I've used a few different combinations, all on Saab 9-5 Estates. Best fit was by far Fondmetal 9A 18x8" with 225/40-18 tyres. The car was fitted with Eibach springs, approx. 30 mm lower than standard. No problem at all with wear or clearence, even when loaded with people or luggage. Downside is that they no longer make these alloys
Have also used AEZ Bimo 18x8,5" with 225/40-18. They had some of a clearence problem on the front wheels. Especially on uneven roads.
Third setup is BBS Challenge 19x8,5" with 235/35-19. There is for sure a clearence problem on the rear wheels. There's a plastic trim on the rear wheel arches, and they have a hard time
No problems when driving alone or with light luggage/passengers, but not to be used with full load. Car is still running on standard Aero shock absorbers (with Eibach springs). Guess that it will help a little by fitting harder shocks.
Cheers,
Stefan