I need to replace the front wheel on my E-bike (2016 Batavus Razer, original wheel is 622 x 15C Rodi in 6063 alloy, 36 spokes, 'V' shaped rim profile) I believe Rodi supplied Batavus with wheels for several years, but unfortunately I don't live anywhere near Netherlands, and can't find a suitable wheel with 36 spokes and a Rim width anything less than 622x19.
Brakes are Magura HS-11 Hydraulic, adjustable so should be possible to fit a wider wheel rim. The tyres are 40-622 / 700 x 38C Schwalbe Marathon Plus. (Editor: these are hydraulic rim brakes.)
My question is - what would I need to be aware of, if I decide to fit a wider rim front wheel?