I have a g37 ipl coupe and i just recently ordered new rims 20x9.5 and 20x10 and got new tires too 245/35 20 and 285/30 20 on the rears, the rears stick out too much and for the front whenever i turn ill rub against the sides. is there anyways to solve these problems? I'm planning on getting air bags soon but i don't know if that'll help at all. I'm trying to tuck in the rears and the front, but my problem is i don't know how to solve the rubbing in front. My whole car is stock by the way. sorry I'm new to cars

 

I don't know enough about the clearances to say without pics. If you're just inside the wheel well you might be able to roll the fender for clearance. In any case, posting pics might help with others with more experience than I that can help out.

 

Do you have the wheel offsets by chance, and like Flakman said, pics would help a lot.
You may have to resort to heavy camber and the front fender roll, hopefully not a rear fender pull since they're already rolled.
Keep in mind, at stock height you will have poke w/ aggressive offsets, the natural cambering in when you lower will hopefully give you enough tuck.

 

my fronts are at an offset of +0 and my rears are at a 0ffset of +10, Ill get those pictures up as soon as I can

 

Those offsets are way aggressive without any fender work, at the very least heavy camber is in order.