Kwik8276

Hey everyone, I'm looking to get some wheels now for my is250 awd, I'm really loving the vossens vfs 2 satin bronze, the only thing is that they don't make them on 19's. Now I really love these wheels that I'm thinking of just getting the 20's and hope for the best, but anyone else here rocking 20's and if so what's the biggest tire you can put on them without rubbing ,and if you can give me tire sizes and offset you have will be greatly appreciated ,the quicker the answer I get then the quicker I can get these and post some pics ;-)