I have 5 standard steel wheels with some old tyres on (they are starting to perish and two have very little tread). They function fine, but there is a bit of rust starting to poke through the cream colour. I reckon they would be fine with a good clean, sanding and paint. They are left over from when I got new wheels and tyres for cheaper than just the tyres. They are not perfect condition, but they function.
I'm just over the broder in Cornwall, around 30mins from Plymouth. If you are interested I can get some photos of them over the next few days.