Beijing, China – A two-layer, dual-density polyurethane, puncture-proof bike tyre is being used on ofo shareable bicycles, said BASF which makes the polyurethane.
PU tyres roll out on ofo bikes

Ofo bikes use PU tyres
The tyres use Elastopan with a tough, high-grip, wear-resistant outer layer supported by an inner shock-absorbing layer.
This technology can ‘reduce the need for repairs, extending the service life of our bicycles. [It] will also reduce the number of bicycles that are abandoned due to damage,’ said Dai Wei ofo CEO.
Ofo claims to have around 10m bicycles in 18 cities in 13 countries. The bikes can be booked and located by smartphone app.