In this youtube video, a Toyota FJ cruiser in Saudi Arabia drives up on two wheels while 5 people get out and remove the wheels on that side.
This turns out to be somewhat of a thing-to-do in arab nations (they call it hagwalah), and called 'high-skiing' stateside.
So here's where it gets confusing: based on everything I understand about differentials:
- Open differentials (which this FJ comes with in most trims) allow the torque to follow the path of least resistance, which should then just spin up the airborne tires with the engine's power until the vehicle loses speed (coasting)
- Locked differentials (which is a rear-only option on FJs) would spin both right and left wheels at the same speed, the airborne wheel would be forced to spin under engine power (unless in neutral, which would cause the vehicle to lose speed)
- Limited-slip differentials would make the airborne wheel behave like a locker up to a torque value that is higher than the free spinnable wheel in the air could provide
- Torsen differentials, used in some sports cars, use planetary gears to send torque to the harder-to-drive wheel, but require some resistance ('torque multiplying differentials, anything * 0 = 0) to operate so again would just spin the airborne wheel freely
The only thing I can think that would do this would be something like a parking brake on the rear wheels when in 2WD mode, but it would have to be disconnected or rendered inoperable on the side with the wheel on the ground, and I would also expect the (rear) wheel to come to an abrupt stop, which it does not.
How is it possible that this driver is maintaining speed for ~4 minutes while up on two wheels in an FJ cruiser, that is likely unmodified? There are other videos that show drivers doing this and switching sides, but for lesser time so it would be possible that they are coasting while their vehicles are up in the air.
Spend a little time watching more similar videos and you will realize that all these cars are stock. Theyre either rentals or stolen from hard working average citizens.
Source: 16 years living in Saudi Arabia >