maximum dimensions for wheels on a 1996 trans am

[96_TA]

I was wondering what the max wheel width is that will fit on a 1996 trans am (ie. 9.5"...10.5"...etc.)? I am looking at getting a set of Y2K or Z06 wheels for my TA, but some tire shops keep telling me the most I can do is a 9.5" width. It doesn't make sense, especially when I see other people with them. Is it only possible with suspension modifications? What's the most my wheel well can take? Also what offset do I need?

Thanks for your help.

Mike

[383Formula]

I have 17x9.5 for my front rims with a 54mm offset, and my back rims are 18x10.5 with a 58mm offset on my 1995 Formula. I went with black Z06 rims and I am going to end up needing spaces in order for it to fit better without rubbing.

[96_TA]

Ok cool. So does the back rub or the front, or both? and have you changed your suspension in any way?

Mike