Those tires are very tall, the wheels were probably built for use with 30 and 25 series tires as opposed to 35 and 30.

Since your lowered the lower profile will help you alot more than 10mm of width

 

If changing tires does not help, ^^^This is what I would do next

 

Man maybe it's just me, But I could never justify spending that kind of money on wheels when the company doesn't release offsets. When you know the offsets you can do research to see if they will work. Call other companies especially to see if they would work. I'm sure other companies will release there offsets.

 

As others have asked ... did iForged say the wheels will fit your car or are they used from another car? They will guarantee the fit if you bought them brand new and tell them what car it's going on. However, if you order a custom offset, they will build them to that offset and assume no liability for fit problems.

If you got it new from them, you should be able to return them.