Nicely done - but I wouldn't trust that car rim to safely hold a bike tyre as the bead profiles are quite different.
There's a thing in the States (of course!) called 'darksiding', which advocates the opposite i.e. fitting car tyres to bike rims, usually on Goldwings (of course!). This diagram is from one of those forums showing how tyres designed for cars will not seat properly on bike rims and vice versa.
