It's the new BMW eDrive Wheel/Tire Hybrid Technology. To reduce wear on the tire, it pops off for a limited time which allows the wheel to absorb the wear instead. It results in a longer time between replacements of the tires and a 23% increase in consumer satisfaction.
[–] Bolt 0 points 4 points 4 points (+4|-0) ago
It's the new BMW eDrive Wheel/Tire Hybrid Technology. To reduce wear on the tire, it pops off for a limited time which allows the wheel to absorb the wear instead. It results in a longer time between replacements of the tires and a 23% increase in consumer satisfaction.