I'm thinking of going with the Rohana RC-10's. I want them in 22 inch staggered fit for my Sedan, but the makers say they will rub. I've seen people with 22's so I don't understand why. It's a concave wheel, so I want the rear wheel to be as concave as possible, but I don't want them to stick out to far. Can you recommend the right offset for:

20x9 front and 20x10 rear
22x9 front and 22x10.5 rear

I know it's a lot to ask, but I just want to be sure.

It won't let me post a pic as an example