You could either buy a brand-new aftermarket set of wheels of the correct size and equip them with the right size tyres. What I would do instead, though, would be to find a suitably-sized used set of ...
Bugatti Veyron-owning friend: a lightly used set of wheels and tires. What's the eBay "Buy it Now" price? Only $100,000. A steal, surely. The seller claims 85 percent of the tires' life remains.