Otomedik
A concept attributed to BMW and visible in public patent records aims to support drift initiation not only through engine torque, traction control, or brake intervention, but also through suspension movement. The core idea is to momentarily reduce the vertical load carried by the rear tyres, lowering rear-axle grip. In suitable conditions, that could mean less power and lower speed are needed to start the rear of the car sliding.
An important distinction is needed at this stage: a patent does not mean that a feature will definitely be offered in a production car. Patents may never reach production, and they can be changed or abandoned for reasons including cost, durability, safety, regulation, customer expectations, and driving character. It is therefore more accurate to treat this not as “a drift feature already found in BMW vehicles,” but as a technical study showing where electronic and chassis control in performance cars could be heading.
The core patent idea: momentarily reducing rear-axle load
A tyre’s grip does not depend only on its compound or tread pattern. Vertical load on the tyre, the surface, temperature, tyre pressure, suspension geometry, and the driver’s throttle, brake, and steering inputs all contribute to the outcome. When accelerating through a corner, the rear tyres of a rear-wheel-drive car must both propel the vehicle forward and generate lateral force. If the force demanded by the engine exceeds the tyres’ available grip, the rear tyres can begin to slide.
In the approach described by the patent, systems such as adaptive suspension or active roll control could create a very brief, controlled movement at the rear axle. The stated aim in the documents is to temporarily reduce load on that axle. Put simply, the system could momentarily reduce the force with which the rear tyres press into the surface, helping the rear of the car become more willing to slide. This is not a matter of randomly bouncing the vehicle; if developed for use, it would need to be a precise chassis intervention limited by sensor data, vehicle speed, and driver inputs.
Easier drift initiation does not mean safer drifting. Starting a slide and controlling a car at the correct angle, speed, and safety margin are two different skills and two different risks.
How would it differ from today’s drift techniques?
Traditionally, drivers use several methods to initiate a drift. In a rear-wheel-drive car, these can include applying excessive power with the throttle, creating weight transfer at corner entry, briefly locking the rear wheels with a manual handbrake, or using the directional change technique familiar from rallying. In manual-transmission cars, using the clutch to raise engine speed and then deliver torque suddenly through the drivetrain is another technique. Every method requires the driver to maintain continual control over countersteer, throttle modulation, and the car’s weight transfer.
BMW’s patent approach differs because it seeks to change the tyre’s grip condition through the chassis rather than directly increasing power. Modern performance cars can already alter throttle response, differential locking, traction-control thresholds, and, in some models, torque distribution through their drive modes. The new idea is that the suspension could also take an active role in initiating a drift. In theory, this could reduce the need for abrupt throttle inputs to reach the same slip angle.
Such assistance does not, however, remove the laws of physics. Weight transfer, tyre temperature, surface consistency, wheelbase, differential behaviour, and the driver’s vision technique remain decisive. A particularly serious risk is sudden grip recovery, when tyres regain traction abruptly during a slide and can throw the vehicle sharply in the opposite direction. Electronic assistance cannot make an inappropriate entry speed, inadequate runoff space, or incorrect steering response safe.
What data would the system need to monitor?
For a function like this to operate sensibly, it would be expected to use the vehicle’s existing sensor network. Steering angle and steering rate, throttle position, wheel speeds, vehicle speed, yaw rate, lateral acceleration, brake pressure, and the selected driving mode would all need to be assessed. Without those inputs, a suspension intervention would be unpredictable. This is why the patent approach appears to focus on recognising that the driver deliberately wishes to start a slide and on limiting intervention to specific conditions.
In a possible production application, it would make sense for the system to operate only in a dedicated drive programme, with explicit driver confirmation, and within specified speed ranges. Steering angle, an estimate of road-surface grip, the status of safety systems, and the vehicle’s direction of travel could also be used as limits. There are situations in which the system should not permit operation at all: cold tyres, uncertain grip, high speed, areas with sharp kerbs, or environments that place passengers or others at risk are examples.
Why could it be interesting for electric performance cars?
Electric performance vehicles can deliver substantial torque extremely quickly, and software can alter a significant part of the vehicle’s character. On the other hand, the mass and weight distribution introduced by a battery pack can make the feel of initiating and sustaining a slide different from that of a lighter combustion-engined car. A system combining suspension, torque management, differential or motor-based torque distribution, and stability control could give manufacturers a more consistent track-mode calibration.
High torque still does not reduce the need for driver skill; in many cases, it increases it. In an electric vehicle, the speed at which torque arrives can mean that even a small throttle movement has major consequences at the rear tyres. For that reason, more valuable than offering users a “drift score” or a flashy drive mode is clearly explaining system limits, monitoring effects such as overheating and tyre wear, and directing drivers toward safe training environments.
A realistic assessment for drivers and buyers
For anyone considering a performance car, a patent like this should not be a more important purchase criterion than the vehicle’s everyday usability. Suspension comfort, service history, tyre cost, brake condition, drivetrain durability, insurance terms, and resale value have much more direct impact. When reviewing a listing that says “drift mode,” always ask whether it is a factory-installed, verifiable function, which model year it applies to, and under what conditions it operates.
It is equally important for used-car sellers to describe electronic driving features accurately. Not every car that can disable traction control is designed for drifting, and not every model with adaptive dampers has a function of this type. Modified suspension, different tyre sizes, software changes, or worn bushes can cause a vehicle to behave differently from its factory electronic calibration. Incomplete or exaggerated feature descriptions can create the wrong expectation for a buyer.
Quick checklist before a track day
Confirm that the event takes place on a closed circuit with adequate runoff space and clearly defined rules.
Before driving, check tread depth, sidewall damage, correct pressures, and wheel-nut tightness.
Check brake-pedal feel, brake-fluid condition, engine or battery temperatures, and any fluid leaks.
Learn which stability and traction-control setting the car is using; do not fully disable safety systems during your first sessions.
Set up your helmet, seating position, and visibility, and remove loose items from the cabin.
Do not attempt to slide the car on public roads, in car parks, or in confined spaces without the guidance of a professional instructor.
The most common mistake: treating assistance as skill
Drift aids, adjustable traction control, and active chassis systems can make a driver’s task easier, but they do not create track experience, sound reflexes, or sound risk judgement. A driver accustomed to a system’s intervention may not be able to reproduce the same behaviour safely in another car or when that system is switched off. In particular, when tyre and surface grip changes, the vehicle’s response will not be the same as it was on the previous lap.
Another mistake is underestimating mechanical load. Repeated wheelspin and abrupt load changes place stress on tyres, differentials, driveshafts, clutch components in vehicles equipped with a clutch, and suspension parts. For rental-car users, this kind of use may also breach rental terms, create damage liability, or fall outside cover. Rental companies, in turn, should state performance-use terms clearly and support them with vehicle telematics data and tyre and mechanical inspections where appropriate.
Takeaway: an intriguing chassis idea, but the track is the right place
BMW’s patent approach shows how driving aids could move beyond engine and brake control to use the suspension’s dynamic movement as well. If adapted for production, it could aim to make the beginning of a controlled slide more repeatable. Even so, it is essential to remember that a patent is not a production guarantee, electronic support does not change physical limits, and drifting is not appropriate for public roads.
The right approach is to view performance technology not as a showpiece, but as a tool that can support learning in a controlled environment. Know your car, do not neglect tyre and brake preparation, understand what the safety systems are doing, and reserve limit-testing for closed circuits with trained supervision.
