What tyre size for these?

[Worcester_spoon]

Looking at these http://www.cmwheels.com/index.php?route=product/product&path=60_91_92_180&product_id=228

Any idea what tyre sizes I'd need?

 

[mmm-five]

Assuming the offsets are standard, and to stay as close to original circumference/diameter (so no issues with rubbing), then:
- 225/35r19 fronts
- 255/30r19 rear

Alternatively, a 235/35r19 and 265/30r19 set-up would increase everything by 1-2% (and increase the risk of rubbing due to the extra width).