seeks to maximize horsepower without losing any power trying to regain traction on the road’s surface.
The xDrive system decreases power to the inner curve wheels when navigating a curve. The driver can exit the turn more quickly thanks to this movement, which also assists the vehicle’s sideways momentum.
Oversteering or understeering could occur when a motorist enters a curve with too much power coming to the drive wheels. Depending on the conditions, the xDrive system switches the power to either the front or the rear axle.
Drive power to the front axle is decreased at the first sign of understeering. More power is sent to the front axle if oversteering is discovered. Vehicle stability returns to normal as a result of this dynamic redistribution of power before the driver even realizes a change has taken place.
In order to keep track of the state of the road, the xDrive system collaborates with Dynamic Stability Control (DSC) and gathers data from the system’s wheel-speed sensors. Additionally, when there is a traction difference between the two sides of the car and wheel spin is about to happen, the system provides brake force.
Together, these features enable xDrive to provide the most enjoyable performance driving experience possible.
In This Article...
Describe xDrive.
All-wheel drive is the designation for xDrive. During typical driving, the standard system distributes 40% of the power to the front wheels and 60% to the rear. In order to increase grip and keep the automobile stable, power can be transferred forward, backward, or to specific wheels when sensors detect wheel slide. As a result, there should be reduced chance of unintended traction loss in corners, during rapid movements, or in low-grip settings, including off-road, making xDrive BMWs better able to maintain the road.
While many other all-wheel drive systems function hydraulically, xDrive employs a multi-disc clutch that is electronically controlled, which is lighter and has a faster rate of power redistribution. BMW’s Dynamic Stability Control (DSC) system of software and sensors can send nearly 100% of the engine’s power to either axle under extreme circumstances in just 0.1 seconds. This procedure is continuously monitored and adjusted by the system. On BMW performance models, xDrive can be configured to distribute power primarily to the rear wheels, shifting it only when there is wheel slip. This ensures that the vehicles can handle the enormous power and torque outputs being supplied today while simulating the traditional rear-wheel drive driving characteristics for which BMWs were known.
Dynamic Performance Control, a characteristic of these more potent BMW models, uses the xDrive system’s electronically controlled clutch plates to accelerate the wheel opposite the one that is spinning. It collaborates with the DSC system, which uses braking pressure to assist the spinning wheel in regaining control.
For Rear-Wheel Drive Vehicles, xDrive
The xDrive versions of BMW’s rear-wheel drive cars (including their sports utility vehicles, the X3 through the X7, but not the most recent X1 and X2 models) distribute 40 percent of available torque to the front wheels and 60 percent to the back wheels during normal driving.
An solitary axle can get almost all of the available torque in an emergency. In order to maintain as much of the classic BMW “rear wheel biased” performance experience, higher performance models equipped with Dynamic Performance Control start with less power going to the front wheels.
The M240i xDrive, for instance, has a transfer case that is physically connected to the excellent 8 speed ZF automatic transmission. The clutch pack, which can send torque to the front or back axles, is part of the transfer case.
The transmission is skewed to the left, and so is the driveshaft for the front wheels. The front wheels are driven by a differential after it travels ahead. Using the area needed for a typical rear-wheel-drive car, a propshaft transfers power to the rear differential.
When does my BMW have xDrive?
You should see the rear transfer box/differential and a drive shaft leading to each of the rear wheels if you peek beneath the back of the XDrive. SDrive solely has front-wheel drive. You should see the rear transfer box/differential and a drive shaft leading to each of the rear wheels if you peek under the rear of the XDrive.
Does BMW xDrive have an off switch?
It is not switchable. This is from the technology manual for BMW. The BMW xDrive all-wheel drive system makes sure your BMW always has the best traction, improving agility and keeping you safely on the road, especially on sharp turns.
Does BMW xDrive require maintenance?
As far as I’m aware, the xDrive system doesn’t need any maintenance. There is no upkeep necessary. The VTG unit, along with ZF8, is full to the brim. No upkeep necessary
Is the BMW xDrive pricey enough?
Cost is an issue with xDrive. Again using a 3 Series as an example, the 320i M Sport starts at PS36,785, but adding xDrive raises the price to PS38,610, representing a PS1825 premium. Furthermore, the xDrive model will cost more to maintain and operate, with a highest fuel economy rating of 41.5 mpg compared to the two-wheel-drive car’s 44.1 mpg. If you travel a lot, this can add up quickly.
When you consider that a 3 Series with winter tires—complete with their unique tread design and incredibly soft compound—will be even more capable on the slick stuff than an xDrive model on ordinary rubber, the cost will be more difficult to bear.
BMW xDrive maintains the agile handling for which BMW is renowned while providing four-wheel drive traction. This is due to the fact that the xDrive system distinguishes cars like the 3 and 5 Series from the quattro system found in the majority of Audi models by having a bias toward rear-wheel drive.
