[rustyroger]

Newbie here, I've bought my wife a 2011 s drive E84.
It has run-flat tyres and no spare. This is anathema to an old git like me.
A full size spare and tyre would take up too much load space, but a space saver donut, jack and brace would be ok for us.
When the tyres wear out I intend to replace them with ordinary 225-50 zr 17s, but will they fit the wheels or do I need to replace all the wheels and tyres?

Roger.