Are you RWD? I have 20x9 +30 on my fronts with 245. lowered on eibachs, no rub. But I didn't like the gap/squat look for the RWD setup, so I went with H&R (higher in the rear than eibach but about 1/4 in lower on the front) and I rubbed pretty bad when I was doing canyon runs. I shaved the inside of my fenders and did a slight trim of my fender liner. For the most part, I don't rub any more except on a big undulation in the road. If I had to do it over again, I would've went +35 on the front. Rears are fine.
