If the i3s has as such steering wheel/equipments in the pic below
https://ovoko.fi/osat/evm216-2261j011-bmw-i3-ohjauspyora#gallery-1
Does it need a G20 steering wheel as this
https://ovoko.fi/osat/ddr83-32308746689-bmw-3-g20-g21-ohjauspyora#gallery-1
and will all the buttons work?
Maybe you...