here are some pics of my R56 Astro black with rota slipstream 16 x 6.5 et 45 bore 56.1. I got the rims from jessica at 18racing.com. I put some Kumho AST 205/55 16. The ride is much better than the stock 17 inch with summer tires. Turn in is less crisp, most likely due to sidewall flex. I am very happy with the ride comfort/ handling compromise. The rims clear the brakes and rear suspension with plenty of clearance.
Here are the obligatory pics:



here is another with my son in the background

 

I see he's got his boots on, ready for a detailing lesson?

 

Your MINI Looks ready for serious business,not all MINIs are cute!

 

Looks good and ready to be dropped a little...

 

yeah I see coil over or springs in my near future, the wheel gap is huge.

 

Very nice!