Last edited by markinva; at PM.. It's moar. And that's it. Originally Posted by markinva. I would add that the early s xi system is different than today's But all e9xs have the same awd system First Lieutenant. There is no technology difference between an 08 and a Only a name change. All times are GMT The time now is AM. User Name. Mark Forums Read.
Thread Tools. Xi vs XDrive Is there any difference between the two. Appreciate 0 Tweet. Find More Posts by grahamn Find More Posts by rondocap.
Find More Posts by DesiRoc. Find More Posts by gcreese. Find More Posts by mashimarho. Many people drive BMWs for their rear-wheel-drive power that allows you to take control of the vehicle and drive more aggressively. A general note should be made that four-wheel-drive and all-wheel-drive are not the same things. Four-wheel drive powers all four wheels at the same time, whereas the xDrive all-wheel-drive distributes the power wherever it is needed.
All-wheel-drive xDrive provides better handling, traction and safety on the road, compared to a sDrive BMW. The xDrive utilizes all four wheels and balances the input of power according to the conditions on the road.
It compensates when one wheel lags and puts more power if needed, or less, depending on the situation. On the other hand, sDrive, means that the vehicle is powered by a standard two-wheel drive system.
The xDrive system uses intelligent technology and works wonders together with Dynamic Stability Control to monitor the road conditions at the same time. When the aforementioned sensors detect an uneven, slippery or potentially dangerous surface, or a potential loss of traction, the systems urge power toward the wheel that has the most traction with the road, preventing the vehicle from sliding. In hard to handle situations, many drivers have reported the BMW xDrive to be outstanding in helping them regain control and handling.
In addition to the enhanced safety, the xDrive is not an ordinary 4-wheel-drive system. BMW engineers have thoroughly researched and know for certain that vehicles tend to under or oversteer during harsh sharp turns. For that reason, the wheels compensate, resulting in the xDrive being far more efficient in terms of steering.
The xDrive achieves superior driving dynamics and brings the advantage of taking sharp turns easily, without losing control of the vehicle at any moment, regardless of climate. A good example of that optimization is how xDrive SUVs allow smoother turning by misplacing the power from the inside wheels while turning, which allows the vehicle to lie on the outer wheels and be far more balanced. We compared the same BMW X1 model with two different drivetrains.
It weighs 3, lbs. The level of traction is often uneven in these conditions, and the xDrive system monitors the wheel speed to allocate power in milliseconds to the wheels that have the greatest chance of spinning. For example, if a driver is attempting to accelerate while the rear wheels are on ice and the front wheels are on pavement, power will be distributed to the front axle to increase traction.
Sure, powering four wheels instead of two requires more power, butBMW has optimized xDrive to operate at the maximum level of efficiency. The second advantage with xDrive is enhanced driving dynamics.
BMW xDrive has an advantage over other drivetrains while taking sharp turns. The system knows that vehicles have a tendency to under or over steer in the curves, so it will reduce power to the inside wheels to allow for a smoother turn and quicker acceleration out of the turn. Both of these situations pop up often, and drivers can rest easy that xDrive is always optimizing their safety.
There is often confusion when discussing the difference between four-wheel drive and all-wheel drive. Both drivetrains are distributing power to all four wheels to enhance traction but go about it in different ways. With a four-wheel drive system, power is distributed evenly to the front and rear axle. This means that each wheel is operating at the same power level.
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