Hey guys I need help from everyone, just purchase a set of Gunmeatl w/chrome lip iForged wheels for my white IS350.
Bolt pattern 5x114.3, 20x8.5 fr 2" lip, 20x10.5 rr. 4.25" lip. 245/35/20 fr, 275/30/20 rr. Barely clear the BBK with 15mm spacer in the front.
Offsets are unknown because iForged doesn't release it. I love these wheels but the problem is it's rubbing in the front and the rear. It rub when there is a little bump on the road or when I make a fast turn. Just by eyeballing it I don't think rolling my fenders would even help because the wheels are too wide or is it? What are my options? Is there a way to make this work. Keep in mind the car is not lowered. Or should I just sell it and take a loss?

Get some different size tires.

yes, downsize your tires...rolling your fenders will always work too.

dont really need to downsize tires..just heat gun the plastic liner and shave the fender in the rear...

I have the same size rim in front and I had 245/35/20 with no drop and I also had heated my wheel well with a heat gun to push back some of the trouble spots. Still rubbed and just didnt feel safe to me. I hate to say it but at least on the front your going to need a smaller tire I went with 225/35/20. IDK about your back wheels seeing as I have 20x8.5 wheels all the way around.

Without a doubt, downsize the tires. I have 20x8.5s all the way around. I just changed my front tires to 245/30s and they rub the top of the fender when going over bumps. I have 255/30s in the rear and don't have any rubbing issues at all. I am also lowered an inch in the rear and .8 of an inch in the front. For the front, I am going to switch to 235/30 which will give me 3 more milimeters in overall height which is all I need because the rubbing is not bad and only when going over 15 mph over bumps.

so you guys are telling me aint no way it'll work with the 275/30/20 in the rear. Keep in mind it is 20x10.5 in the rear. If I go 265/30/20 and roll the fenders will I pull it off? Rolling the fenders is the last resort if I dont have to that'll even be better. And what if I go 235/30/20 in the front?

275/30 in the rear is fine, the 245/35 is your prob up front....you need 245/30 or 235/30. Everyone i know with a 3GS or 2IS runs a 275/30 in the rear

I agree that 275/30 can work in the rear, but the OP says he is rubbing on the fender. This means his offset is the problem. For the front, 235/30 should be fine regardless of the offset.

You're on the money AZ, I believe my offset is wrong. iForged didn't tell me the offsets but was told it should be fine. So now thinking about puttin 265/30/20 in the rear plus roll the fenders. As for the fronts I'll just get 235/30/20, what you guys think?