Is this tire/wheel size possible??

cookZmonster

I apologize for my first newb post in advance, I have tried to read through some of the posts here concerning tire/wheel sizes, and I THOUGHT I had a good idea of what I could do. I am lucky enough to be able to have (if they will agree!) Asanti custom building my wheels for me, but the specs I asked for basically were rejected by by Asanti as impossible to fit, the tires also... so CLEARLY I must be missing somthing and I need a little help and advice from the knowledgeable folks here to continue.

I am driving a 2010 40th anniversary 370Z, and I have several custom mods (engine, audio etc.) that I am making, so obviously I want wheels also. After some reading I felt that a powerful aggressive look is what I wanted, I am willing to sacrifice a few things to get that but first I need to know IF its possible and streetable (its not going to be tracked/raced), and secondly if it IS possible WHAT will it take (inner fender-well adjustment, etc) to make it safe and solid for daily (aggressive) driving.

Here is what I proposed to Asanti:

Front: 20 x 9.5
Rear: 20 x 10.5

Front: Pirelli PZero Nero 275/30/20
Rear: Pirelli PZero Nero 305/30/20

The owner of Asanti supposedly corresponded to my dealer (Superbuy tires in Bellflower CA) and told him that he was intimate with my car and felt that there is NO way those wheels would work with my setup and that my tires are also too big and won't work. I have read here that folks have done what I have done size-wise, and even more aggressive so what am I missing?

Understand that Asanti basically said "no" to $4400.00 dollars, so I think MAYBE they are on to something to reject my money based on fitment.

I would love to hear any and all opinions from knowledgeable nutZ here

Thanks!
Aubrey
(feel free to chime in that my setup is NOT aggressive enough bullitt.. lol