Driving system within the wheel
Second-generation thin type miniaturized motor installed directly in the wheel.
Specifically developed for the BMW i3, the Bridgestone Ecopia EP500 is the first tire to feature ologic technology: a tire with a large diameter and narrow tread pattern.
The tyre provides high grip on both wet and dry road surfaces. It combines large diameter with a narrow tread and high inflation pressure to minimize tyre deformation around the contact patch to reduce rolling resistance. The narrow tread reduces air resistance. Grip performance on wet roads is also improved due to the combination of an exclusive newly developed tread pattern and an exclusive new tyre compound.
Ultramid® Structure from BASF
The Ultramid® Structure from BASF’s polyamide line is long-fiber reinforced.
"AERO-Y" electric vehicle (EV)
POTENZA RE070 (front: 215/40R17 83Y; rear: 255/40R17 94Y)
Comparison of major suspension characteristics (Source: Honda)
In order to keep the tyre pressure as constant as possible, essential for their correct working, a revolutionary rim/rubber complex was designed. At first Dunlop Denloes were selected, developed by Dunlop with the intention of producing a tyre closely derived from competition rubber, which even in the event of stripping would not explode or suddenly deflate, with the well-known dramatic consequences for car control (especially at high speeds). These tyres can also be used over long distances even with a puncture (run flat capability), particularly suitable for competition driving. In the definitive road version they were replaced by similar Bridgestones, 235/45 VR 17 8 in. rims in front and 255/45 (275/45 on request) VR 17 10 in. rims in the rear. The 959 alloy rims, with five spokes and a central locking nut, have a tyre pressure monitoring system incorporated. This is based on the hollow spokes which form a single chamber with the tyre itself. At the hub a sensor reads the pressure in the chamber and transmits it to the on-board computer, which cuts in an alarm below a certain pressure.