If you frequently travel in snow, it might be wise to get a BMW with xDrive. The car’s four-wheel drive system effectively doubles its degree of traction, helping you to maintain momentum on slick roads where a rear-wheel drive BMW might bog down.
The model will decide. A 520i petrol should be able to drift at low speeds in the wet, whereas an M5 performance saloon with xDrive has enough power to lose traction even on a dry road.
xDrive: A Haldex or not?
The xDrive system, in contrast to its predecessor, employs a clutch-pack differential that engages to transfer torque to the front axle. The technology can transfer 100% of the torque to either axle in the case of the 2018 X3 through X6 models, which by default have a torque split of 40:60. However, because the rear drive shaft is hard-coupled to the transmission output, full torque transfer to the front axle can only be accomplished if the back wheels have zero traction. A high speed electric servo motor turns a cam-shaped actuator disc to apply the wet clutch. The mechanism in most cars relies on the brakes (controlled by the electronic stability control system) to shift torque away from the slipping wheel on each axle. Most cars have open differentials at the front and rear.
On BMW models with transverse engines and front-wheel drive, such as the BMW X1 (F48), BMW 1 Series (F40), and BMW 2 Series Active Tourer, a separate system is employed. Using a Haldex system, these vehicles only transmit torque to the rear wheels when the front wheels are slipping. By default, the front wheels receive 100% of the torque.
What are the advantages of xDrive?
Should BMW xDrive be included in your next BMW? This movie highlights the benefits of BMW’s 4-wheel-drive system, which is an option on almost all BMW vehicles. so that you can make a choice. BMW xDrive offers two noteworthy benefits:
1. On the one hand, you receive improved driving dynamics. For instance, when driving through a curve, BMW xDrive reduces the power on the wheels closest to the curve. This facilitates side motion and hastens your exit from the curve. Every wheel in an xDrive system receives a distinct distribution of torque.
2. On the other hand, driving safety is increased. The BMW xDrive all-wheel drive system is always in operation, but it only intervenes when it senses possible danger. You are supported in this way, for instance, on gravel, sand, damp, or snowy roads.
Is xDrive more fuel-efficient?
Given that BMWs with xDrive have an additional set of driven wheels, servicing will cost slightly more than conventional rear-wheel-drive models due to the need for more frequent servicing and inspections.
A decrease in efficiency is another drawback of all-wheel drive; as xDrive permanently sends power to all four wheels and adds weight, it will inevitably use more fuel than a rear-wheel-drive model. The rated fuel economy for a BMW 320d SE Drive with rear-wheel drive is 61.4 mpg; when fitted with xDrive, the claimed fuel economy drops to 57.6 mpg.
Is BMW xDrive effective in the snow?
It does, indeed. The fundamental idea behind this technology is to provide an all-wheel-drive system, as was already explained. It gives you better traction control underneath your tires by doing this. You can benefit from having extra grip to assist you prevent spinning or skidding in icy weather.
Dynamic Stability Control is a crucial component of the xDrive technology. Once more, this maintains your car’s stability as you drive over snow and ice. If you sense that you are about to lose traction, this is paired with the anti-lock brakes to prevent any spinning and to save you from losing control.
If you drive a BMW equipped with xDrive technology as opposed to one without it, you will undoubtedly notice the difference. To maintain control when driving in winter weather, this technology’s power distribution is crucial.
Of course, there is a small caveat to this. You probably won’t profit if the snow is quite deep because it will be difficult for you to maneuver your automobile through it. Additionally, you still need to take additional safety measures to prepare your BMW for driving in poor snowy weather. Therefore, xDrive functions in the snow, but there are still additional factors to take into account.
Is xDrive always all-wheel-drive?
Dynamic Stability Control (DSC) and continuous sensors enable xDrive to continuously keep an eye on the road and the traction of your car. Under normal driving circumstances, xDrive offers full-time all-wheel drive that is energy-efficiently designed. Your BMW is powered with an energy-efficient split of 40% for the front wheels and 60% for the rear wheels by default.
The electronic multi-plate clutch allows the fully variable system to, if necessary, send all of the power to either axle for a 100:0 split. Your BMW’s engine power distribution to the front and rear axles automatically adapts in less than a tenth of a second thanks to an advanced variable torque split.
Imagine one of your wheels slips while driving on an icy road. You won’t notice the shift as xDrive swiftly and flawlessly directs power to the proper axle to keep you safe. The system will return to its preset split of 40:60 rear-focused driving as soon as it determines that you are secure and are once again operating under safer conditions.
Which is superior, xDrive or Quattro?
Both approaches are really effective and, in all honesty, each has its advantages. Both systems have been used by us quite a bit, and we have always been impressed by how well they function. I’m not sure if one is much superior to the other, but they both have advantages.
My extensive driving of both of them has led me to believe that the BMW xDrive is superior for performance handling on dry tarmac while the Audi Quattro excels in inclement weather. However, both perform admirably in practically any circumstance, demonstrating how far all-wheel drive technology has advanced.