I think I have decided on the ZR1 rims. I don't want the 17x8, because as part of the rom change, I would like to be able to get wider tires as well.

I hear some people saying the ZR1 rims are 17x9 and some saying 17x9.5. SLP's website sells 17x8 and 17x9.

What do I need to make the 17x9's work all the way around? Will I be able to get 275's all the way around with no problems and without the wheels sticking out? If not, what do I have to do? I am open to tires that are not as wide on the front of necessary.

Also, what are the downsides and drawbacks to spacers? I have been searching on all of this and can't seem to get clear cut answers.

Thanks in advance.